CreateProcedureProcedure-name ( Input parameters , Output Parameters (Ifrequired)) As Begin Sql statement usedinthe stored procedure End 在这里我们利用一个普通的例子来说明: /*Getstudentname is the name of the stored procedure*/
IF <Boolean Expression> <SQL statement> | BEGIN END [ELSE <SQL statement> | BEGIN END] 其中的表达式可以是取布尔值的任意表达式。 提示: 不恰当的使用NULL值是个常见的陷阱。例如经常会有如下错误出现: IF @MyVar = NULL 在大多数系统上(遵循ANSI标准)这样的表达式永远都不会为真,并且为绕过所有的NU...
IF 语句可以基于条件选择性执行操作, PL/pgSQL 提供了三种形式的 IF 语句。 IF ... THEN ... END IF IF ... THEN ... ELSE ... END IF IF ... THEN ... ELSIF ... THEN ... ELSE ... END IF 首先,最简单的 IF 语句如下: IFboolean-expressionTHENstatementsENDIF; 如果表达式 boolean-expre...
Transact-SQL syntax for stored procedures in Azure Synapse Analytics and Parallel Data Warehouse: syntaxsql Copy CREATE { PROC | PROCEDURE } [ schema_name.] procedure_name [ { @parameter data_type } [ OUT | OUTPUT ] ] [ ,...n ] AS { [ BEGIN ] sql_statement [;][ ,...n ] [...
The authorization ID that is used to create the stored procedure must have authority to create programs that are to be run in the specified WLM environment. The owner of the procedure is determined by how the CREATE PROCEDURE statement is invoked: If the statement is embedded in a prog...
FORMATkeyword defines an error message that we want to display. If the message contains some variable value then we use the%symbol This syntax offers some advantages i.e. – Helps to raise the statement for reporting the warning Offers to raise exceptions in various parameters ...
[characteristic...]routine_bodyproc_parameter:[IN|OUT|INOUT]param_name typecharacteristic:COMMENT'string'|LANGUAGESQL|[NOT]DETERMINISTIC|{CONTAINSSQL|NOSQL|READSSQLDATA|MODIFIESSQLDATA}|SQLSECURITY{DEFINER|INVOKER}routine_body:ValidSQLroutine statement[begin_label:]BEGIN[statement_list]……END[end_label...
There are multiple ways to provide parameters and values in stored procedure EXECUTE statements. The following examples show several different options for the EXECUTE statement. If you provide the parameter values in the same order as they're defined in the stored procedure, you don't need to st...
If there are multiple parameterized statements in the batch, all parameters must match in type and order. Only one statement can return a result, and it must be the first statement. If the batch returns a result, then the columns must match the same number and properly named result columns...
SQL_MAX_PROCEDURE_NAME_LEN SQL_MAX_ROW_SIZE SQL_MAX_ROW_SIZE_INCLUDES_LONG SQL_MAX_SCHEMA_NAME_LEN SQL_MAX_STATEMENT_LEN SQL_MAX_TABLE_NAME_LEN SQL_MAX_TABLES_IN_SELECT SQL_MAX_USER_NAME_LEN 标量函数信息 InfoType 参数的以下值返回有关数据源和驱动程序支持的标量函数的信息。 有关标量函数的...