[NewFeature] Support ExternalCatalogResource to simplify external table manage operation.

docs/en/sql-reference/sql-statements/Data Definition/CREATE TABLE.md

@@ -94,6 +94,7 @@ Syntax:
        * BITMAP_UNION: Only for BITMAP type
     Allow NULL: Default is NOT NULL. NULL value should be represented as `\N` in load source file.
     Notice:  
+
         The origin value of BITMAP_UNION column should be TINYINT, SMALLINT, INT, BIGINT.
 2. index_definition
     Syntax:
@@ -133,14 +134,14 @@ Syntax:
             "line_delimiter" = "value_delimiter"
         )
         ```
-
+    
         ```
         BROKER PROPERTIES(
             "username" = "name",
             "password" = "password"
         )
         ```
-
+    
         For different broker, the broker properties are different
     Notice:
         Files name in "path" is separated by ",". If file name includes ",", use "%2c" instead.     If file name includes "%", use "%25" instead.
@@ -220,7 +221,7 @@ Syntax:
             ["replication_num" = "3"]
             )
         ```
-
+    
         storage_medium:         SSD or HDD, The default initial storage media can be specified by `default_storage_medium= XXX` in the fe configuration file `fe.conf`, or, if not, by default, HDD.
                                 Note: when FE configuration 'enable_strict_storage_medium_check' is' True ', if the corresponding storage medium is not set in the cluster, the construction clause 'Failed to find enough host in all backends with storage medium is SSD|HDD'.
         storage_cooldown_time:  If storage_medium is SSD, data will be automatically moved to HDD   when timeout.
@@ -246,9 +247,9 @@ Syntax:
             "colocate_with"="table1"
         )
         ```
-        
+
     4) if you want to use the dynamic partitioning feature, specify it in properties
-       
+
         ```
         PROPERTIES (
             "dynamic_partition.enable" = "true|false",
@@ -268,6 +269,7 @@ Syntax:
        Dynamic_partition. Prefix: used to specify the partition name prefix to be created, such as the partition name prefix p, automatically creates the partition name p20200108
 
        Dynamic_partition. Buckets: specifies the number of partition buckets that are automatically created
+       ```
 8. rollup_index
     grammar:
     ```
@@ -320,6 +322,7 @@ Syntax:
     "storage_medium" = "SSD",
     "storage_cooldown_time" = "2015-06-04 00:00:00"
     );
+    ```
 
 3. Create an olap table, with range partitioned, distributed by hash.
 
@@ -347,16 +350,16 @@ Syntax:
     "storage_medium" = "SSD", "storage_cooldown_time" = "2015-06-04 00:00:00"
     );
     ```
-
+    
     Explain:
     This statement will create 3 partitions:
-
+    
     ```
     ( {    MIN     },   {"2014-01-01"} )
     [ {"2014-01-01"},   {"2014-06-01"} )
     [ {"2014-06-01"},   {"2014-12-01"} )
     ```
-
+    
     Data outside these ranges will not be loaded.
 
 2) Fixed Range
@@ -381,8 +384,8 @@ Syntax:
     );
 
 4. Create a mysql table
-
-    ```
+   4.1 Create MySQL table directly from external table information
+```
     CREATE EXTERNAL TABLE example_db.table_mysql
     (
     k1 DATE,
@@ -400,8 +403,38 @@ Syntax:
     "password" = "mysql_passwd",
     "database" = "mysql_db_test",
     "table" = "mysql_table_test"
-    );
-    ```
+    )
+```
+
+   4.2 Create MySQL table with external ODBC catalog resource
+```
+   CREATE EXTERNAL RESOURCE "mysql_resource" 
+   PROPERTIES
+   (
+     "type" = "odbc_catalog",
+     "user" = "mysql_user",
+     "password" = "mysql_passwd",
+     "host" = "127.0.0.1",
+     "port" = "8239"			
+   );
+```
+```
+    CREATE EXTERNAL TABLE example_db.table_mysql
+    (
+    k1 DATE,
+    k2 INT,
+    k3 SMALLINT,
+    k4 VARCHAR(2048),
+    k5 DATETIME
+    )
+    ENGINE=mysql
+    PROPERTIES
+    (
+    "odbc_catalog_resource" = "mysql_resource",
+    "database" = "mysql_db_test",
+    "table" = "mysql_table_test"
+    )
+```
 
 5. Create a broker table, with file on HDFS, line delimit by "|", column separated by "\n"
 
@@ -549,7 +582,7 @@ Syntax:
         "dynamic_partition.prefix" = "p",
         "dynamic_partition.buckets" = "32"
          );
-    ```
+     ```
 12. Create a table with rollup index
 ```
     CREATE TABLE example_db.rolup_index_table

