mysql 存儲過程動態執行sql語句，mysqlsql

mysql 存儲過程動態執行sql語句，mysqlsql

 之前經常在程序中拼接sql語句，其實我們也可以在存儲過程中拼接sql 語句，動態的執行~~

 代碼如下：
 

DROP PROCEDURE IF EXISTS SearchByDoctor;
CREATE PROCEDURE SearchByDoctor(
IN DoctorId VARCHAR(50),
IN deptId VARCHAR(50),
IN beginDate VARCHAR(20),
IN endDate VARCHAR(20),
IN StandDeptId VARCHAR(50),
IN OperationFlag VARCHAR(50),
IN SsczflId VARCHAR(50),
OUT OperNum INT,
OUT AvgDangerIndex DOUBLE,
OUT OperGrCase INT
)
BEGIN
DECLARE cal1 VARCHAR(800);
DECLARE cal2 VARCHAR(800);

SET cal1="SELECT COUNT(1),AVG(DANGER_INDEX) INTO @para1,@para2 FROM yw_ssxxb WHERE 1=1 ";
SET cal2="SELECT COUNT(1) INTO @para3 FROM gr_grbw WHERE OPE_RELID IN (SELECT RELID FROM yw_ssxxb WHERE 1=1";

#拼接醫生id
SET cal1=CONCAT(cal1," ","AND OPEDOC_ID = ","'",DoctorId,"'");
SET cal2=CONCAT(cal2," ","AND OPEDOC_ID = ","'",DoctorId,"'");

#拼接科室id
IF deptId <>'' THEN
SET cal1=CONCAT(cal1,"AND DEPT_ID =","'",deptId,"'");
END IF;

#拼接開始結束日期
IF beginDate<>'' AND endDate <>'' THEN
SET cal1=CONCAT(cal1," ","AND OPER_AT BETWEEN ","'",beginDate,"'"," AND ","'",endDate,"'");
END IF;

#拼接標准科室
IF StandDeptId<>'' THEN
SET cal1=CONCAT(cal1," ","AND DEPT_ID IN ( SELECT ID FROM department WHERE STAND_DEPT_ID = ","'",StandDeptId,"'",")");
END IF;

#拼接數據來源
IF OperationFlag <>'' THEN
SET cal1=CONCAT(cal1," ","AND OPEPARTKINDID IN (SELECT ID FROM zh_ssczfl WHERE FLAG= ","'",OperationFlag,"'",")");
END IF;

#拼接手術操作類別
IF SsczflId <> '' THEN
SET cal1=CONCAT(cal1," ","AND OPEPARTKINDID = ","'",SsczflId,"'");
END IF;

SET cal2 =CONCAT(cal2,")");

SET @sql1=cal1;
SET @sql2=cal2;

PREPARE stmt1 FROM @sql1;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1 ;

PREPARE stmt2 FROM @sql2;
EXECUTE stmt2;
DEALLOCATE PREPARE stmt2 ;

SET OperNum=@para1;
SET AvgDangerIndex=@para2;
SET OperGrCase=@para3;

END;

 涉及到的具體的業務邏輯就不介紹了，語法方面還是可以參照下的。