From 1ce2d741f6948de9c1ec0fab4e616b007ab3d5bc Mon Sep 17 00:00:00 2001
From: jacktengg <18241664+jacktengg@users.noreply.github.com>
Date: Wed, 22 Mar 2023 18:28:16 +0800
Subject: [PATCH 1/2] [fix](like) fix wrong result of like pattern with
 backslash

---
 be/src/vec/functions/like.cpp                 | 68 ++++++++++++++++++-
 .../test_string_function_like.out             |  5 ++
 .../test_string_function_like.groovy          |  6 ++
 3 files changed, 78 insertions(+), 1 deletion(-)

diff --git a/be/src/vec/functions/like.cpp b/be/src/vec/functions/like.cpp
index 7fe3190ebbc90d..5561c75b758b5f 100644
--- a/be/src/vec/functions/like.cpp
+++ b/be/src/vec/functions/like.cpp
@@ -39,7 +39,7 @@ static const RE2 EQUALS_RE("\\^([^\\.\\^\\{\\[\\(\\|\\)\\]\\}\\+\\*\\?\\$\\\\]*)
 
 // Like patterns
 static const re2::RE2 LIKE_SUBSTRING_RE("(?:%+)(((\\\\%)|(\\\\_)|([^%_]))+)(?:%+)");
-static const re2::RE2 LIKE_ENDS_WITH_RE("(?:%+)(((\\\\%)|(\\\\_)|([^%_]))+)");
+static const re2::RE2 LIKE_ENDS_WITH_RE("(?:%+)([^%_]+)");
 static const re2::RE2 LIKE_STARTS_WITH_RE("(((\\\\%)|(\\\\_)|([^%_]))+)(?:%+)");
 static const re2::RE2 LIKE_EQUALS_RE("(((\\\\%)|(\\\\_)|([^%_]))+)");
 
@@ -534,6 +534,38 @@ void FunctionLike::remove_escape_character(std::string* search_string) {
     }
 }
 