docs/zh-CN/sql-reference/sql-statements/Data Definition/CREATE TABLE.md

@@ -151,15 +151,15 @@ under the License.
     注意：
         "path" 中如果有多个文件，用逗号[,]分割。如果文件名中包含逗号，那么使用 %2c 来替代。如果文件名中包含 %，使用 %25 代替
         现在文件内容格式支持CSV，支持GZ，BZ2，LZ4，LZO(LZOP) 压缩格式。
-
+    
     3) 如果是 hive，则需要在 properties 提供以下信息：
     ```
     PROPERTIES (
         "database" = "hive_db_name",
         "table" = "hive_table_name",
         "hive.metastore.uris" = "thrift://127.0.0.1:9083"
     )
-
+    
     ```
     其中 database 是 hive 表对应的库名字，table 是 hive 表的名字，hive.metastore.uris 是 hive metastore 服务地址。
     注意：目前hive外部表仅用于Spark Load使用，不支持查询。
@@ -193,7 +193,7 @@ under the License.
             ...
             )
         ```
-
+        
         说明：
             使用指定的 key 列和指定的数值范围进行分区。
             1) 分区名称仅支持字母开头，字母、数字和下划线组成
@@ -202,7 +202,7 @@ under the License.
             3) 分区为左闭右开区间，首个分区的左边界为做最小值
             4) NULL 值只会存放在包含最小值的分区中。当包含最小值的分区被删除后，NULL 值将无法导入。
             5) 可以指定一列或多列作为分区列。如果分区值缺省，则会默认填充最小值。
-
+        
         注意：
             1) 分区一般用于时间维度的数据管理
             2) 有数据回溯需求的，可以考虑首个分区为空分区，以便后续增加分区
@@ -270,9 +270,9 @@ under the License.
            "colocate_with"="table1"
            )
 ```
-    
+
     4) 如果希望使用动态分区特性，需要在properties 中指定
-    
+
 ```
       PROPERTIES (
           "dynamic_partition.enable" = "true|false",
@@ -288,15 +288,15 @@ under the License.
     dynamic_partition.end: 用于指定提前创建的分区数量。值必须大于0。
     dynamic_partition.prefix: 用于指定创建的分区名前缀，例如分区名前缀为p，则自动创建分区名为p20200108
     dynamic_partition.buckets: 用于指定自动创建的分区分桶数量
-
+    
     5) 建表时可以批量创建多个 Rollup
     语法：
     ```
         ROLLUP (rollup_name (column_name1, column_name2, ...)
                [FROM from_index_name]
                 [PROPERTIES ("key"="value", ...)],...)
     ```
-
+    
     6) 如果希望使用 内存表 特性，需要在 properties 中指定
 
 ```
@@ -419,6 +419,7 @@ under the License.
 
 4. 创建一个 mysql 表
 
+   4.1 直接通过外表信息创建mysql表
 ```
     CREATE EXTERNAL TABLE example_db.table_mysql
     (
@@ -440,6 +441,36 @@ under the License.
     )
 ```
 
