[Feature][Stream Load] Add "show stream load" to show stream load record

docs/en/sql-reference/sql-statements/Data Manipulation/SHOW STREAM LOAD.md

@@ -0,0 +1,68 @@
+---
+{
+    "title": "SHOW STREAM LOAD",
+    "language": "en"
+}
+---
+
+<!-- 
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+# SHOW STREAM LOAD
+## Description
+This statement is used to show the execution of the specified import task
+Grammar:
+SHOW STREAM LOAD
+[FROM both names]
+[
+WHERE
+[LABEL [ = "your_label" | LIKE "label_matcher"]]
+[STATUS = ["SUCCESS"|"FAIL"|]]
+]
+[ORDER BY ...]
+[LIMIT limit][OFFSET offset];
+
+Explain:
+1) If db_name is not specified, use the current default DB
+2) If you use LABEL LIKE, the label that matches the task contains the STREAM LOAD task of label_matcher
+3) If LABEL = is used, the specified label is matched accurately.
+4) If STATUS is specified, the STREAM LOAD status is matched
+5) Arbitrary column combinations can be sorted using ORDER BY
+6) If LIMIT is specified, the limit bar matching record is displayed. Otherwise, all of them will be displayed.
+7) If OFFSET is specified, the query results are displayed from offset. By default, the offset is 0.
+
+## example
+1. Show all STREAM LOAD tasks of default DB
+SHOW STREAM LOAD;
+
+2. Show the STREAM LOAD task of the specified db. The label contains the string "2014_01_02", showing the oldest 10
+SHOW STREAM LOAD FROM example_db WHERE LABEL LIKE "2014_01_02" LIMIT 10;
+
+3. Show the STREAM LOAD task of the specified db, specify label as "load_example_db_20140102"
+SHOW STREAM LOAD FROM example_db WHERE LABEL = "load_example_db_20140102";
+
+4. Show the STREAM LOAD task of the specified db, specify status as "success", and sort it in descending order by LoadStartTime
+SHOW STREAM LOAD FROM example_db WHERE STATUS = "success" ORDER BY LoadStartTime DESC;
+
+5. Show the STREAM LOAD task of the specified dB and sort it in descending order by LoadStartTime, and display 10 query results starting with offset 5
+SHOW STREAM LOAD FROM example_db ORDER BY LoadStartTime DESC limit 5,10;
+SHOW STREAM LOAD FROM example_db ORDER BY LoadStartTime DESC limit 10 offset 5;
+
+## keyword
+SHOW,STREAM LOAD