+bool re2_full_match(const std::string& str, const RE2& re, std::vector<std::string>& results) {
+    if (!re.ok()) {
+        return false;
+    }
+
+    std::vector<RE2::Arg> arguments;
+    std::vector<RE2::Arg*> arguments_ptrs;
+    std::size_t args_count = re.NumberOfCapturingGroups();
+    arguments.resize(args_count);
+    arguments_ptrs.resize(args_count);
+    results.resize(args_count);
+    for (std::size_t i = 0; i < args_count; ++i) {
+        arguments[i] = &results[i];
+        arguments_ptrs[i] = &arguments[i];
+    }
+
+    return RE2::FullMatchN(str, re, arguments_ptrs.data(), args_count);
+}
+
+void verbose_log_match(const std::string& str, const std::string& pattern_name, const RE2& re) {
+    std::vector<std::string> results;
+    VLOG_DEBUG << "arg str: " << str << ", size: " << str.size() << ", pattern " << pattern_name
+               << ": " << re.pattern() << ", size: " << re.pattern().size();
+    if (re2_full_match(str, re, results)) {
+        for (int i = 0; i < results.size(); ++i) {
+            VLOG_DEBUG << "match " << i << ": " << results[i] << ", size: " << results[i].size();
+        }
+    } else {
+        VLOG_DEBUG << "no match";
+    }
+}
+
 Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionStateScope scope) {
     if (scope != FunctionContext::THREAD_LOCAL) {
         return Status::OK();
@@ -550,26 +582,55 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         std::string pattern_str = pattern.to_string();
         state->search_state.pattern_str = pattern_str;
         std::string search_string;
+
         if (pattern_str.empty() || RE2::FullMatch(pattern_str, LIKE_EQUALS_RE, &search_string)) {
+            if (VLOG_DEBUG_IS_ON) {
+                verbose_log_match(pattern_str, "LIKE_EQUALS_RE", LIKE_EQUALS_RE);
+                VLOG_DEBUG << "search_string : " << search_string;
+            }
             remove_escape_character(&search_string);
+            if (VLOG_DEBUG_IS_ON) {
+                VLOG_DEBUG << "search_string escape removed: " << search_string;
+            }
             state->search_state.set_search_string(search_string);
             state->function = constant_equals_fn;
             state->predicate_like_function = constant_equals_fn_predicate;
             state->scalar_function = constant_equals_fn_scalar;
         } else if (RE2::FullMatch(pattern_str, LIKE_STARTS_WITH_RE, &search_string)) {
+            if (VLOG_DEBUG_IS_ON) {
+                verbose_log_match(pattern_str, "LIKE_STARTS_WITH_RE", LIKE_STARTS_WITH_RE);
+                VLOG_DEBUG << "search_string : " << search_string;
+            }
             remove_escape_character(&search_string);
+            if (VLOG_DEBUG_IS_ON) {
+                VLOG_DEBUG << "search_string escape removed: " << search_string;
+            }
             state->search_state.set_search_string(search_string);
             state->function = constant_starts_with_fn;
             state->predicate_like_function = constant_starts_with_fn_predicate;
             state->scalar_function = constant_starts_with_fn_scalar;
         } else if (RE2::FullMatch(pattern_str, LIKE_ENDS_WITH_RE, &search_string)) {
+            if (VLOG_DEBUG_IS_ON) {
+                verbose_log_match(pattern_str, "LIKE_ENDS_WITH_RE", LIKE_ENDS_WITH_RE);
+                VLOG_DEBUG << "search_string : " << search_string;
+            }
             remove_escape_character(&search_string);
+            if (VLOG_DEBUG_IS_ON) {
+                VLOG_DEBUG << "search_string escape removed: " << search_string;
+            }
             state->search_state.set_search_string(search_string);
             state->function = constant_ends_with_fn;
             state->predicate_like_function = constant_ends_with_fn_predicate;
             state->scalar_function = constant_ends_with_fn_scalar;
         } else if (RE2::FullMatch(pattern_str, LIKE_SUBSTRING_RE, &search_string)) {
+            if (VLOG_DEBUG_IS_ON) {
+                verbose_log_match(pattern_str, "LIKE_SUBSTRING_RE", LIKE_SUBSTRING_RE);
+                VLOG_DEBUG << "search_string : " << search_string;
+            }
             remove_escape_character(&search_string);
+            if (VLOG_DEBUG_IS_ON) {
+                VLOG_DEBUG << "search_string escape removed: " << search_string;
+            }
             state->search_state.set_search_string(search_string);
             state->function = constant_substring_fn;
             state->predicate_like_function = constant_substring_fn_predicate;
@@ -577,6 +638,11 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         } else {
             std::string re_pattern;
             convert_like_pattern(&state->search_state, pattern_str, &re_pattern);
+            if (VLOG_DEBUG_IS_ON) {
+                VLOG_DEBUG << "hyperscan, pattern str: " << pattern_str
+                           << ", size: " << pattern_str.size() << ", re pattern: " << re_pattern
+                           << ", size: " << re_pattern.size();
+            }
 
             hs_database_t* database = nullptr;
             hs_scratch_t* scratch = nullptr;
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out b/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
index eec1827d95fdf6..0d4628ba6f7bdf 100644
--- a/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
+++ b/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
@@ -122,3 +122,8 @@ bb
 
 -- !sql --
 
+-- !sql_like_backslash1 --
+xyz\\\\,xyz
+
+-- !sql_like_backslash2 --
+xyz\\\\,xyz
\ No newline at end of file
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy b/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
index 48941ed485fdf1..6cfdad4bbf1576 100644
--- a/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
@@ -63,5 +63,11 @@ suite("test_string_function_like") {
     qt_sql "SELECT k FROM ${tbName} WHERE k LIKE \"%\" ORDER BY k;"
     qt_sql "SELECT k FROM ${tbName} WHERE k NOT LIKE \"%\" ORDER BY k;"
 
+    sql """
+        INSERT INTO ${tbName} VALUES ("xyz\\\\\\\\,xyz");
+        """
+    qt_sql_like_backslash1 """ SELECT k FROM ${tbName} WHERE k LIKE "%\\\\%"; """
+    qt_sql_like_backslash2 """ SELECT k FROM ${tbName} WHERE k LIKE "%\\\\\\\\%"; """
+
     // sql "DROP TABLE ${tbName};"
 }

From 1c07011790963b74f558d0fe292a5a526f3ea4f3 Mon Sep 17 00:00:00 2001
From: jacktengg <18241664+jacktengg@users.noreply.github.com>
Date: Thu, 23 Mar 2023 17:05:03 +0800
Subject: [PATCH 2/2] fix and add test cases