+   4.2 通过External Catalog Resource创建mysql表
+```
+   CREATE EXTERNAL RESOURCE "mysql_resource" 
+   PROPERTIES
+   (
+     "type" = "odbc_catalog",
+     "user" = "mysql_user",
+     "password" = "mysql_passwd",
+     "host" = "127.0.0.1",
+      "port" = "8239"			
+   );
+```
+```
+    CREATE EXTERNAL TABLE example_db.table_mysql
+    (
+    k1 DATE,
+    k2 INT,
+    k3 SMALLINT,
+    k4 VARCHAR(2048),
+    k5 DATETIME
+    )
+    ENGINE=mysql
+    PROPERTIES
+    (
+    "odbc_catalog_resource" = "mysql_resource",
+    "database" = "mysql_db_test",
+    "table" = "mysql_table_test"
+    )
+```
+
 5. 创建一个数据文件存储在HDFS上的 broker 外部表, 数据使用 "|" 分割，"\n" 换行
 
 ```
@@ -650,3 +681,5 @@ under the License.
 ## keyword
 
     CREATE,TABLE
+
+```

fe/fe-core/src/main/java/org/apache/doris/analysis/ShowResourcesStmt.java

@@ -215,7 +215,7 @@ private void analyzeSubPredicate(Expr subExpr) throws AnalysisException {
 
         if (!valid) {
             throw new AnalysisException("Where clause should looks like: NAME = \"your_resource_name\","
-                    + " or NAME LIKE \"matcher\", " + " or RESOURCETYPE = \"SPARK\", "
+                    + " or NAME LIKE \"matcher\", " + " or RESOURCETYPE = \"resource_type\", "
                     + " or compound predicate with operator AND");
         }
     }

fe/fe-core/src/main/java/org/apache/doris/catalog/Catalog.java

@@ -4059,10 +4059,14 @@ public static void getDdlStmt(Table table, List<String> createTableStmt, List<St
             }
             // properties
             sb.append("\nPROPERTIES (\n");
-            sb.append("\"host\" = \"").append(mysqlTable.getHost()).append("\",\n");
-            sb.append("\"port\" = \"").append(mysqlTable.getPort()).append("\",\n");
-            sb.append("\"user\" = \"").append(mysqlTable.getUserName()).append("\",\n");
-            sb.append("\"password\" = \"").append(hidePassword ? "" : mysqlTable.getPasswd()).append("\",\n");
+            if (mysqlTable.getOdbcCatalogResourceName() == null) {
+                sb.append("\"host\" = \"").append(mysqlTable.getHost()).append("\",\n");
+                sb.append("\"port\" = \"").append(mysqlTable.getPort()).append("\",\n");
+                sb.append("\"user\" = \"").append(mysqlTable.getUserName()).append("\",\n");
+                sb.append("\"password\" = \"").append(hidePassword ? "" : mysqlTable.getPasswd()).append("\",\n");
+            } else {
+                sb.append("\"odbc_catalog_resource\" = \"").append(mysqlTable.getOdbcCatalogResourceName()).append("\",\n");
+            }
             sb.append("\"database\" = \"").append(mysqlTable.getMysqlDatabaseName()).append("\",\n");
             sb.append("\"table\" = \"").append(mysqlTable.getMysqlTableName()).append("\"\n");
             sb.append(")");
@@ -4073,14 +4077,18 @@ public static void getDdlStmt(Table table, List<String> createTableStmt, List<St
             }
             // properties
             sb.append("\nPROPERTIES (\n");
-            sb.append("\"host\" = \"").append(odbcTable.getHost()).append("\",\n");
-            sb.append("\"port\" = \"").append(odbcTable.getPort()).append("\",\n");
-            sb.append("\"user\" = \"").append(odbcTable.getUserName()).append("\",\n");
-            sb.append("\"password\" = \"").append(hidePassword ? "" : odbcTable.getPasswd()).append("\",\n");
+            if (odbcTable.getOdbcCatalogResourceName() == null) {
+                sb.append("\"host\" = \"").append(odbcTable.getHost()).append("\",\n");
+                sb.append("\"port\" = \"").append(odbcTable.getPort()).append("\",\n");
+                sb.append("\"user\" = \"").append(odbcTable.getUserName()).append("\",\n");
+                sb.append("\"password\" = \"").append(hidePassword ? "" : odbcTable.getPasswd()).append("\",\n");
+                sb.append("\"driver\" = \"").append(odbcTable.getOdbcDriver()).append("\",\n");
+                sb.append("\"odbc_type\" = \"").append(odbcTable.getOdbcTableTypeName()).append("\",\n");
+            } else {
+                sb.append("\"odbc_catalog_resource\" = \"").append(odbcTable.getOdbcCatalogResourceName()).append("\",\n");
+            }
             sb.append("\"database\" = \"").append(odbcTable.getOdbcDatabaseName()).append("\",\n");
-            sb.append("\"table\" = \"").append(odbcTable.getOdbcTableName()).append("\",\n");
-            sb.append("\"driver\" = \"").append(odbcTable.getOdbcDriver()).append("\",\n");
-            sb.append("\"type\" = \"").append(odbcTable.getOdbcTableTypeName()).append("\"\n");
+            sb.append("\"table\" = \"").append(odbcTable.getOdbcTableName()).append("\"\n");
             sb.append(")");
         } else if (table.getType() == TableType.BROKER) {
             BrokerTable brokerTable = (BrokerTable) table;