How to concatenate all columns in a select with SQL Server

Question

I need my select to have a pattern like this:

 SELECT \' \' + tbl.* + \' \' FROM table tbl;

The ideal solution wo

Answer 1

I tried a more generic approach

Create Procedure P_GetConcatColumns(@tablename varchar(200),@Seperator Varchar(20),@StartTag Varchar(20),@EndTag Varchar(20),@WhereString Varchar(400),@OrderString Varchar(400)) as


DECLARE @TmpTableName VARCHAR(100),
        @Columns NVARCHAR(4000),
        @SQL NVARCHAR(MAX),
        @GENNAME VARCHAR(100)

Select  @GENNAME='##'+Replace(Cast(NewID() as Varchar(40)),'-','')

IF OBJECT_ID('tempdb.dbo.' + @GENNAME) IS NOT NULL
BEGIN
    EXEC('DROP TABLE ' +@GENNAME);
END




Select @SQL='SELECT TOP 1 * INTO '+@GENNAME+' FROM ' + @tablename
Exec (@SQL)



SET @TmpTableName = 'tempdb.dbo.' + @GENNAME
SELECT @Columns = 
    STUFF(
    (
    SELECT '+' + @Seperator + '+CAST(Coalesce(' + c.name + ','''') AS VARCHAR(MAX))' + CHAR(13)
    FROM tempdb.sys.columns c
    WHERE c.[object_id] = object_Id(@TmpTableName)
    FOR XML PATH(''),TYPE
    ).value('.','VARCHAR(MAX)')
    ,1,len(@Seperator)+2,'')

--SET @SQL = N'SELECT ' +''''+ @StartTag +''''+'+'+ @Columns +''''+'+'+ @EndTag + ''' FROM ' + @tablename 
SET @SQL = N'SELECT ''' +@StartTag+ '''+'+ @Columns +'+'''+ @EndTag + ''' FROM ' + @tablename 
+' '+Coalesce(@WhereString,'')
+' '+Coalesce(@OrderString,'')
Print @SQL
EXEC sp_executeSQL @SQL


--ExampleCall P_GetConcatColumns 'Arten',''',''','','','where id>1','Order by ID desc'