ORA-39753: unsupported use of subquery in PARTITIONED OUTER JOIN condition ORACLE 报错 故障修复 远程处理

文档解释

ORA-39753: unsupported use of subquery in PARTITIONED OUTER JOIN condition

Cause: An attempt was made to use subquery in PARTITIONED OUTER JOIN condition.

Action: Remove subquery from the join condition.

ORA-39753（ unsupported use of subquery in PARTITIONED OUTER JOIN condition）错误指的是，在分割外连接条件中使用子查询是不受支持的。

官方解释

ORA-39753在分割外连接条件中使用子查询是不受支持的。

常见案例

SELECT * FROM table1

LEFT OUTER JOIN table2

ON table1.a = table2.a

WHERE table2.a IN (SELECT a FROM table3)

一般处理方法及步骤

1. 修改查询，使用JOIN替代WHERE子句中包含子查询的分割外连接：

SELECT * FROM table1

LEFT OUTER JOIN table2

ON table1.a = table2.a

LEFT OUTER JOIN table3

ON table3.a = table2.a

2. 针对子查询中的条件进行优化：

SELECT * FROM table1

LEFT OUTER JOIN table2

ON table1.a = table2.a

LEFT OUTER JOIN table3

ON table3.a = table2.a

WHERE EXISTS (SELECT a FROM table3 WHERE table2.a = table3.a)