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Mysql查询结果添加序列号

2018-01-10 15:43 501 查看

单表

从0开始

SELECT
(@i := @i + 1) AS id
FROM
sys_region n1,
(SELECT @i := - 1) AS it
LIMIT 1000


从1开始

SELECT
(@i := @i + 1) AS id
FROM
sys_region n1,
(SELECT @i := 0) AS it
LIMIT 1000


多表

从0开始

SELECT
(@i := @i + 1) AS id
FROM
sys_region n1
CROSS JOIN sys_region AS n10
CROSS JOIN sys_region AS n100,
(SELECT @i := - 1) AS it
LIMIT 1000


从1开始

SELECT
(@i := @i + 1) AS id
FROM
sys_region n1
CROSS JOIN sys_region AS n10
CROSS JOIN sys_region AS n100,
(SELECT @i := 0) AS it
LIMIT 1000
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标签：  mysql 序列号
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