(1)第一次执行时分组行号不起作用
1.按指定排序获取数据:
select * from table order by type
2.给获取的结果增加统计字段:
@num:=IF(@groups=`type`,@num+1,IF(@groups:=`type`,1,1)) as total
3.组合语句:
SELECT wid,name,type,@num:=IF(@groups=`type`,@num+1,IF(@groups:=`type`,1,1)) as total FROM w_websites ORDER BY type
(2)分组加行号
SELECT a.type,IF(@v<>a.type,@r:=1,@r:=@r+1) as total,IF(@v<>a.type,@v:=a.type,@v) as ctype FROM (SELECT @r:=0,@v:=-1) as c,w_websites a INNER JOIN xxx b ON xxx WHERE xxx ORDER BY xxx
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