mysql 变量定义 sql查询

SET @idnoStr:=‘"idNo":"‘;
SELECT LOCATE(@idnoStr, param_array),
LOCATE(‘",‘, param_array,LOCATE(‘"idNo":"‘, param_array)),
SUBSTR(param_array,LOCATE(‘"idNo":"‘, param_array),
LOCATE(‘",‘, param_array,LOCATE(‘"idNo":"‘, param_array))-LOCATE(‘"idNo":"‘, param_array)
)
param_array FROM t_gl_adapter_param_input
 where creat_time BETWEEN ‘2018-12-01 16:37:41‘ and ‘2019-01-01 23:59:59‘
and service_type=‘qianhaiHaoxinduHcService‘
and param_array like ‘{"app%‘