---
 be/src/vec/functions/like.cpp                 | 37 ++++++++------
 .../sql_functions/string_functions/like.csv   | 21 ++++++++
 .../string_functions/sql/like_backslash_1.out |  7 +++
 .../string_functions/sql/like_backslash_2.out |  7 +++
 .../string_functions/sql/like_backslash_3.out | 12 +++++
 .../string_functions/sql/like_backslash_4.out | 12 +++++
 .../string_functions/sql/like_backslash_5.out |  4 ++
 .../string_functions/sql/like_backslash_6.out |  4 ++
 .../string_functions/sql/like_backslash_7.out |  6 +++
 .../string_functions/sql/like_backslash_8.out |  6 +++
 .../string_functions/sql/like_backslash_9.out |  3 ++
 .../sql/like_backslash_begin_1.out            |  3 ++
 .../sql/like_backslash_begin_2.out            |  3 ++
 .../sql/like_backslash_begin_3.out            |  7 +++
 .../sql/like_backslash_begin_4.out            |  7 +++
 .../sql/like_backslash_begin_8.out            |  4 ++
 .../sql/like_backslash_end_2.out              |  7 +++
 .../sql/like_backslash_end_4.out              |  7 +++
 .../sql/like_backslash_end_8.out              |  4 ++
 .../sql/like_regex_wild_1.out                 |  4 ++
 .../sql/like_regex_wild_2.out                 |  4 ++
 .../sql/like_wild_many_begin_1.out            |  7 +++
 .../sql/like_wild_many_begin_2.out            |  6 +++
 .../sql/like_wild_many_begin_3.out            |  4 ++
 .../sql/like_wild_one_begin_1.out             |  6 +++
 .../sql/like_wild_one_begin_end_1.out         |  5 ++
 .../sql/like_wild_one_begin_middle_end_1.out  |  4 ++
 .../sql/like_wild_one_end_1.out               |  6 +++
 .../test_string_function_like.out             |  6 ---
 .../string_functions/load.groovy              | 49 +++++++++++++++++++
 .../string_functions/sql/like_backslash_1.sql |  1 +
 .../string_functions/sql/like_backslash_2.sql |  1 +
 .../string_functions/sql/like_backslash_3.sql |  1 +
 .../string_functions/sql/like_backslash_4.sql |  1 +
 .../string_functions/sql/like_backslash_5.sql |  1 +
 .../string_functions/sql/like_backslash_6.sql |  1 +
 .../string_functions/sql/like_backslash_7.sql |  1 +
 .../string_functions/sql/like_backslash_8.sql |  1 +
 .../string_functions/sql/like_backslash_9.sql |  1 +
 .../sql/like_backslash_begin_1.sql            |  1 +
 .../sql/like_backslash_begin_2.sql            |  1 +
 .../sql/like_backslash_begin_3.sql            |  1 +
 .../sql/like_backslash_begin_4.sql            |  1 +
 .../sql/like_backslash_begin_8.sql            |  1 +
 .../sql/like_backslash_end_2.sql              |  1 +
 .../sql/like_backslash_end_4.sql              |  1 +
 .../sql/like_backslash_end_8.sql              |  1 +
 .../sql/like_regex_wild_1.sql                 |  1 +
 .../sql/like_regex_wild_2.sql                 |  1 +
 .../sql/like_wild_many_begin_1.sql            |  1 +
 .../sql/like_wild_many_begin_2.sql            |  1 +
 .../sql/like_wild_many_begin_3.sql            |  1 +
 .../sql/like_wild_one_begin_1.sql             |  1 +
 .../sql/like_wild_one_begin_end_1.sql         |  1 +
 .../sql/like_wild_one_begin_middle_end_1.sql  |  1 +
 .../sql/like_wild_one_end_1.sql               |  1 +
 .../test_string_function_like.groovy          |  6 ---
 57 files changed, 268 insertions(+), 26 deletions(-)
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/like.csv
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_2.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_3.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_4.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_5.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_6.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_7.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_8.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_9.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.out
 create mode 100644 regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.out
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_2.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_3.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_4.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_5.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_6.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_7.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_8.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_9.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.sql
 create mode 100644 regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.sql

diff --git a/be/src/vec/functions/like.cpp b/be/src/vec/functions/like.cpp
index 5561c75b758b5f..e599b563ba087e 100644
--- a/be/src/vec/functions/like.cpp
+++ b/be/src/vec/functions/like.cpp
@@ -38,10 +38,10 @@ static const RE2 STARTS_WITH_RE("\\^([^\\.\\^\\{\\[\\(\\|\\)\\]\\}\\+\\*\\?\\$\\
 static const RE2 EQUALS_RE("\\^([^\\.\\^\\{\\[\\(\\|\\)\\]\\}\\+\\*\\?\\$\\\\]*)\\$");
 
