分布式数据库中间件 DDM-SELECT Subquery Syntax:The Subquery as Scalar Operand

时间:2023-11-01 16:17:05

The Subquery as Scalar Operand

示例

SELECT (SELECT id FROM test1 where id=1);         SELECT (SELECT id FROM test2 where id=1)FROM test1;              SELECT UPPER((SELECT name FROM test1 limit 1)) FROM test2;
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