英 ['h?v??]? ?美 ['h?v??]??

n.所有,持有

v.有( have的現(xiàn)在分詞 );(親屬關(guān)系中)接受;拿;買(mǎi)到

mysql HAVING語(yǔ)句 語(yǔ)法

作用:在 SQL 中增加 HAVING 子句原因是,WHERE 關(guān)鍵字無(wú)法與合計(jì)函數(shù)一起使用。

語(yǔ)法:SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name HAVING aggregate_function(column_name) operator value

mysql HAVING語(yǔ)句 示例

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