 // Like patterns
-static const re2::RE2 LIKE_SUBSTRING_RE("(?:%+)(((\\\\%)|(\\\\_)|([^%_]))+)(?:%+)");
-static const re2::RE2 LIKE_ENDS_WITH_RE("(?:%+)([^%_]+)");
-static const re2::RE2 LIKE_STARTS_WITH_RE("(((\\\\%)|(\\\\_)|([^%_]))+)(?:%+)");
-static const re2::RE2 LIKE_EQUALS_RE("(((\\\\%)|(\\\\_)|([^%_]))+)");
+static const re2::RE2 LIKE_SUBSTRING_RE("(?:%+)(((\\\\_)|([^%_\\\\]))+)(?:%+)");
+static const re2::RE2 LIKE_ENDS_WITH_RE("(?:%+)(((\\\\_)|([^%_]))+)");
+static const re2::RE2 LIKE_STARTS_WITH_RE("(((\\\\%)|(\\\\_)|([^%_\\\\]))+)(?:%+)");
+static const re2::RE2 LIKE_EQUALS_RE("(((\\\\_)|([^%_]))+)");
 
 Status LikeSearchState::clone(LikeSearchState& cloned) {
     cloned.escape_char = escape_char;
@@ -513,7 +513,7 @@ void FunctionLike::convert_like_pattern(LikeSearchState* state, const std::strin
     }
 
