How to exclude one column from result? [duplicate] - sql

Question

This question already has answers here:
Exclude a column using SELECT * [except columnA] FROM tableA?
(47 answers)
Closed 7 years ago.
I have a table with columns
a,b,c,d,e,f,g,...,z
Is it possible to write a simple query that will gives all columns except a without manualy specifing all other columns?
something that will be equivelant to:
Select b,c,d,e,f,g,h,...z
from TableG

Answer 1

To answer your question, you cannot do that directly, HOWEVER i found a solution for you.
The SELECT statement of SQL when using Physical table can only do SELECT * that will return all columns and SELECT Column1, Column2, Column3... for specific columns, there is no WHERE condition that will exclude 1 column name in the SELECT statement of SQL. How ever you can manipulate the table and the data the way you wanted it using temporary table
Solution:
Insert into temp table
Drop the column that you want to exclude from the temp table
Select all data from temp table.
SELECT * INTO #TempTable
FROM TableG
ALTER TABLE #TempTable
DROP COLUMN a
SELECT * FROM #TempTable
DROP TABLE #TempTable
I found the solution here: SQL exclude a column using SELECT * [except columnA] FROM tableA?

Answer 2

/************************************************************
Function To Split Strings
************************************************************/
SET QUOTED_IDENTIFIER ON
GO
IF OBJECT_ID('dbo.SplitString') IS NOT NULL
BEGIN
DROP FUNCTION dbo.SplitString
END
GO
create function [dbo].[SplitString]
(
#String varchar(max),
#Delimiter char(1)
)
returns #SplittedValues table
(
str_item varchar(100) primary key
)
as
begin
declare #SplitLength int
while len(#String) > 0
begin
select #SplitLength = (case charindex(#Delimiter,#String) when 0 then
len(#String) else charindex(#Delimiter,#String) -1 end)
insert into #SplittedValues
select substring(#String,1,#SplitLength)
select #String = (case (len(#String) - #SplitLength) when 0 then ''
else right(#String, len(#String) - #SplitLength - 1) end)
end
return
end
GO
/************************************************************
Function To Get columns names excluding some of them
************************************************************/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF OBJECT_ID('dbo.get_columns') IS NOT NULL
BEGIN
DROP FUNCTION dbo.get_columns
END
GO
CREATE FUNCTION dbo.get_columns
(
#table_name varchar(100),
#excluded_column_names varchar(100),
#delimter char(1)
)
RETURNS varchar(4000)
AS
BEGIN
declare #cols varchar(4000)
select #cols = COALESCE(#cols+',' ,'') + name
from sys.columns
where object_id=object_id(#table_name)
and name not in (select str_item from dbo.SplitString(#excluded_column_names,#delimter))
return #cols
END
GO
/************************************************************
Function To Get columns names excluding some of them
************************************************************/
declare #qry nvarchar(max)
set #qry = ' select ' + dbo.get_columns('TableName','Exclude_col_1,Exclude_col_2,Exclude_col_3',',')
+ ' from TableName'
+ ' where condition'
EXECUTE sp_executesql #qry
GO