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Mysql pdo 获得行范围
原标题:mysql pdo get range of rows

我有一个有大约100行的表格, 我想每次得到数字和数字之间的行, 像这样

如果`i=1 ',我想得到行'0 1 2 3 4 '

如果`i=2'我想得到5 6 7 7 8 9 '

如果`i=3'我想得到10 11 12 12 13 14 '

and maybe the last value of i will just take 3 or 4 rows not 5 i think the solution will be something like this

select * from question limit (i-1)*5 , i*5-1

但是不工作, 因为我不知道如何在查询中使用变量, 当我尝试 i=1 时, 它不工作, 我有一个语法错误

最佳回答

LIMIT 的第一个参数是零基起始行索引。第二个参数是行数。所以,如果你总是在寻找五个行:

SELECT * FROM question LIMIT (i-1)*5 , 5

(您必须用构建查询所使用的语言计算 < code> (i-1) * 5 , 并将实际数字传送到 MySQL ) 。

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