     // add $ to pattern tail to match line tail
-    if (pattern.size() > 0 && pattern[pattern.size() - 1] != '%') {
+    if (pattern.size() > 0 && re_pattern->back() != '*') {
         re_pattern->append("$");
     }
 }
@@ -524,7 +524,8 @@ void FunctionLike::remove_escape_character(std::string* search_string) {
     int len = tmp_search_string.length();
     for (int i = 0; i < len;) {
         if (tmp_search_string[i] == '\\' && i + 1 < len &&
-            (tmp_search_string[i + 1] == '%' || tmp_search_string[i + 1] == '_')) {
+            (tmp_search_string[i + 1] == '%' || tmp_search_string[i + 1] == '_' ||
+             tmp_search_string[i + 1] == '\\')) {
             search_string->append(1, tmp_search_string[i + 1]);
             i += 2;
         } else {
@@ -586,11 +587,13 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         if (pattern_str.empty() || RE2::FullMatch(pattern_str, LIKE_EQUALS_RE, &search_string)) {
             if (VLOG_DEBUG_IS_ON) {
                 verbose_log_match(pattern_str, "LIKE_EQUALS_RE", LIKE_EQUALS_RE);
-                VLOG_DEBUG << "search_string : " << search_string;
+                VLOG_DEBUG << "search_string : " << search_string
+                           << ", size: " << search_string.size();
             }
             remove_escape_character(&search_string);
             if (VLOG_DEBUG_IS_ON) {
-                VLOG_DEBUG << "search_string escape removed: " << search_string;
+                VLOG_DEBUG << "search_string escape removed: " << search_string
+                           << ", size: " << search_string.size();
             }
             state->search_state.set_search_string(search_string);
             state->function = constant_equals_fn;
@@ -599,11 +602,13 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         } else if (RE2::FullMatch(pattern_str, LIKE_STARTS_WITH_RE, &search_string)) {
             if (VLOG_DEBUG_IS_ON) {
                 verbose_log_match(pattern_str, "LIKE_STARTS_WITH_RE", LIKE_STARTS_WITH_RE);
-                VLOG_DEBUG << "search_string : " << search_string;
+                VLOG_DEBUG << "search_string : " << search_string
+                           << ", size: " << search_string.size();
             }
             remove_escape_character(&search_string);
             if (VLOG_DEBUG_IS_ON) {
-                VLOG_DEBUG << "search_string escape removed: " << search_string;
+                VLOG_DEBUG << "search_string escape removed: " << search_string
+                           << ", size: " << search_string.size();
             }
             state->search_state.set_search_string(search_string);
             state->function = constant_starts_with_fn;
@@ -612,11 +617,13 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         } else if (RE2::FullMatch(pattern_str, LIKE_ENDS_WITH_RE, &search_string)) {
             if (VLOG_DEBUG_IS_ON) {
                 verbose_log_match(pattern_str, "LIKE_ENDS_WITH_RE", LIKE_ENDS_WITH_RE);
-                VLOG_DEBUG << "search_string : " << search_string;
+                VLOG_DEBUG << "search_string : " << search_string
+                           << ", size: " << search_string.size();
             }
             remove_escape_character(&search_string);
             if (VLOG_DEBUG_IS_ON) {
-                VLOG_DEBUG << "search_string escape removed: " << search_string;
+                VLOG_DEBUG << "search_string escape removed: " << search_string
+                           << ", size: " << search_string.size();
             }
             state->search_state.set_search_string(search_string);
             state->function = constant_ends_with_fn;
@@ -625,11 +632,13 @@ Status FunctionLike::open(FunctionContext* context, FunctionContext::FunctionSta
         } else if (RE2::FullMatch(pattern_str, LIKE_SUBSTRING_RE, &search_string)) {
             if (VLOG_DEBUG_IS_ON) {
                 verbose_log_match(pattern_str, "LIKE_SUBSTRING_RE", LIKE_SUBSTRING_RE);
-                VLOG_DEBUG << "search_string : " << search_string;
+                VLOG_DEBUG << "search_string : " << search_string
+                           << ", size: " << search_string.size();
             }
             remove_escape_character(&search_string);
             if (VLOG_DEBUG_IS_ON) {
-                VLOG_DEBUG << "search_string escape removed: " << search_string;
+                VLOG_DEBUG << "search_string escape removed: " << search_string
+                           << ", size: " << search_string.size();
             }
             state->search_state.set_search_string(search_string);
             state->function = constant_substring_fn;
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/like.csv b/regression-test/data/query_p0/sql_functions/string_functions/like.csv
new file mode 100644
index 00000000000000..e8edae4efa7825
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/like.csv
@@ -0,0 +1,21 @@
+%test
+te%st
+test%
+%test%
+%te%s%
+%tes\%
+\test
+\\test
+test\test
+test\
+test\\
+\test\
+\tes\t\
+test\\test
+_test
+te_st
+test_
+_test_
+_te_st_
+tes*t
+tes?t
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_1.out
new file mode 100644
index 00000000000000..674b4409dab721
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_1.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_1 --
+%te%s%
+%tes\\%
+%test%
+test%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_2.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_2.out
new file mode 100644
index 00000000000000..e325ca06115e4e
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_2.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_2 --
+%te%s%
+%tes\\%
+%test%
+test%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_3.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_3.out
new file mode 100644
index 00000000000000..b914b143b2ee21
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_3.out
@@ -0,0 +1,12 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_3 --
+%tes\\%
+\\\\test
+\\tes\\t\\
+\\test
+\\test\\
+test\\
+test\\\\
+test\\\\test
+test\\test
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_4.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_4.out
new file mode 100644
index 00000000000000..7f47dc88d8987f
