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2009-11-27

Generic way of creation history tables in tsql with triggers on update , insert , delete



 
---
CREATE PROCEDURE [dbo].[procUtils_GenerateHistoryTable]            
@TableName [varchar](200)            
WITH EXECUTE AS CALLER            
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                           
IsNullable varchar(3),  -- whether or not this table col is nullable            
MaxLength int --the CHARACTER_MAXIMUM_LENGTH        
)                                    
--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               
DECLARE @sqlTxtToPrint varchar(max)            
DECLARE @nowNiceTime varchar(400)        
set @nowNiceTime = dbo.funcGetNiceTime()         
--select * from sys.objects where object_name(object_id) like '%func%'        
SET @sqlTxtToPrint = ' USE Gaf             
GO'            
--PRINT THE SQL TO         
SET @sqlTxtToPrint = @sqlTxtToPrint +         
'  
USE [Gaf]  
GO  
/****** Object:  Table ' + @TableName + 'History    Script Date: ' + @nowNiceTime + ' ******/  
IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N''' + @TableName + 'History'') AND type in (N''U''))  
DROP TABLE ' + @TableName + 'History  
GO  
USE [Gaf]  
GO  
/****** Object:  Table ' + @TableName + 'History    Script Date: ' + @nowNiceTime + ' ******/  
SET ANSI_NULLS ON  
GO  
SET QUOTED_IDENTIFIER ON  
GO  
SET ANSI_PADDING ON  
GO  
'        
--Populate the TABLE variable using some logic                                    
-- SELECT *  from INFORMATION_SCHEMA.COLUMNS                     
INSERT INTO @ColNames SELECT column_name , Data_type , IS_NULLABLE , CHARACTER_MAXIMUM_LENGTH 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 @ColName varchar(300);                                    
DECLARE @DataType varchar(50)          
DECLARE @PkColName varchar(200)            
DECLARE @IsNullable varchar(3)            
DECLARE @MaxLength int         
set @sqlTxtToPrint = @sqlTxtToPrint + '                          
SET NOCOUNT ON;                          
SET XACT_ABORT ON;                          
CREATE TABLE [dbo].[' + @TableName + 'History](' + CHAR(13)                          
--Loop through until all row processing is done                            
WHILE @CurrentDelimiterPositionVar <= @Count --while 1        
BEGIN                                    
--Load current value from the Table                                    
SELECT @ColName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar              
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar             
SELECT @IsNullable = IsNullable FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar         
