之前经常在程序中拼接sql语句，其实我们也可以在存储过程中拼接sql 语句，动态的执行~~

代码如下：

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";

#拼接医生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;

#拼接开始结束日期

IF beginDate<>'' AND endDate <>'' THEN

SET cal1=CONCAT(cal1," ","AND OPER_AT BETWEEN ","'",beginDate,"'"," AND ","'",endDate,"'");

END IF;

#拼接标准科室

IF StandDeptId<>'' THEN

SET cal1=CONCAT(cal1," ","AND DEPT_ID IN ( SELECT ID FROM department WHERE STAND_DEPT_ID = ","'",StandDeptId,"'",")");

END IF;

#拼接数据来源

IF OperationFlag <>'' THEN

SET cal1=CONCAT(cal1," ","AND OPEPARTKINDID IN (SELECT ID FROM zh_ssczfl WHERE FLAG= ","'",OperationFlag,"'",")");

END IF;

#拼接手术操作类别

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;

涉及到的具体的业务逻辑就不介绍了，语法方面还是可以参照下的。

示例：有如下创建索引的存储过程

--procedure create_index

create or replace procedure create_index(indexName in varchar2, tableName in varchar2, columnName in varchar2)

is

tmp_name VARCHAR2(50);

TMP_SQL VARCHAR2(1024);

cnt NUMBER;

begin

select table_name into tmp_name from user_tables where upper(table_name)=upper(tableName);

if length(tmp_name)>0 then

SELECT COUNT(*) INTO cnt FROM USER_INDEXES T WHERE T.TABLE_NAME=''|| tableName ||'' AND T.INDEX_NAME=''|| indexName;

IF cnt = 0 THEN

execute immediate 'create index ' || indexName ||' on ' || tableName ||'('|| columnName ||') TABLESPACE TBS_TXNIDX';

END IF;

end if;

EXCEPTION

WHEN NO_DATA_FOUND THEN

BEGIN

NULL;

END;

end;

/

1)在命令窗口下: exec 存储过程(参数...);

exec create_index('IDX_ORG_SET_PROCESS_1','CPS_ORG_SETTLEMENT_PROCESS','ORG_IDENTITY_ID ASC');

2)在sql窗口下:

begin

create_index('IDX_STATEMENT_DETAIL_LINK','CPS_BANK_STATEMENT_DETAIL','LINK_TXN_ID ASC');

end;