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_4.out
@@ -0,0 +1,12 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_4 --
+%tes\\%
+\\\\test
+\\tes\\t\\
+\\test
+\\test\\
+test\\
+test\\\\
+test\\\\test
+test\\test
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_5.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_5.out
new file mode 100644
index 00000000000000..5175a1b159a931
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_5.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_5 --
+%tes\\%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_6.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_6.out
new file mode 100644
index 00000000000000..91cebaaca783dd
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_6.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_6 --
+%tes\\%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_7.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_7.out
new file mode 100644
index 00000000000000..e9668ee354a42e
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_7.out
@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_7 --
+\\\\test
+test\\\\
+test\\\\test
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_8.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_8.out
new file mode 100644
index 00000000000000..faa932d0846261
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_8.out
@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_8 --
+\\\\test
+test\\\\
+test\\\\test
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_9.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_9.out
new file mode 100644
index 00000000000000..140d06c4fd1335
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_9.out
@@ -0,0 +1,3 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_9 --
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.out
new file mode 100644
index 00000000000000..6d783a419519ff
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.out
@@ -0,0 +1,3 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_begin_1 --
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.out
new file mode 100644
index 00000000000000..f8d9ab36f77422
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.out
@@ -0,0 +1,3 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_begin_2 --
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.out
new file mode 100644
index 00000000000000..634a202a499903
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_begin_3 --
+\\\\test
+\\tes\\t\\
+\\test
+\\test\\
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.out
new file mode 100644
index 00000000000000..5be16e649e9a98
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_begin_4 --
+\\\\test
+\\tes\\t\\
+\\test
+\\test\\
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.out
new file mode 100644
index 00000000000000..639ee1d7073659
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_begin_8 --
+\\\\test
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.out
new file mode 100644
index 00000000000000..0f866a3c9832cd
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_end_2 --
+\\tes\\t\\
+\\test\\
+test\\
+test\\\\
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.out
new file mode 100644
index 00000000000000..bd5991f0812328
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_end_4 --
+\\tes\\t\\
+\\test\\
+test\\
+test\\\\
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.out
new file mode 100644
index 00000000000000..556c9276c4cf8a
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_backslash_end_8 --
+test\\\\
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.out
new file mode 100644
index 00000000000000..706910e9ace72b
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_regex_wild_1 --
+tes?t
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.out
new file mode 100644
index 00000000000000..8edf970afdd83e
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_regex_wild_2 --
+tes*t
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.out
new file mode 100644
index 00000000000000..24c78e758070be
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.out
@@ -0,0 +1,7 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_many_begin_1 --
+%te%s%
+%tes\\%
+%test
+%test%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.out
new file mode 100644
index 00000000000000..2e76849548cc04
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.out
@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_many_begin_2 --
+%te%s%
+%tes\\%
+%test%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.out
new file mode 100644
index 00000000000000..30da8a4469a12f
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_many_begin_3 --
+%te%s%
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.out
new file mode 100644
index 00000000000000..5c0aa3881479e7
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.out
@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_one_begin_1 --
+_te_st_
+_test
+_test_
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.out
new file mode 100644
index 00000000000000..c76c285cc83623
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.out
@@ -0,0 +1,5 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_one_begin_end_1 --
+_te_st_
+_test_
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.out
new file mode 100644
index 00000000000000..fbdb034ba9482d
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.out
@@ -0,0 +1,4 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_one_begin_middle_end_1 --
+_te_st_
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.out b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.out
new file mode 100644
index 00000000000000..09266d7a1727d7
--- /dev/null
+++ b/regression-test/data/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.out
@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !like_wild_one_end_1 --
+_te_st_
+_test_
+test_
+
diff --git a/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out b/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
index 0d4628ba6f7bdf..07c1aa78442052 100644
--- a/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
+++ b/regression-test/data/query_p0/sql_functions/string_functions/test_string_function_like.out
@@ -121,9 +121,3 @@ bab
 bb
 