SELECT @MaxLength = MaxLength FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar         
--PRINT EACH COLUMN WITH , AT THE END             
if @CurrentDelimiterPositionVar = 1             
BEGIN --IF THIS IS THE FIRST COL = PK            
set @PkColName = @TableName + 'HistoryId'             
set @sqlTxtToPrint = @sqlTxtToPrint +              
'[' + @PkColName + '][int] IDENTITY(1,1) NOT NULL,' + CHAR(13)            
END --IF THIS IS THE FIRST COL = PK            
SET @sqlTxtToPrint =  @sqlTxtToPrint + '[' + @ColName + ']' + ' ['+ @DataType +  '] '              
--ADD THE (200)              
IF @MaxLength IS NOT NULL               
BEGIN --IF @CHARACTER_MAXIMUM_LENGTH IS NOT NULL               
--xml              
if @DataType != 'xml' and @DataType != 'sql_variant' and @DataType != 'text' and @DataType != 'ntext' and @DataType != 'image' and @DataType != 'hierarchyid' and @DataType != 'binary' and @DataType != 'varbinary'               
begin --those with()              
if @MaxLength != -1            
SET @sqlTxtToPrint =                
@sqlTxtToPrint + '(' + CONVERT(VARCHAR , @MaxLength ) + ')'                 
else             
SET @sqlTxtToPrint =    @sqlTxtToPrint + '(max)'                 
end --those with(200)              
else               
begin               
SET @sqlTxtToPrint =  @sqlTxtToPrint               
end                 
END --IF @CHARACTER_MAXIMUM_LENGTH IS NOT NULL               
--ADD NULL , NOT NULL DEPENDING WHETHER OR NOT THE COLUMN IS NULLABLE    
IF @IsNullable = 'YES'             
SET @sqlTxtToPrint = + @sqlTxtToPrint + ' NULL '              
else     
SET @sqlTxtToPrint = + @sqlTxtToPrint + ' NOT NULL '              
--if @CurrentDelimiterPositionVar != @Count               
SET @sqlTxtToPrint = @sqlTxtToPrint + ','              
IF @DataType != 'timestamp'              
--DEBUGGING              
--PRINT '@ColName - ' + @ColName               
--PRINT '@DataType - ' + @DataType                        
--PRINT '@IsNullable - ' + @IsNullable               
--PRINT '@CHARACTER_MAXIMUM_LENGTH - ' +  CONVERT ( VARCHAR , @CHARACTER_MAXIMUM_LENGTH )              
SET @CurrentDelimiterPositionVar = @CurrentDelimiterPositionVar + 1;                             set @sqlTxtToPrint = @sqlTxtToPrint + CHAR(13)         
END --eof while 1                          
SET @CurrentDelimiterPositionVar  = 1    
set @sqlTxtToPrint = @sqlTxtToPrint +      
'[SqlLogin] [varchar](50) NOT NULL,            
[Action] [varchar](50) NOT NULL,            
[UpdatedWhen] [datetime] NOT NULL,  
CONSTRAINT [PK_' + @TableName + 'History] PRIMARY KEY CLUSTERED 
(
[' + @PkColName + '] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
 
