select 语句占位符
对于已预备的语句,可以使用位置保持符。以下语句将从tb1表中返回一行:
mysql> SET @a=1;
mysql> PREPARE STMT FROM "SELECT * FROM tbl LIMIT ?";
mysql> EXECUTE STMT USING @a;
以下语句将从tb1表中返回第二到第六行:
mysql> SET @skip=1; SET @numrows=5;
mysql> PREPARE STMT FROM "SELECT * FROM tbl LIMIT ?, ?";
mysql> EXECUTE STMT USING @skip, @numrows;
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