在PostgreSQL中,虽然没有直接的DELETE JOIN语法,但可以通过使用DELETE语句结合USING子句或子查询来实现类似的功能。下面我将详细解释如何在PostgreSQL中使用DELETE JOIN的方式删除数据。 1. 使用 USING 子句 这是PostgreSQL推荐的方式,因为它通常比子查询性能更好。语法如下: sql DELETE FROM table1 USING table2 WHERE ...
delete from test1 a using test2 b where a.id<b.id and a.name=b.name; 1. using 有点类似子查询,可以关联包含在where子语句中的字段的表。本例子中的a.id
根本原因在于 delete t from table t where t.id = 1 这样的语法只有mysql中能使用,希望后续能兼容其它数据库的语法 👎 1 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Assignees No one assigned Labels None yet Projects None yet Milestone...
It is used to delete table records or rows. We can join two tables with the “using” keyword in PostgreSQL, after table joins, it will delete the specified rows from the specified table. It is used to delete the rows using with and without where conditions. We can also delete the rows...
postgresql Delete+ join 2016-03-07 16:07 −... 白开水皮皮 1 3842 delete from inner join 2011-07-26 17:14 −Update Update XXX set XXX where 这种写法大家肯定都知道,才发现update和delete居然支持inner join的update方式,这个在表间关联来做更新和删除操作非常有用. 列子: Sql代码 update tb_Use...
1) Using PostgreSQL DELETE to delete one row from the table The following statement uses theDELETEstatement to delete one row with the id 1 from thetodostable: DELETEFROMtodosWHEREid=1; The statement returns 1 indicating that one row has been deleted: ...
根据PostgreSQLdocumentation，您不能在DELETE中使用JOIN：
WHERE u.arch_id=b.arch_id and d.balance=0 and u.rec_no='2021090306002' 二、想用多表关联查询并且delete删除指定表数据 DELETE FROM t_tableA tc using t_tableB tp WHERE tc.part_no=tp.part_no and cdata_interval='1' 需要用using来关联两个表,而不能用join。 以上完毕。
对多列使用IN运算符
USING department_tmp WHERE department.dept_id = department_tmp.dept_id; Step3 At last, we will query thedepartment tableto check the delete operation is working fine or not. PostgreSQL deletes all rows from a table In this, we do not use the WHERE condition in the below DELETE command fo...