 
SET ANSI_PADDING ON            
'            
--NOW ADD SOME USEFULL STATEMENTS             
set @sqlTxtToPrint = @sqlTxtToPrint +              
+ ' --SELECT NAME FROM SYS.PROCEDURES WHERE NAME LIKE ''%PROC%''' + CHAR(13)                   
+ ' --SELECT NAME FROM SYS.TABLES WHERE NAME LIKE ''%TABLE%'''    + CHAR(13)                
+ ' --exec sp_HelpText procUtils_GenerateMetaInsert'        + CHAR(13)            
+ ' --exec procUtils_GenerateMetaInsert ''TABLE'''        + CHAR(13)            
--AT THE END PRINT THE RESULT             
PRINT @sqlTxtToPrint            
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 [Gaf]                                
GO                                
SELECT NAME FROM SYS.tables where name like '%Msg%'                                
EXEC [dbo].[procUtils_GenerateHistoryTable] @TableName = N'PlEditItem'                          
*/ 
 
 
---
CREATE  PROCEDURE [dbo].[procUtils_GenerateOnDeleteTrigger]    
@TableName [varchar](50)    
WITH EXECUTE AS CALLER    
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 '                    
USE [Gaf]  
GO  
/****** Object:  Trigger [trigGen_AfterDeleteOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/  
IF  EXISTS (SELECT * FROM sys.triggers WHERE object_id = OBJECT_ID(N''[dbo].[trigGen_AfterDeleteOn' + @TableName + ']''))  
DROP TRIGGER [dbo].[trigGen_AfterDeleteOn' + @TableName + ']  
GO  
USE [Gaf]  
GO  
/****** Object:  Trigger [dbo].[trigGen_AfterDeleteOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/  
SET ANSI_NULLS ON  
GO  
SET QUOTED_IDENTIFIER ON  
GO  
-- =============================================  
-- Author:  <Yordan Georgiev>  
-- Create date: <Create Date,,>  
-- Description: <Description,,>  
-- =============================================  
CREATE TRIGGER  [dbo].[trigGen_AfterDeleteOn' + @TableName + ']   
ON  [dbo].[' + @TableName + ']  
for Delete  
AS   
BEGIN  
-- SET NOCOUNT ON added to prevent extra result sets from  
-- interfering with SELECT statements.  
SET NOCOUNT ON;  
Insert into ' + @TableName + 'History   
(   
'                    
--Loop through until all row processing is done                              
WHILE @CurrentDelimiterPositionVar <= @Count --while 1  
BEGIN           
--Load current value from the Table                              
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                    
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar          
--DO SOMETHING TO THE FIRST COLUMN   
--if ( @CurrentDelimiterPositionVar = 1 )     
--begin    
--set @CurrentDelimiterPositionVar =@CurrentDelimiterPositionVar + 1    
-- continue    
--end    
--Process the current value                              
if @CurrentDelimiterPositionVar = @Count                              
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this time with 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 --eof while 1                             
print '  
[SqlLogin],  
[Action],  
[UpdatedWhen]  
)  
SELECT   
'  
-- end the insert into STATEMENT  
--SELECT TOP 5 * FROM ' + @TableName + ' order by 1 desc                     
--AND START ALL OVER AGAIN        
SET @CurrentDelimiterPositionVar = 1                    
--Loop through until all row processing is done              
WHILE @CurrentDelimiterPositionVar <= @Count --while 2 start  
BEGIN                              
--Load current value from the Table                              
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                    
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar               
--DO SOMETHING TO THE FIRST COLUMN   
--if ( @CurrentDelimiterPositionVar = 1 )     
--begin    
--set @CurrentDelimiterPositionVar =@CurrentDelimiterPositionVar + 1    
-- continue    
--end    
--Process the current value                              
if @CurrentDelimiterPositionVar = @Count                              
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this with  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 --eof while 2  
print 'user_name(),  
''DELETE'',  
getdate()'  
print '   
from Deleted  
END  
GO  
'  
PRINT '--SELECT * FROM [dbo].[' + @TableName + 'History] ORDER BY 1 DESC '          
PRINT '--SELECT NAME FROM SYS.PROCEDURES WHERE NAME LIKE ''%PROC%'''              
PRINT '--SELECT NAME FROM SYS.TABLES WHERE NAME LIKE ''%TABLE%'''              
PRINT '--exec sp_HelpText procUtils_GenerateMetaInsert'              
PRINT '--exec procUtils_GenerateMetaInsert ''TABLE'''              
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 [Gaf]                          
GO                          
SELECT NAME FROM SYS.tables where name like '%Msg%'                          
EXEC [dbo].[procUtils_GenerateOnDeleteTrigger] @TableName = N'Requirement'                    
GO                          
*/ 
 
