Mysql 常见报错总结
1.Operand should contain 1 column(s)
原因:
- 这个语句的出现多是因为将select 的结果集用()包住了
例如:
// 错误写法:
SELECT (id, shopify_session) from session_list WHERE user_id=111
// 正确写法:[注意没有小括号]
SELECT id, shopify_session from session_list WHERE user_id=111
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