UPDATE
语句结合CASE
表达式来实现批量更新。,,``sql,UPDATE table_name SET column_name = CASE, WHEN condition1 THEN value1, WHEN condition2 THEN value2, ..., ELSE default_value,END;,
``UPDATE
语句结合CASE
表达式来实现批量更新。,,``sql,UPDATE table_name SET column_name = CASE, WHEN condition1 THEN value1, WHEN condition2 THEN value2, ..., ELSE default_value,END;,
``CASE
语句来实现。以下是一个示例:,,``sql,UPDATE your_table,SET column_name = CASE id, WHEN 1 THEN 'value1', WHEN 2 THEN 'value2', WHEN 3 THEN 'value3', -继续添加其他条件,END,WHERE id IN (1, 2, 3); -指定要更新的ID,
`,,这个语句会根据不同的
id 值更新
column_name` 列的值。请根据你的实际需求替换表名、列名和条件。sql,UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;,
`,,
table_name是表名,
column1和
column2是要更新的列,
value1和
value2是新的值,
condition`是更新条件。UPDATE
语句结合 JOIN
或子查询实现批量更新标签。Powered By Z-BlogPHP 1.7.3