Wednesday, October 28, 2009

Insert Query Generator -- Give name of table as paramter and will generate insert quey

set ANSI_NULLS ON
set QUOTED_IDENTIFIER OFF
GO

CREATE PROC [dbo].[InsertGenerator]
(@tableName varchar(100))
as
--Declare a cursor to retrieve column specific information for the specified table
DECLARE cursCol CURSOR FAST_FORWARD FOR
SELECT column_name,data_type FROM information_schema.columns WHERE table_name = @tableName
OPEN cursCol
DECLARE @string nvarchar(3000) --for storing the first half of INSERT statement
DECLARE @stringData nvarchar(max) --for storing the data (VALUES) related statement
DECLARE @dataType nvarchar(1000) --data types returned for respective columns
SET @string='INSERT '+@tableName+'('
SET @stringData=''
DECLARE @colName nvarchar(50)
FETCH NEXT FROM cursCol INTO @colName,@dataType
IF @@fetch_status<>0 begin
print 'Table '+@tableName+' not found, processing skipped.'
close curscol
deallocate curscol
return
END
WHILE @@FETCH_STATUS=0
BEGIN
IF @dataType in ('varchar','char','nchar','nvarchar')BEGIN
--SET @stringData=@stringData+'''''''''+isnull('+@colName+','''')+'''''',''+'
SET @stringData=@stringData+''''+'''+isnull('''''+'''''+replace(' +@colName+','''''''','''''''''''')+'''''+''''',''NULL'')+'',''+'
print @stringData
END
ELSE
if @dataType in ('text','ntext') --if the datatype is text or something else
BEGIN
SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(2000)),'''')+'''''',''+'
END
ELSE
IF @dataType = 'money' --because money doesn't get converted from varchar implicitly
BEGIN SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'
END
ELSE IF @dataType='datetime'BEGIN
--SET @stringData=@stringData+'''convert(datetime,''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+''''''),''+' --SELECT 'INSERT Authorizations(StatusDate) VALUES('+'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations --SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'
SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+' -- 'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations
END
ELSE IF @dataType='image' BEGIN
SET @stringData=@stringData+'''''''''+isnull(cast(convert(varbinary,'+@colName+') as varchar(6)),''0'')+'''''',''+'
END
ELSE --presuming the data type is int,bit,numeric,decimal
BEGIN --SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+'''''',''+' --SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+'
SET @stringData=@stringData+''''+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+')+'''''+''''',''NULL'')+'',''+'
END
SET @string=@string+@colName+','FETCH NEXT FROM cursCol INTO @colName,@dataType
END
DECLARE @Query nvarchar(Max)
PRINT substring(@stringData,0,len(@stringData)-2)
print substring(@string,0,len(@string))
SET @query ='SELECT '''+substring(@string,0,len(@string)) + ') VALUES(''+ ' + substring(@stringData,0,len(@stringData)-2) +'''+'')'' FROM '+@tableName
exec sp_executesql @query--select @query
PRINT @query
CLOSE cursCol
DEALLOCATE cursCol