#sql
CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ... ELSE resultn END
SQL 脚本中如何定义变量？
sql
SET @ps_id := (SELECT MAX(id) FROM datacenter.DC_POWER_STATION);SET @ps_id := (SELECT MAX(id) FROM datacenter.DC_POWER_STATION);// 自增