【已解决】Mysql插入数据从另外一个表查询，并且动态判断值展示

Mysql插入数据从另外一个表查询，并且动态判断值展示。

其他细节待补充。

分析：

一、需要先得到正确的查询关系

SELECT cpn_name,cpn_type,sub_code,
IF(1=1, (SELECT * FROM (SELECT id FROM  B表 WHERE TYPE = 4 AND NAME = '七号楼') X), 0) AS 'building_number'
,(SELECT  b.id  FROM B表 b JOIN smart_therm.t_ly_cpn a ON a.floor = b.mapping_value
 WHERE a.id = X.id AND b.type = 5) AS FLOOR,group_id,show_name,sub_system_flag,is_show,location,true_cpn_name,assist_cpn_name,dev_num,AREA,remark,module_name,district FROM A表 X ;

二、采用insert into语句

INSERT? ?INTO? 新表 (字段1，字段2，字段三,......)

SELECT 字段1,字段2,

IF(1=1, (SELECT * FROM (SELECT id FROM? B表 WHERE TYPE = 4 AND NAME = '七号楼') X), 0) AS 'building_number'

,字段N FROM A表 ;