 
---
 
CREATE PROCEDURE [dbo].[procUtils_GenerateOnUpdateTrigger]
@TableName [varchar](50)
WITH EXECUTE AS CALLER
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                                
DECLARE @PkColName varchar(200)                                 
--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 '                      
USE [Gaf]    
GO    
/****** Object:  Trigger [trigGen_AfterUpdateOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/    
IF  EXISTS (SELECT * FROM sys.triggers WHERE object_id = OBJECT_ID(N''[dbo].[trigGen_AfterUpdateOn' + @TableName + ']''))    
DROP TRIGGER [dbo].[trigGen_AfterUpdateOn' + @TableName + ']    
GO    
USE [Gaf]    
GO    
/****** Object:  Trigger [dbo].[trigGen_AfterUpdateOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/    
SET ANSI_NULLS ON    
GO    
SET QUOTED_IDENTIFIER ON    
GO    
-- =============================================    
-- Author:  <Yordan Georgiev>    
-- Create date: <Create Date,,>    
-- Description: <Description,,>    
-- =============================================    
CREATE TRIGGER  [dbo].[trigGen_AfterUpdateOn' + @TableName + ']     
ON  [dbo].[' + @TableName + ']    
for Update    
AS     
BEGIN    
-- SET NOCOUNT ON added to prevent extra result sets from    
-- interfering with SELECT statements.    
SET NOCOUNT ON;    
Insert into ' + @TableName + 'History     
(     
'                      
--Loop through until all row processing is done                                
WHILE @CurrentDelimiterPositionVar <= @Count --while 1    
BEGIN                                
--Load current value from the Table                                
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                      
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar            
--DO SOMETHING TO THE FIRST COLUMN     
if ( @CurrentDelimiterPositionVar = 1 )       
begin      
SET @PkColName = @ColumnName    
end      
if @CurrentDelimiterPositionVar = @Count                                
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this time with 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 --eof while 1                               
print '    
[SqlLogin],    
[Action],    
[UpdatedWhen]    
)    
SELECT     
'    
-- end the insert into STATEMENT    
--SELECT TOP 5 * FROM ' + @TableName + ' order by 1 desc                       
--AND START ALL OVER AGAIN          
SET @CurrentDelimiterPositionVar = 1                      
--Loop through until all row processing is done                
WHILE @CurrentDelimiterPositionVar <= @Count --while 2 start    
BEGIN                                
--Load current value from the Table                                
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                      
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                 
--DO SOMETHING TO THE FIRST COLUMN     
--if ( @CurrentDelimiterPositionVar = 1 )       
--begin      
--set @CurrentDelimiterPositionVar =@CurrentDelimiterPositionVar + 1      
-- continue      
--end      
--Process the current value                                
if @CurrentDelimiterPositionVar = @Count                                
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this with  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 --eof while 2    
print 'user_name(),    
''UPDATE'',    
getdate()'    
print '     
from '+ @TableName + ' where '+ @PkColName + ' in (select ' + @PkColName + ' from Inserted)    
END    
GO    
'    
PRINT '--SELECT * FROM [dbo].[' + @TableName + 'History] ORDER BY 1 DESC '            
PRINT '--SELECT NAME FROM SYS.PROCEDURES WHERE NAME LIKE ''%PROC%'''                
PRINT '--SELECT NAME FROM SYS.TABLES WHERE NAME LIKE ''%TABLE%'''                
PRINT '--exec sp_HelpText procUtils_GenerateMetaInsert'                
PRINT '--exec procUtils_GenerateMetaInsert ''TABLE'''                
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 [Gaf]                            
GO                            
SELECT NAME FROM SYS.tables where name like '%Msg%'                            
EXEC [dbo].[procUtils_GenerateOnInsertTrigger] @TableName = N'Requirement'                      
GO                            
*/ 
 
