[CP] Create table or view from recursive cte not support in mysql mode

src/sql/ob_select_stmt_printer.cpp

@@ -825,7 +825,7 @@ int ObSelectStmtPrinter::print_for_update()
 int ObSelectStmtPrinter::print_with()
 {
   int ret = OB_SUCCESS;
-  DATA_PRINTF(is_oracle_mode() ? "WITH " : "WITH RECURSIVE");
+  DATA_PRINTF(is_oracle_mode() ? "WITH " : "WITH RECURSIVE ");
   if (OB_SUCC(ret)) {
     const ObSelectStmt* select_stmt = static_cast<const ObSelectStmt*>(stmt_);
     const common::ObIArray<TableItem*>& cte_tables = select_stmt->get_CTE_table_items();
@@ -869,9 +869,9 @@ int ObSelectStmtPrinter::print_cte_define_title(TableItem* cte_table)
   int ret = OB_SUCCESS;
   ObSelectStmt* sub_select_stmt = NULL;
   PRINT_TABLE_NAME(cte_table);
-  if (OB_ISNULL(cte_table->node_->children_[1]) && (TableItem::RECURSIVE_CTE == cte_table->cte_type_)) {
+  if (OB_ISNULL(cte_table) || OB_ISNULL(cte_table->ref_query_)) {
     ret = OB_ERR_UNEXPECTED;
-    LOG_WARN("the recursive cte must have the colume definition", K(ret));
+    LOG_WARN("unexpect null params", K(ret));
   } else if (OB_NOT_NULL(cte_table->node_->children_[1])) {
     DATA_PRINTF("(");
     sub_select_stmt = cte_table->ref_query_;
@@ -892,7 +892,7 @@ int ObSelectStmtPrinter::print_cte_define_title(TableItem* cte_table)
     }
     DATA_PRINTF(")");
   } else {
-    // do nothing, the normal cte without column alias is OK
+    //do nothing, the normal cte without column alias is OK
   }
   DATA_PRINTF(" as ");
   return ret;

tools/deploy/mysql_test/test_suite/with_clause_mysql/r/mysql/cte_without_explain_mysql.result

@@ -528,7 +528,7 @@ create view v1 as
  with RECURSIVE qn (foo, bar) as (select 1,1 from dual) select * from qn;
 show create view v1;
 View	Create View	character_set_client	collation_connection
-v1	CREATE VIEW `v1` AS WITH RECURSIVE`qn`(foo, bar) as (select 1 AS `foo`,1 AS `bar`) select `qn`.`foo` AS `foo`,`qn`.`bar` AS `bar` from  qn	utf8mb4	utf8mb4_general_ci
+v1	CREATE VIEW `v1` AS WITH RECURSIVE `qn`(foo, bar) as (select 1 AS `foo`,1 AS `bar`) select `qn`.`foo` AS `foo`,`qn`.`bar` AS `bar` from  qn	utf8mb4	utf8mb4_general_ci
 