 -- !sql --
-
--- !sql_like_backslash1 --
-xyz\\\\,xyz
-
--- !sql_like_backslash2 --
-xyz\\\\,xyz
\ No newline at end of file
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/load.groovy b/regression-test/suites/query_p0/sql_functions/string_functions/load.groovy
index 0086ed87a5fcb3..06f5634ac08602 100644
--- a/regression-test/suites/query_p0/sql_functions/string_functions/load.groovy
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/load.groovy
@@ -59,4 +59,53 @@ suite("load") {
             }
         }
     }
+
+    // for like test
+    def tbName = "test_string_function_like2"
+    sql "DROP TABLE IF EXISTS ${tbName}"
+    sql """
+            CREATE TABLE IF NOT EXISTS ${tbName} (
+                k varchar(32)
+            )
+            DISTRIBUTED BY HASH(k) BUCKETS 5 properties("replication_num" = "1");
+        """
+    sql """
+        INSERT INTO ${tbName} VALUES 
+            (""),
+            (" "),
+            ("a"),
+            ("b"),
+            ("bb"),
+            ("bab"),
+            ("ba"),
+            ("ab"),
+            ("accb");
+        """
+    streamLoad {
+        // you can skip declare db, because a default db already specify in ${DORIS_HOME}/conf/regression-conf.groovy
+        // db 'regression_test'
+        table "${tbName}"
+
+        // default column_separator is specify in doris fe config, usually is '\t'.
+        // this line change to ','
+        set 'column_separator', '|'
+        // relate to ${DORIS_HOME}/regression-test/data/demo/streamload_input.csv.
+        // also, you can stream load a http stream, e.g. http://xxx/some.csv
+        file """like.csv"""
+
+        time 10000 // limit inflight 10s
+
+        // if declared a check callback, the default check condition will ignore.
+        // So you must check all condition
+        check { result, exception, startTime, endTime ->
+            if (exception != null) {
+                throw exception
+            }
+            log.info("Stream load result: ${result}".toString())
+            def json = parseJson(result)
+            assertEquals('success', json.Status.toLowerCase())
+            assertEquals(json.NumberTotalRows, json.NumberLoadedRows)
+            assertTrue(json.NumberLoadedRows > 0 && json.LoadBytes > 0)
+        }
+    }
 }
\ No newline at end of file
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_1.sql
new file mode 100644
index 00000000000000..50ec5ac31b3bf4
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_2.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_2.sql
new file mode 100644
index 00000000000000..b93ff443c789c8
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_2.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_3.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_3.sql
new file mode 100644
index 00000000000000..c2e642ded83f38
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_3.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_4.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_4.sql
new file mode 100644
index 00000000000000..1463b1bf640de2
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_4.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_5.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_5.sql
new file mode 100644
index 00000000000000..c68efa178a0bf6
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_5.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_6.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_6.sql
new file mode 100644
index 00000000000000..7b89020cf3759e
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_6.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_7.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_7.sql
new file mode 100644
index 00000000000000..bb265e59a2c021
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_7.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_8.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_8.sql
new file mode 100644
index 00000000000000..c202a9dfb023c8
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_8.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_9.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_9.sql
new file mode 100644
index 00000000000000..0754bb8b1383e3
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_9.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.sql
new file mode 100644
index 00000000000000..9ef466c1cecae2
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.sql
new file mode 100644
index 00000000000000..d4137c446f3e1b
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_2.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.sql
new file mode 100644
index 00000000000000..4637af046b094f
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_3.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.sql
new file mode 100644
index 00000000000000..0138071280a108
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_4.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.sql
new file mode 100644
index 00000000000000..47af27fac58db1
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_begin_8.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\\\\\\\\%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.sql
new file mode 100644
index 00000000000000..aa132cb62beee8
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_2.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.sql
new file mode 100644
index 00000000000000..22b2a648e30609
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_4.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.sql
new file mode 100644
index 00000000000000..cac0dc0afc5235
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_backslash_end_8.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\\\\\\\\" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.sql
new file mode 100644
index 00000000000000..0e610bc2d51668
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%?%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.sql
new file mode 100644
index 00000000000000..bba82b25bdf484
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_regex_wild_2.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%*%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.sql
new file mode 100644
index 00000000000000..37466001d318df
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\%%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.sql
new file mode 100644
index 00000000000000..6ea104fd7c4813
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_2.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\%%\%%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.sql
new file mode 100644
index 00000000000000..3647e828c200ee
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_many_begin_3.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\%%\%_%%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.sql
new file mode 100644
index 00000000000000..59da489ca6c0c0
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\_%" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.sql
new file mode 100644
index 00000000000000..7b0d3bd6c6fad5
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_end_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\_%\_" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.sql
new file mode 100644
index 00000000000000..81f91447e850be
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_begin_middle_end_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "\_%\_%\_" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.sql b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.sql
new file mode 100644
index 00000000000000..d31dd79d18bc35
--- /dev/null
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/sql/like_wild_one_end_1.sql
@@ -0,0 +1 @@
+SELECT k FROM test_string_function_like2 WHERE k LIKE "%\_" order by k;
diff --git a/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy b/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
index 6cfdad4bbf1576..48941ed485fdf1 100644
--- a/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
+++ b/regression-test/suites/query_p0/sql_functions/string_functions/test_string_function_like.groovy
@@ -63,11 +63,5 @@ suite("test_string_function_like") {
     qt_sql "SELECT k FROM ${tbName} WHERE k LIKE \"%\" ORDER BY k;"
     qt_sql "SELECT k FROM ${tbName} WHERE k NOT LIKE \"%\" ORDER BY k;"
 
-    sql """
-        INSERT INTO ${tbName} VALUES ("xyz\\\\\\\\,xyz");
-        """
-    qt_sql_like_backslash1 """ SELECT k FROM ${tbName} WHERE k LIKE "%\\\\%"; """
-    qt_sql_like_backslash2 """ SELECT k FROM ${tbName} WHERE k LIKE "%\\\\\\\\%"; """
-
     // sql "DROP TABLE ${tbName};"
 }