MySQL-查詢數據操做（DQL）

單表查詢 SELECT查詢格式說明 SELECT select_expr [,select_expr...] [ FROM tnl_name [WHERE 條件] [GROUP BY {col_name|position} [ASC|DESC], ... 分組] [HAVING 條件 對分組結果進行二次篩選] [ORDER BY {col_name|position} [ASC|DESC], ..

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