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2009-09-11

How-to generate insert statements from a table name



alter PROCEDURE [dbo].[procUtils_GenerateMetaInsert]      
@TableName varchar(50)      
AS      
BEGIN -- proc start                                  
SET NOCOUNT ON;                                  
BEGIN TRY        --begin try                        
--CODE SNIPPET TO LIST TABLE COLUMNS       
-- RUN IN SSMS WITH cTRL + t FIRST TO OUTPUT THE RESULT TO TEXT FOR COPY PASTE      
--FIRST SEARCH THE TABLE WHICH HAD A "Feature" in its name       
--SELECT NAME FROM SYS.TABLES WHERE NAME LIKE '%Feature%'      
--select column_name from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='Feature'          
--Declare the Table variable           
DECLARE @ColNames TABLE          
(          
Number INT IDENTITY(1,1), --Auto incrementing Identity column          
ColName VARCHAR(300) , --The string value          
DataType varchar(50) --the datatype 
)          
--Decalre a variable to remember the position of the current delimiter          
DECLARE @CurrentDelimiterPositionVar INT           
--Decalre a variable to remember the number of rows in the table          
DECLARE @Count INT          
--Populate the TABLE variable using some logic          
INSERT INTO @ColNames SELECT column_name , Data_type from INFORMATION_SCHEMA.COLUMNS       
where TABLE_NAME=@TableName          
--Initialize the looper variable          
SET @CurrentDelimiterPositionVar = 1          
--Determine the number of rows in the Table          
SELECT @Count=max(Number) from @ColNames          
--A variable to hold the currently selected value from the table          
DECLARE @ColumnName varchar(300);          
DECLARE @DataType varchar(50)
print 'INSERT INTO ' + @TableName + '( '          
--Loop through until all row processing is done          
WHILE @CurrentDelimiterPositionVar <= @Count          
BEGIN          
--Load current value from the Table          
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar  
--Process the current value          
if @CurrentDelimiterPositionVar = @Count          
print '[' + @ColumnName + '] --type of ' + @DataType -- this is the last row no comma!      
else       
print '[' + @ColumnName + '], --type of '  + @DataType -- print it without the ,      
-- print 'obj1.' + @ColumnName+ ' = obj2.'+ @ColumnName      
-- print @ColumnName    --SIMPLE PRINT      
--Increment loop counter          
SET @CurrentDelimiterPositionVar = @CurrentDelimiterPositionVar + 1;          
END          
print ') VALUES ( '          
--AND START ALL OVER AGAIN     
SET @CurrentDelimiterPositionVar = 1
--Loop through until all row processing is done          
WHILE @CurrentDelimiterPositionVar <= @Count          
BEGIN          
--Load current value from the Table          
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar  
 
--Process the current value          
if @CurrentDelimiterPositionVar = @Count          
print ''''' --[' + @ColumnName + '] type of ' + @DataType -- this is the last row no comma!      
else       
print ''''' , --[' + @ColumnName + '] type of ' + @DataType  -- print it without the ,      
-- print 'obj1.' + @ColumnName+ ' = obj2.'+ @ColumnName      
-- print @ColumnName    --SIMPLE PRINT      
--Increment loop counter          
SET @CurrentDelimiterPositionVar = @CurrentDelimiterPositionVar + 1;          
END          
set nocount off       
PRINT ')'      
END TRY        --end try                        
BEGIN CATCH                              
print ' Error number: ' + CAST(ERROR_NUMBER() AS varchar(100)) +                     
'Error message: ' + ERROR_MESSAGE() + 'Error severity: ' +       
CAST(ERROR_SEVERITY() AS varchar(10)) +                     
'Error state: ' + CAST(ERROR_STATE() AS varchar(100)) +       
'XACT_STATE: ' + CAST(XACT_STATE() AS varchar(100))                              
END CATCH                              
END --procedure end                                   
/*       
USE [GenApp]      
GO      
EXEC    [dbo].[procUtils_GenerateMetaInsert] @TableName = N'Msg'
GO      
*/ 

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