Let’s show a practical example of the usage of stored procedures in SQL. 3.1. Practical Example For this demonstration, let’s create a stored procedure that updates the GPA of students in theStudenttable based on their performance in a specific exam: ...
过程和函数的区别:过程函数使用关键字procedure声明使用关键字function进行声明都可以使用IN/OUT/IN-OUT格式的参数在定义的时候,不需要进行return(返回值)需要指定使用return定返回值的类型都可以由声明、执行、异常处理三个部分组成可以作为独立的PL/SQL语句单独执行
DELIMITER$CREATEPROCEDURE存储过程名(IN|OUT|INOUT参数名参数类型,...)[characteristics...]BEGINsql语句1;sql语句2;END$ 代码举例 举例1:创建存储过程select_all_data(),查看 emps 表的所有数据 DELIMITER$CREATEPROCEDUREselect_all_data()BEGINSELECT*FROMemps;END$DELIMITER; 举例2:创建存储过程avg_employee_salar...
今天简单总结一下SQL中PROCEDUR,TRIGGER,FUNCTION的简单应用。 一.简单PROCEDURE 1.不带参数 create proc PROC_Test as select 字段名 from 表名 2.带输入,输出参数 create proc PROC_TESTParamer @ID varchar(16), @username varchar(20) output as select @username = USERNAME FROM 表名 where ID = @ID ...
CREATE OR REPLACE FUNCTION SF_PUB_STRMINUSINT (p_beg in varchar2, p_end in varchar2 ) return int /** AUTH FUNC 两个随机号相减得数 **/ AS v_ret int; vs_geb varchar2(30); vs_str varchar2(30); vn_beg int; vs_dne varchar2(30); vn_end int; begin --反转 select reverse(p_...
To replace a stored procedure Use an inline function as a filter predicate for a security policy The integration of .NET Framework CLR into SQL Server is discussed in this article. CLR integration doesn't apply to Azure SQL Database. For Azure Synapse Analytics or Microsoft Fabric, see CREATE...
SQLProcedureColumns returns the results as a standard result set, ordered by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME, and COLUMN_TYPE. Column names are returned for each procedure in the following order: the name of the return value, the names of each parameter in the procedure invocation...
摘要 SQLProcedureColumns 返回输入和输出参数的列表,以及构成指定过程的结果集的列。 驱动程序以指定语句上的结果集的形式返回信息。语法C++ 复制 SQLRETURN SQLProcedureColumns( SQLHSTMT StatementHandle, SQLCHAR * CatalogName, SQLSMALLINT NameLength1, SQLCHAR * SchemaName, SQLSMALL...
SqlRoleAssignmentCreateUpdateParameters SqlRoleAssignmentListResult SqlRoleDefinitionCreateUpdateParameters SqlRoleDefinitionListResult SqlStoredProcedureCreateUpdateParameters SqlStoredProcedureGetPropertiesResource SqlStoredProcedureListResult SqlStoredProcedureResource SqlTriggerCreateUpdateParameters SqlTriggerGetPr...
TheInputOutputTypeargument specifies the type of the parameter. This argument sets the SQL_DESC_PARAMETER_TYPE field of the IPD. All parameters in SQL statements that do not call procedures, such asINSERTstatements, areinputparameters. Parameters in procedure calls can be input, input/output, or...