postgresql 在postgres中用空值更新整数列
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时间：2020-09-09 06:27:51 来源:igfitidea点击:
Updating integer column with null values in postgres
提问by no_name
I would like to update my column with other column in other table. Before doing so, I would like to nullify my column(integer) first. However, below code did not work. (column_a: bigint; column_b: text)
我想用其他表中的其他列更新我的列。在这样做之前，我想先取消我的列（整数）。但是，下面的代码不起作用。（column_a：bigint；column_b：文本）
UPDATE table1
SET column_a IS NULL
WHERE column_b = 'XXX';
ERROR: syntax error at or near "ISNULL"
错误：“ISNULL”处或附近的语法错误
回答by shiv
This should be,
这应该是，
UPDATE table1
SET column_a = NULL
WHERE column_b = 'XXX';