 select * from v1;
 +-----+-----+
@@ -541,7 +541,7 @@ create view v1 as
  with RECURSIVE qn (foo, bar) as (select 1,1 from t1) select * from qn;
 show create view v1;
 View	Create View	character_set_client	collation_connection
-v1	CREATE VIEW `v1` AS WITH RECURSIVE`qn`(foo, bar) as (select 1 AS `foo`,1 AS `bar` from `cte_st`.`t1`) select `qn`.`foo` AS `foo`,`qn`.`bar` AS `bar` from  qn	utf8mb4	utf8mb4_general_ci
+v1	CREATE VIEW `v1` AS WITH RECURSIVE `qn`(foo, bar) as (select 1 AS `foo`,1 AS `bar` from `cte_st`.`t1`) select `qn`.`foo` AS `foo`,`qn`.`bar` AS `bar` from  qn	utf8mb4	utf8mb4_general_ci
 select * from v1;
 +-----+-----+
 | foo | bar |
@@ -588,7 +588,7 @@ select (with RECURSIVE qn as (select 'with RECURSIVE' from dual) select * from q
 from dual;
 show create view v;
 View	Create View	character_set_client	collation_connection
-v	CREATE VIEW `v` AS select (WITH RECURSIVE`qn` as (select 'with RECURSIVE' AS `with RECURSIVE`) select `qn`.`with RECURSIVE` from  qn) AS `scal_subq`	utf8mb4	utf8mb4_general_ci
+v	CREATE VIEW `v` AS select (WITH RECURSIVE `qn` as (select 'with RECURSIVE' AS `with RECURSIVE`) select `qn`.`with RECURSIVE` from  qn) AS `scal_subq`	utf8mb4	utf8mb4_general_ci
 select * from v;
 +----------------+
 | scal_subq      |
@@ -599,7 +599,7 @@ drop view v;
 create view v as select * from (with RECURSIVE qn as (select 'with RECURSIVE' from dual) select * from qn)  dt;
 show create view v;
 View	Create View	character_set_client	collation_connection
-v	CREATE VIEW `v` AS select `dt`.`with RECURSIVE` AS `with RECURSIVE` from (WITH RECURSIVE`qn` as (select 'with RECURSIVE' AS `with RECURSIVE`) select `qn`.`with RECURSIVE` AS `with RECURSIVE` from  qn) dt	utf8mb4	utf8mb4_general_ci
+v	CREATE VIEW `v` AS select `dt`.`with RECURSIVE` AS `with RECURSIVE` from (WITH RECURSIVE `qn` as (select 'with RECURSIVE' AS `with RECURSIVE`) select `qn`.`with RECURSIVE` AS `with RECURSIVE` from  qn) dt	utf8mb4	utf8mb4_general_ci
 select * from v;
 +----------------+
 | with RECURSIVE |

tools/deploy/mysql_test/test_suite/with_clause_mysql/r/mysql/recursive_bug_mysql.result

