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How can use variable name as column in SQL?
Use Variable as SQL column Name in query
- DECLARE @ColumnName VARCHAR(100)
- set @ColumnName= ‘Date Received ‘+ GETDATE()
- SELECT Datecolumn as @ColumnName.
- SET @sqlquery = N’SELECT DISTINCT (‘ + QUOTENAME(@COLUMNNAME) + ‘) FROM TABLE1’
Can you name a column name in SQL?
SQL aliases are used to give a table, or a column in a table, a temporary name. Aliases are often used to make column names more readable. An alias only exists for the duration of that query. An alias is created with the AS keyword.
Can a table name be a variable in SQL Server?
Must declare the table variable “@tablename”.
Can we declare variable in view SQL?
You can’t declare variables in a view. Could you make it into a function or stored procedure? Edit – you might also be able to put something into a CTE (Common Table Expression) and keep it as a view.
What is a table variable?
Definition. The table variable is a special type of the local variable that helps to store data temporarily, similar to the temp table in SQL Server. In fact, the table variable provides all the properties of the local variable, but the local variables have some limitations, unlike temp or regular tables.
How do you SELECT a variable in SQL?
SELECT @local_variable is typically used to return a single value into the variable. However, when expression is the name of a column, it can return multiple values. If the SELECT statement returns more than one value, the variable is assigned the last value that is returned.
How do I set a variable in SQL?
Variables in SQL Data Warehouse are set using the DECLARE statement or the SET statement. Initializing variables with DECLARE is one of the most flexible ways to set a variable value in SQL Data Warehouse. DECLARE @v int = 0 ; You can also use DECLARE to set more than one variable at a time.
How do you declare a table variable in SQL?
How to declare table variables. To declare a table variable, you use the DECLARE statement as follows: ); In this syntax, you specify the name of the table variable between the DECLARE and TABLE keywords. The name of the table variables must start with a hash symbol (#).
What is a local variable in SQL?
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How do you rename field in SQL?
Find the field that you would like to rename (again “dob”) and right click it. Select “Rename Field”. Type in the new field name (“date_of_birth”) and hit “Enter”. Select “All documents in collection” from the dropdown box. Click “Rename”.