mysql存储过程拼sql

㈠ mysql存储过程动态拼接sql时能用函数吗

能在详细点吗，没看明白，拼接过程中可以用mysql以外的函数，拼接成后 只能用mysql函数了

㈡ mysql存储过程能不能直接执行拼接的sql语句

当然可以，就是在mysql存储过程中使用动态sql，就可以拼接sql，然后执行了。

给你复制一段，如果不满意，自己搜索 mysql存储过程动态sql就可以了

;
CREATEPROCEDURESearchByDoctor(
INDoctorIdVARCHAR(50),
INdeptIdVARCHAR(50),
INbeginDateVARCHAR(20),
INendDateVARCHAR(20),
INStandDeptIdVARCHAR(50),
INOperationFlagVARCHAR(50),
INSsczflIdVARCHAR(50),
OUTOperNumINT,
OUTAvgDangerIndexDOUBLE,
OUTOperGrCaseINT
)
BEGIN
	DECLAREcal1VARCHAR(800);
DECLAREcal2VARCHAR(800);

	SETcal1="SELECTCOUNT(1),AVG(DANGER_INDEX)INTO@para1,@para2FROMyw_ssxxbWHERE1=1";
SETcal2="SELECTCOUNT(1)INTO@para3FROMgr_grbwWHEREOPE_RELIDIN(SELECTRELIDFROMyw_ssxxbWHERE1=1";
#拼接医生id
SETcal1=CONCAT(cal1,"","ANDOPEDOC_ID=","'",DoctorId,"'");
SETcal2=CONCAT(cal2,"","ANDOPEDOC_ID=","'",DoctorId,"'");

#拼接科室id
	IFdeptId<>''THEN
	SETcal1=CONCAT(cal1,"ANDDEPT_ID=","'",deptId,"'");
ENDIF;
#拼接开始结束日期
IFbeginDate<>''ANDendDate<>''THEN
SETcal1=CONCAT(cal1,"","ANDOPER_ATBETWEEN","'",beginDate,"'","AND","'",endDate,"'");
ENDIF;

#拼接标准科室
IFStandDeptId<>''THEN
SETcal1=CONCAT(cal1,"","ANDDEPT_IDIN(_DEPT_ID=","'",StandDeptId,"'",")");
ENDIF;
#拼接数据来源
IFOperationFlag<>''THEN
SETcal1=CONCAT(cal1,"","ANDOPEPARTKINDIDIN(SELECTIDFROMzh_ssczflWHEREFLAG=","'",OperationFlag,"'",")");
ENDIF;
#拼接手术操作类别
IFSsczflId<>''THEN
SETcal1=CONCAT(cal1,"","ANDOPEPARTKINDID=","'",SsczflId,"'");
ENDIF;
SETcal2=CONCAT(cal2,")");
	SET@sql1=cal1;
SET@sql2=cal2;
	PREPAREstmt1FROM@sql1;
	EXECUTEstmt1;
	DEALLOCATEPREPAREstmt1;
PREPAREstmt2FROM@sql2;
	EXECUTEstmt2;
	DEALLOCATEPREPAREstmt2;
SETOperNum=@para1;
SETAvgDangerIndex=@para2;
SETOperGrCase=@para3;
END;

㈢ mysql存储过程一个参数有多个逗号分割

这个应该可以使用字符串拼接，你是不是这样写存储过程： create procere p_proc(var_in int) begin delete from [tableName] where [colName] in (var_in); end 然后又这样调用： call p_proc(1, 2, 3); 这样肯定不行，那么你可以这样：

㈣ mysql使用存储过程将多条（4条以上）SQL使用 union all 合并

BEGIN
declaresel_sqlVARCHAR(100);
declareg_sqlVARCHAR(100);
declareu_sqlVARCHAR(100);
declaret_nameVARCHAR(100);
DECLAREdoneINTDEFAULTFALSE;
declaremonth__monthwhereflag=1;
=true;
setsel_sql='(selectsum(fee+fee2+fee3)Asfee,monthfromfee_detail_';/*左括号*/
setg_sql='groupbymonth)';/*右括号*/
setu_sql='unionall';/*加空格、上同*/
OPENmonth_cursor;
my_loop:loop
FETCHmonth_cursorintot_name;
ifdonethen
leavemy_loop;
endif;
ifs_sqlisnullthen
set@s_sql=CONCAT(sel_sql,t_name,g_sql);/*第一个SQL*/
else
set@s_sql=CONCAT(s_sql,u_sql,sel_sql,t_name,g_sql);/*开始Union后续SQL*/
endif;
endloop;
/*最后执行一次拼接后的SQL语句*/
PREPAREpre_s_sqlfrom@s_sql;
EXECUTEpre_s_sql;
deallocatepreparepre_s_sql;
closemonth_cursor;
END

思路修正，貌似还有不少语法问题，自行修复。

㈤ mysql存储过程求大神(拼接字符串)

DROPPROCEDUREIFEXISTS`p_create_view`

CREATEPROCEDUREp_create_view()
BEGIN
DECLAREtableNameVARCHAR(100);
DECLAREstopFlagINT;
DECLAREsql1VARCHAR(1000);
DECLAREcursor_nameCURSORFORSELECTTABLE_NAMEFROMinformation_schema.tablesWHERETABLE_NAMELIKE'test_2014%';
'02000'SETstopFlag=1;
SET@sql1='createviewtestasselectid,namefrom';
OPENcursor_name;
REPEAT
FETCHcursor_nameINTOtableName;
SELECTCONCAT(@sql1,tableName,'UNIONALLSELECTid,nameFROM')INTO@sql1FROMDUAL;
UNTILstopFlagENDREPEAT;
CLOSEcursor_name;
SELECTSUBSTR(@sql1,1,LENGTH(@sql1)-31)INTO@sql1FROMDUAL;
PREPAREstepFROM@sql1;
EXECUTEstep;
END;

㈥ mysql存储过程中调用Prepare返回值

事实上MySQL还不支持从动态sql中返回结果，既不能用PrepareStatement来声明游标，游标只能用嵌入式SQL来声明。
所以你要实现这个功能就要考虑其它的办法，给你一个建议就是创建一个临时表（Create temporary TableName）,将你查询出的结果存放的这个临时表里，然后你可以对这张临时表进行操作。但是也很复杂的！！！~

㈦ mysql存储过程能不能直接执行拼接的sql语句

prepare statement_name from 'sql_text'
execute statement_name using [ variable1,variable2]
deallocate prepare statement_name

㈧ laravel 怎么调用mysql存储过程

laravel并没有提供直接调用存储过程的实现,只能通过拼sql的方式调用存储过程,比如:

DB::statement('call存储过程名称(参数)');

或者

DB::select('call存储过程名称(参数)');

㈨ mysql 存储过程 数据库表名字段作为参数传递给存储过程的方法

直接将数据库表名字段作为字符类型传到存储过程中，存储过程拼接sql语句，再用exec执行。例如：
CREATE PROCEDURE [proc_test]
(@tablename varchar(100))
WITH
EXECUTE AS CALLER
AS
declare @sql varchar(1000);
set @sql='select * from '+@tablename
exec(@sql)
GO

再直接执行 exec proc_test '学生表'