 
---
CREATE PROCEDURE [dbo].[procUtils_GenerateOnInsertTrigger]      
@TableName [varchar](50)      
WITH EXECUTE AS CALLER      
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                                
DECLARE @PkColName varchar(200)                                 
--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 '                      
USE [Gaf]    
GO    
/****** Object:  Trigger [trigGen_AfterInsertOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/    
IF  EXISTS (SELECT * FROM sys.triggers WHERE object_id = OBJECT_ID(N''[dbo].[trigGen_AfterInsertOn' + @TableName + ']''))    
DROP TRIGGER [dbo].[trigGen_AfterInsertOn' + @TableName + ']    
GO    
USE [Gaf]    
GO    
/****** Object:  Trigger [dbo].[trigGen_AfterInsertOn' + @TableName + ']    Script Date: 11/25/2009 10:35:45 ******/    
SET ANSI_NULLS ON    
GO    
SET QUOTED_IDENTIFIER ON    
GO    
-- =============================================    
-- Author:  <Yordan Georgiev>    
-- Create date: <Create Date,,>    
-- Description: <Description,,>    
-- =============================================    
CREATE TRIGGER  [dbo].[trigGen_AfterInsertOn' + @TableName + ']     
ON  [dbo].[' + @TableName + ']    
for Insert    
AS     
BEGIN    
-- SET NOCOUNT ON added to prevent extra result sets from    
-- interfering with SELECT statements.    
SET NOCOUNT ON;    
Insert into ' + @TableName + 'History     
(     
'                      
--Loop through until all row processing is done                                
WHILE @CurrentDelimiterPositionVar <= @Count --while 1    
BEGIN                                
--Load current value from the Table                                
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                      
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar            
--DO SOMETHING TO THE FIRST COLUMN     
if ( @CurrentDelimiterPositionVar = 1 )       
begin      
SET @PkColName = @ColumnName    
end      
if @CurrentDelimiterPositionVar = @Count                                
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this time with 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 --eof while 1                               
print '    
[SqlLogin],    
[Action],    
[UpdatedWhen]    
)    
SELECT     
'    
-- end the insert into STATEMENT    
--SELECT TOP 5 * FROM ' + @TableName + ' order by 1 desc                       
--AND START ALL OVER AGAIN          
SET @CurrentDelimiterPositionVar = 1                      
--Loop through until all row processing is done                
WHILE @CurrentDelimiterPositionVar <= @Count --while 2 start    
BEGIN                                
--Load current value from the Table                                
SELECT @ColumnName = ColName FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                      
SELECT @DataType = DataType FROM @ColNames WHERE Number = @CurrentDelimiterPositionVar                 
--DO SOMETHING TO THE FIRST COLUMN     
--if ( @CurrentDelimiterPositionVar = 1 )       
--begin      
--set @CurrentDelimiterPositionVar =@CurrentDelimiterPositionVar + 1      
-- continue      
--end      
--Process the current value                                
if @CurrentDelimiterPositionVar = @Count                                
print '[' + @ColumnName + '] , --type of ' + @DataType -- this is the last row this with  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 --eof while 2    
print 'user_name(),    
''INSERT'',    
getdate()'    
print '     
from '+ @TableName + ' where '+ @PkColName + ' in (select ' + @PkColName + ' from Inserted)  
END    
GO    
'    
PRINT '--SELECT * FROM [dbo].[' + @TableName + 'History] ORDER BY 1 DESC '            
PRINT '--SELECT NAME FROM SYS.PROCEDURES WHERE NAME LIKE ''%PROC%'''                
PRINT '--SELECT NAME FROM SYS.TABLES WHERE NAME LIKE ''%TABLE%'''                
PRINT '--exec sp_HelpText procUtils_GenerateMetaInsert'                
PRINT '--exec procUtils_GenerateMetaInsert ''TABLE'''                
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 [Gaf]                            
GO                            
SELECT NAME FROM SYS.tables where name like '%Msg%'                            
EXEC [dbo].[procUtils_GenerateOnInsertTrigger] @TableName = N'Msg'                      
GO                            
*/ 
 
 
---
CREATE PROCEDURE [dbo].[procUtils_GenerateTableHistorySql]  
@TableName varchar(50)
WITH EXECUTE AS CALLER  
AS  
BEGIN -- proc start                              
SET NOCOUNT ON;                              
declare @procedureName varchar(200)          
declare @procStep varchar(4000)    
declare @thisProcName varchar(300)  
set @thisProcName= ( SELECT OBJECT_NAME(@@PROCID))          
set @procStep = ' '       
BEGIN TRY        --begin try                    
 
 
 
-- Action !!!
exec procUtils_GenerateHistoryTable @TableName 
exec procUtils_GenerateOnInsertTrigger @TableName
exec procUtils_GenerateOnUpdateTrigger @TableName
exec procUtils_GenerateOnDeleteTrigger @TableName
 
 
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 [Gaf]  
GO  
DECLARE @return_value int,  
@ret int  
EXEC @return_value = [dbo].[procUtils_GenerateTableHistorySql1]  
@UserSessionId = 2,  
@PageTypeId = 12,  
@msgOut = NULL,  
@debugMsgOut = NULL,  
@ret = @ret OUTPUT  
SELECT @ret as N'@ret'  
SELECT 'Return Value' = @return_value  
SELECT NAME FROM SYS.PROCEDURES WHERE NAME LIKE '%grep%'  
exec SP_HelpText 'proc'  
GO  
*/ 
 

