How do you assign a table name to a variable in SQL?
You can create a variable @TablenameList to hold the names of the tables you want to process:
- DECLARE @TablenameList varchar(1000);
- SET @TablenameList = ‘Table1, Table2.’;
Can you use a variable as a table name in SQL?
Syntax. If we want to declare a table variable, we have to start the DECLARE statement which is similar to local variables. The name of the local variable must start with at(@) sign. The TABLE keyword specifies that this variable is a table variable.
How do I run a dynamic query in SQL Server?
First, declare two variables, @table for holding the name of the table from which you want to query and @sql for holding the dynamic SQL. Second, set the value of the @table variable to production. products . Fourth, call the sp_executesql stored procedure by passing the @sql parameter.
What are bind variables in SQL?
Bind variables are variables you create in SQL*Plus and then reference in PL/SQL. If you create a bind variable in SQL*Plus, you can use the variable as you would a declared variable in your PL/SQL subprogram and then access the variable from SQL*Plus.
Do you declare the table name as a variable in SQL?
Must declare the table variable “@tablename”. What’s the right way to have the table name populated dynamically? For static queries, like the one in your question, table names and column names need to be static. For dynamic queries, you should generate the full SQL dynamically, and use sp_executesql to execute it.
Can a table variable be declared in dynamic SQL?
You can’t do this because the table variables are out of scope. You would have to declare the table variable inside the dynamic SQL statement or create temporary tables. I would suggest you read this excellent article on dynamic SQL.
How to do a dynamic query in SQL?
For dynamic queries, you should generate the full SQL dynamically, and use sp_executesql to execute it. Here is an example of a script used to compare data between the same tables of different databases: SELECT * FROM [DB_ONE]. [dbo]. [ACTY] EXCEPT SELECT * FROM [DB_TWO]. [dbo]. [ACTY]
Can a table name be parametrisable in SQL?
@AmanSanganeria: Table names are not parametrisable in T-SQL. Dynamic SQL (shown in Mark’s answer) is the only way to go when you want to make table names dynamic. From your description, however, it’s not entirely clear why you have to use a different table every few days.
