sql查询count 单独字段不同值

1.单表查询

 SELECT COUNT(CASE WHEN (字段=值列1) THEN reportstatus END) AS 已上报,COUNT(CASE WHEN (字段=值列0) THEN 字段 END) AS 未上报,
字段部门名称 AS NAME,LEFT(字段编号,限制长度6) AS CODE FROM 表名 WHERE 判断 GROUP BY LEFT(字段编号,限制长度6)

2.两表查询

SELECT  a.已上报,a.未上报,a.别名,a.别名,d.关联字段  FROM (
 SELECT COUNT(CASE WHEN (字段=值列1) THEN reportstatus END) AS 已上报,COUNT(CASE WHEN (字段=值列0) THEN 字段 END) AS 未上报,
字段部门名称 AS NAME,LEFT(字段编号,限制长度6) AS CODE FROM 表名 WHERE 判断 GROUP BY LEFT(字段编号,限制长度6) ) a,表名 d WHERE 判断a.code = d.code

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