@@ -107,4 +107,128 @@ SELECT * FROM employee_paths ORDER BY name;
 |  692 | Tarek   | 333,692         |
 |  333 | Yasmina | 333             |
 +------+---------+-----------------+
+
+##bugfix: https://work.aone.alibaba-inc.com/issue/42792696
+create table t1_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select * from cte);
+create table t2_from_cte as (with recursive cte(c) as (select 1 union all select c+1 from cte where c < 3) select * from cte);
+create table t3_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select c as cc from cte);
+
+select * from t1_from_cte;
++------+
+| c    |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+select * from t2_from_cte;
++------+
+| c    |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+select * from t3_from_cte;
++------+
+| cc   |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+
+desc t1_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| c     | bigint(1) | YES  |     | NULL    |       |
++-------+-----------+------+-----+---------+-------+
+desc t2_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| c     | bigint(1) | YES  |     | NULL    |       |
++-------+-----------+------+-----+---------+-------+
+desc t3_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| cc    | bigint(1) | YES  |     | NULL    |       |
++-------+-----------+------+-----+---------+-------+
+
+show create table t1_from_cte;
+Table	Create Table
+t1_from_cte	CREATE TABLE `t1_from_cte` (
+  `c` bigint(1) DEFAULT NULL
+) DEFAULT CHARSET = utf8mb4 COMPRESSION = 'lz4_1.0' REPLICA_NUM = NUM BLOCK_SIZE = SIZE USE_BLOOM_FILTER = FALSE TABLET_SIZE = SIZE PCTFREE = 10
+show create table t2_from_cte;
+Table	Create Table
+t2_from_cte	CREATE TABLE `t2_from_cte` (
+  `c` bigint(1) DEFAULT NULL
+) DEFAULT CHARSET = utf8mb4 COMPRESSION = 'lz4_1.0' REPLICA_NUM = NUM BLOCK_SIZE = SIZE USE_BLOOM_FILTER = FALSE TABLET_SIZE = SIZE PCTFREE = 10
+show create table t3_from_cte;
+Table	Create Table
+t3_from_cte	CREATE TABLE `t3_from_cte` (
+  `cc` bigint(1) DEFAULT NULL
+) DEFAULT CHARSET = utf8mb4 COMPRESSION = 'lz4_1.0' REPLICA_NUM = NUM BLOCK_SIZE = SIZE USE_BLOOM_FILTER = FALSE TABLET_SIZE = SIZE PCTFREE = 10
+
+create view v1_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select * from cte);
+create view v2_from_cte as (with recursive cte(c) as (select 1 union all select c+1 from cte where c < 3) select * from cte);
+create view v3_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select c as cc from cte);
+
+select * from v1_from_cte;
++------+
+| c    |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+select * from v2_from_cte;
++------+
+| c    |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+select * from v3_from_cte;
++------+
+| cc   |
++------+
+|    1 |
+|    2 |
+|    3 |
++------+
+
+desc v1_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| c     | bigint(1) | NO   |     |         |       |
++-------+-----------+------+-----+---------+-------+
+desc v2_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| c     | bigint(1) | NO   |     |         |       |
++-------+-----------+------+-----+---------+-------+
+desc v3_from_cte;
++-------+-----------+------+-----+---------+-------+
+| Field | Type      | Null | Key | Default | Extra |
++-------+-----------+------+-----+---------+-------+
+| cc    | bigint(1) | NO   |     |         |       |
++-------+-----------+------+-----+---------+-------+
+
+show create view v1_from_cte;
+View	Create View	character_set_client	collation_connection
+v1_from_cte	CREATE VIEW `v1_from_cte` AS WITH RECURSIVE `cte` as ((select 1 AS `c`) union  all (select (`cte`.`c` + 1) AS `c+1` from `cte` where (`cte`.`c` < 3))) select `cte`.`c` AS `c` from  cte	utf8mb4	utf8mb4_general_ci
+show create view v2_from_cte;
+View	Create View	character_set_client	collation_connection
+v2_from_cte	CREATE VIEW `v2_from_cte` AS WITH RECURSIVE `cte`(c) as ((select 1 AS `1`) union  all (select (`cte`.`c` + 1) AS `c+1` from `cte` where (`cte`.`c` < 3))) select `cte`.`c` AS `c` from  cte	utf8mb4	utf8mb4_general_ci
+show create view v3_from_cte;
+View	Create View	character_set_client	collation_connection
+v3_from_cte	CREATE VIEW `v3_from_cte` AS WITH RECURSIVE `cte` as ((select 1 AS `c`) union  all (select (`cte`.`c` + 1) AS `c+1` from `cte` where (`cte`.`c` < 3))) select `cte`.`c` AS `cc` from  cte	utf8mb4	utf8mb4_general_ci
+
 drop database cte_st;

tools/deploy/mysql_test/test_suite/with_clause_mysql/t/recursive_bug_mysql.test

@@ -81,4 +81,48 @@ WITH RECURSIVE employee_paths (id, name, path) AS
       ON ep.id = e.manager_id
 )
 SELECT * FROM employee_paths ORDER BY name;
+
+
+--echo ##bugfix: https://work.aone.alibaba-inc.com/issue/42792696
+
+create table t1_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select * from cte);
+create table t2_from_cte as (with recursive cte(c) as (select 1 union all select c+1 from cte where c < 3) select * from cte);
+create table t3_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select c as cc from cte);
+
+select * from t1_from_cte;
+select * from t2_from_cte;
+select * from t3_from_cte;
+
+desc t1_from_cte;
+desc t2_from_cte;
+desc t3_from_cte;
+
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create table t1_from_cte;
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create table t2_from_cte;
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create table t3_from_cte;
+
+
+create view v1_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select * from cte);
+create view v2_from_cte as (with recursive cte(c) as (select 1 union all select c+1 from cte where c < 3) select * from cte);
+create view v3_from_cte as (with recursive cte as (select 1 as c union all select c+1 from cte where c < 3) select c as cc from cte);
+
+select * from v1_from_cte;
+select * from v2_from_cte;
+select * from v3_from_cte;
+
+desc v1_from_cte;
+desc v2_from_cte;
+desc v3_from_cte;
+
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create view v1_from_cte;
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create view v2_from_cte;
+--source mysql_test/include/show_create_table_old_version_replica2.inc
+show create view v3_from_cte;
+
+
 drop database cte_st;
\ No newline at end of file