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You can't use a table name for a variable. You'd have to do this instead: DECLARE @sqlCommand varchar(1000) SET @sqlCommand = 'SELECT * from yourtable' EXEC (@sqlCommand)
19 sie 2020 · SQL Server provides multiple global variables, which are very effective to use in Transact-SQL. The following are some frequently used global variables – @@SERVERNAME
8 lip 2024 · Set a value in a Transact-SQL variable. When a variable is first declared, its value is set to NULL. To assign a value to a variable, use the SET statement. This is the preferred method of assigning a value to a variable. A variable can also have a value assigned by being referenced in the select list of a SELECT statement.
All global variables start with @@; all normal variables start with @. The most useful global variables are the following: Holds the id number of the last record added. I've covered the use of this in a separate blog (which explains that SCOPE_IDENTITY () is often a better alternative).
Use the SHOW GLOBAL VARIABLES LIKE variable_name or SELECT @@variable_name to display the current value of the variable_name; Use the SET GLOBAL variable_name = value to set a new value for the variable_name.
21 lip 2018 · SELECT * FROM [dbo].[my_target_table] WHERE [foo] = CONVERT([int], CONVERT(XML, 'AAAAAQ==').value('xs:base64Binary(.)', 'VARBINARY(MAX)')) AND [bar] > CONVERT([int], CONVERT(XML, 'AAAABA==').value('xs:base64Binary(.)', 'VARBINARY(MAX)')) AND [baz] < CONVERT([datetime], CONVERT(XML, 'AACaZAAAAAA=').value('xs:base64Binary(.)', 'VARBINARY(MAX ...
5 gru 2016 · One option to do this is with PL/SQL-Package Variables: create or replace package steptest as procedure set(a number); function get return number; end; / create or replace package body steptest as x number; procedure set(a number) is begin x:=a; end; function get return number is begin return x; end; begin x:=0; end; /