docs/zh-CN/sql-reference/sql-statements/Data Manipulation/SHOW STREAM LOAD.md

@@ -0,0 +1,69 @@
+---
+{
+    "title": "SHOW STREAM LOAD",
+    "language": "zh-CN"
+}
+---
+
+<!-- 
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+# SHOW STREAM LOAD
+## description
+    该语句用于展示指定的Stream Load任务的执行情况
+    语法：
+        SHOW STREAM LOAD
+        [FROM db_name]
+        [
+            WHERE 
+            [LABEL [ = "your_label" | LIKE "label_matcher"]]
+            [STATUS = ["SUCCESS"|"FAIL"]]
+        ]
+        [ORDER BY ...]
+        [LIMIT limit][OFFSET offset];
+
+    说明：
+        1) 如果不指定 db_name，使用当前默认db
+        2) 如果使用 LABEL LIKE，则会匹配Stream Load任务的 label 包含 label_matcher 的任务
+        3) 如果使用 LABEL = ，则精确匹配指定的 label
+        4) 如果指定了 STATUS，则匹配 STREAM LOAD 状态
+        5) 可以使用 ORDER BY 对任意列组合进行排序
+        6) 如果指定了 LIMIT，则显示 limit 条匹配记录。否则全部显示
+        7) 如果指定了 OFFSET，则从偏移量offset开始显示查询结果。默认情况下偏移量为0。
+
+## example
+    1. 展示默认 db 的所有Stream Load任务
+        SHOW STREAM LOAD;
+
+    2. 展示指定 db 的Stream Load任务，label 中包含字符串 "2014_01_02"，展示最老的10个
+        SHOW STREAM LOAD FROM example_db WHERE LABEL LIKE "2014_01_02" LIMIT 10;
+
+    3. 展示指定 db 的Stream Load任务，指定 label 为 "load_example_db_20140102"
+        SHOW STREAM LOAD FROM example_db WHERE LABEL = "load_example_db_20140102";
+
+    4. 展示指定 db 的Stream Load任务，指定 status 为 "success", 并按 LoadStartTime 降序排序
+        SHOW STREAM LOAD FROM example_db WHERE STATUS = "success" ORDER BY LoadStartTime DESC;
+
+    5. 展示指定 db 的导入任务 并按 LoadStartTime 降序排序,并从偏移量5开始显示10条查询结果
+        SHOW STREAM LOAD FROM example_db ORDER BY LoadStartTime DESC limit 5,10;
+        SHOW STREAM LOAD FROM example_db ORDER BY LoadStartTime DESC limit 10 offset 5;
+
+## keyword
+    SHOW,STREAM LOAD
+

fe/fe-core/src/main/cup/sql_parser.cup

@@ -257,7 +257,7 @@ terminal String KW_ADD, KW_ADMIN, KW_AFTER, KW_AGGREGATE, KW_ALL, KW_ALTER, KW_A
     KW_REPAIR, KW_REPEATABLE, KW_REPOSITORY, KW_REPOSITORIES, KW_REPLACE, KW_REPLACE_IF_NOT_NULL, KW_REPLICA, KW_RESOURCE, KW_RESOURCES, KW_RESTORE, KW_RETURNS, KW_RESUME, KW_REVOKE,
     KW_RIGHT, KW_ROLE, KW_ROLES, KW_ROLLBACK, KW_ROLLUP, KW_ROUTINE, KW_ROW, KW_ROWS,
     KW_S3, KW_SCHEMA, KW_SCHEMAS, KW_SECOND, KW_SELECT, KW_SEMI, KW_SERIALIZABLE, KW_SESSION, KW_SET, KW_SETS, KW_SET_VAR, KW_SHOW, KW_SIGNED,
-    KW_SMALLINT, KW_SNAPSHOT, KW_SONAME, KW_SPLIT, KW_START, KW_STATUS, KW_STOP, KW_STORAGE, KW_STRING,
+    KW_SMALLINT, KW_SNAPSHOT, KW_SONAME, KW_SPLIT, KW_START, KW_STATUS, KW_STOP, KW_STORAGE, KW_STREAM, KW_STRING,
     KW_SUM, KW_SUPERUSER, KW_SYNC, KW_SYSTEM,
     KW_TABLE, KW_TABLES, KW_TABLET, KW_TASK, KW_TEMPORARY, KW_TERMINATED, KW_THAN, KW_TIME, KW_THEN, KW_TIMESTAMP, KW_TINYINT,
     KW_TO, KW_TRANSACTION, KW_TRIGGERS, KW_TRIM, KW_TRUE, KW_TRUNCATE, KW_TYPE, KW_TYPES,
@@ -2446,6 +2446,11 @@ show_param ::=
     {:
         RESULT = new ShowLoadStmt(db, parser.where, orderByClause, limitClause);
     :}
+    /* Show stream load statement */
+    | KW_STREAM KW_LOAD opt_db:db opt_wild_where order_by_clause:orderByClause limit_clause:limitClause
+    {:
+        RESULT = new ShowStreamLoadStmt(db, parser.where, orderByClause, limitClause);
+    :}
     /* Show export statement */
     | KW_EXPORT opt_db:db opt_wild_where order_by_clause:orderByClause limit_clause:limitClause
     {: