i can't get result for this query 'select @column_name from @table_name'

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SSRS-2008

Hi,
here

SQL

select name from sys.tables

-- here i got all tables presented in particular database

SQL

select column_name from informationschema.columns

--here i got all columns presented in particular database

by the same way i need to get all data values while selecting the particular column .

my drill through should be-- table name --> column name --> column fields

i can't get result for this query 'select @column_name from @table_name'

Posted 21-Sep-15 1:13am

G Senthil Kumar

Updated 21-Sep-15 4:20am

Naveen.Sanagasetti

v2

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Solution 2

ya it is worked in sql that already i have but it is not working with ssrs drill through
kindly help me out in SSRS

Posted 21-Sep-15 3:02am

G Senthil Kumar

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Naveen.Sanagasetti 21-Sep-15 10:23am

In SSRS, which database are you using. If that is SQL then it should work in SSRS too. If it is not working means, please check the query which you have passed.

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OriginalGriff · Accepted Answer · 2015-09-21T02:00:00

If you are trying to return the names of the columns, then try:

SQL

SELECT column_name FROM information_schema.columns WHERE table_name = 'MyTable'

If you are trying to pass a column name into an SQL SELECT command as a variable, then you can do it directly if the table name is fixed:

SQL

DECLARE @COL NVARCHAR(MAX)
SET @COL = 'ColumnName'
SELECT @COL FROM MyTable

If you want the table to be in a variable as well, you need to EXEC it:

SQL

DECLARE @COL NVARCHAR(MAX)
SET @COL = 'ColumnName'
DECLARE @TAB NVARCHAR(MAX)
SET @TAB = 'MyTable'
DECLARE @COMMAND NVARCHAR(MAX)
SET @COMMAND = 'SELECT ' + @COL + ' FROM ' + @TAB
EXEC(@COMMAND)