Another way to use %ROWTYPE in PostgreSQL variables is using RECORD as the data type of a variable. Below is the same example as above, but displaying “emp” table data using RECORD type. postgres=#CREATEPROCEDUREexample4 ()AS$$ postgres$#DECLAREpostgres$# eid_var emp.eid%TYPE;postgres$...
DECLARE [ OR REPLACE ] [ VARIABLE ] variable_name [ data_type ] [ { DEFAULT | = } default_expression ] Parameters OR REPLACE 如果已指定,将替换同名的变量。 variable_name 变量的名称。 该名称可以使用session或system.session进行限定。 除非指定了OR REPLACE,否则该名称在会话中必须是唯一的。
-- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; DECLARE @CustCoden varchar(50) BEGIN TRY DECLARE HCodeCursor Cursor FAST_FORWARD for Select CustCode FROM CustomerInfo WHERE @Param = @ParamValue AND Location= @Location Open H...
用declare声明的变量作用在block中。 variable是sqlplus中定义变量的命令。他定义的变量在一个sqlplus连接中有效。 SQL> show user USER 为"YANGTK" SQL> var SP2-0568: 未说明结合变量。 SQL> var test number SQL> var 变量test 数据类型 NUMBER SQL> conn / as sysdba 已连接。 SQL> show user USER 为"...
-- Declare variable. -- Note that the buffer here is only 200 characters long. DECLARE@commandvarchar(200) -- Construct the dynamic Transact-SQL. -- In the following statement, we need a total of 154 characters -- to set the password of 'sa'. ...
Write a PL/SQL block to learn how to declare a character type variable. Sample Solution: PL/SQL Code: DECLAREc VARCHAR2(8CHAR);BEGINc :='abc ';END;/ Copy or can also be declare like this- DECLAREc VARCHAR2(8);BEGINc :='abc ';END;/ ...
DECLARE{ { @local_variable[AS]data_type} [ = value [COLLATE<collation_name>] ] } [ ,...n ] 参数 @local_variable 变量的名称。 变量名必须以 at 符 (@) 开头。 局部变量名称必须符合标识符规则。 data_type 任何系统提供的公共语言运行时 (CLR) 用户定义表类型或别名数据类型。 变量的数据类型不...
C# 复制 public System.Collections.Generic.IList<Microsoft.SqlServer.TransactSql.ScriptDom.DeclareVariableElement> Declarations { get; } Property Value IList<DeclareVariableElement> Applies to 产品版本 Microsoft.SQLServer.DacFx 140.3881.1, 150.18208.0,...
Can be referenced as the target of an output cursor parameter in an EXECUTE statement if the cursor variable doesn't have a cursor currently assigned to it. Should be regarded as a pointer to the cursor. Examples A. Using DECLARE The following example uses a local variable named@findto retr...
Can be referenced as the target of an output cursor parameter in an EXECUTE statement if the cursor variable doesn't have a cursor currently assigned to it. Should be regarded as a pointer to the cursor. Examples A. Using DECLARE The following example uses a local variable named@findto retr...