2009-11-25

GENERIC WAY OF ADDING FK's with on update cascade and on delete cascade



--GENERIC WAY OF ADDING FK's with on update cascade and on delete cascade 
ALTER TABLE [dbo].[FkTable] WITH CHECK ADD CONSTRAINT [FK_FkTable_FkColName_PkTable_PkColName] FOREIGN KEY([FkColName])
REFERENCES [dbo].[PkTable] ([PkColName])
ON UPDATE CASCADE
ON DELETE CASCADE
GO
 
ALTER TABLE [dbo].[FkTable] CHECK CONSTRAINT [FK_FkTable_FkColName_PkTable_PkColName]
GO
 
--AND NOW QUERY THEM 
SELECT OBJECT_NAME(f.parent_object_id) AS 'FkTable' , 
COL_NAME(fc.parent_object_id,fc.parent_column_id) AS 'FkColName' , 
f.name AS 'FkName' , 
OBJECT_NAME (f.referenced_object_id) as 'PkTable' , COL_NAME(fc.referenced_object_id,
fc.referenced_column_id) AS 'PKColName'
FROM .sys.foreign_keys AS f
INNER JOIN .sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id
 

2009-11-24

Drop and recreate FK's



SELECT 'ALTER TABLE ' + OBJECT_NAME(f.parent_object_id)+
' DROP  CONSTRAINT ' + f.name 
FROM .sys.foreign_keys AS f
INNER JOIN .sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id
 
 
 
SELECT 'ALTER TABLE ' + OBJECT_NAME(f.parent_object_id)+
' ADD CONSTRAINT ' + f.name + ' FOREIGN KEY'+'('+COL_NAME(fc.parent_object_id,fc.parent_column_id)+')'
+'REFERENCES '+OBJECT_NAME (f.referenced_object_id)+'('+COL_NAME(fc.referenced_object_id,
fc.referenced_column_id)+')' as Scripts
FROM .sys.foreign_keys AS f
INNER JOIN .sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id

How-to add foreign key references

SOURCE:http://blog.sqlauthority.com/2009/07/23/sql-server-puzzle-write-script-to-generate-primary-key-and-foreign-key/


-- ADD FOREIGN KEY REFERENCES 
select 'ALTER TABLE '+ OBJECT_NAME(f.parent_object_id)+ 
' ADD CONSTRAINT ' + f.name + ' FOREIGN KEY'+'(' + 
COL_NAME(fc.parent_object_id,fc.parent_column_id)+')'+ 
' REFERENCES '+OBJECT_NAME (f.referenced_object_id)+'('+ 
COL_NAME(fc.referenced_object_id,fc.referenced_column_id)+')' as Scripts
FROM sys.foreign_keys AS f
INNER JOIN sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id

Why use proper naming conventions while generating code ?



select 
 
 
'EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'''
+ reverse ( substring ( reverse ( substring ( name , 9 , len(name)) ) , 
11 , LEN ( reverse ( substring ( name , 9 , len(name)) ) )))
+ ''''
 
 
from sys.procedures where name like 'procGen%_selectAll'
 
 
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'NamingConvention'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'PlAddNew'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'PlEditItem'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'TestCase'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'RequirementHistory'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'StatusForObject'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'PlSearchItem'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'PageTypeMsg'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Status'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Specification'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Functionality'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'TaskHistory'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Task'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'msg'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'MenuItem'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Bug1'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'AppSetting'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'GuiPage'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Menu'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'LogStore'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Company'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'FunctionalityHistory'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Requirement'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'Bug'
EXEC [dbo].[procUtils_GenerateSelectAllView] @TableName = N'BugHistory'

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