CREATE PROCEDURE [admin].[RowLevelAuditingAdd]

@SchemaName NVARCHAR(50) = NULL

, @TableName NVARCHAR(50) = NULL

SET XACT_ABORT ON

BEGIN TRANSACTION;

SET NOCOUNT ON

DECLARE @SqlCommand NVARCHAR(1000)

DECLARE @TableKey NVARCHAR(1000)

DECLARE @UserName NVARCHAR(50)

DECLARE @CreatedId NVARCHAR(50)

DECLARE @CreatedDate NVARCHAR(50)

DECLARE @ModifiedId NVARCHAR(50)

DECLARE @ModifiedDate NVARCHAR(50)

DECLARE @TodayDate NVARCHAR(50)

SET @CreatedId = 'CreatedId'

SET @CreatedDate = 'CreatedDate'

SET @ModifiedId = 'ModifiedId'

SET @ModifiedDate = 'ModifiedDate'

SET @UserName = LEFT(RIGHT(SYSTEM_USER,(LEN(SYSTEM_USER)-CHARINDEX('\',SYSTEM_USER))), 50)

SET @TodayDate = FORMAT(GETDATE(), 'dd-MMM-yyyy HH:mm:ss', 'en-US' )

PRINT '=====================================================================';

PRINT 'START - ALTER [' + @SchemaName + '].[' + @TableName + ']... ';

IF COL_LENGTH(@SchemaName + '.' + @TableName, @CreatedId) IS NULL

BEGIN

PRINT '=====================================================================';

PRINT 'START - ADD COLUMN [' + @CreatedId + ']... ';

PRINT '1. alter table add ' + @CreatedId + ' column... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD [' + @CreatedId + '] [NVARCHAR](50) NULL'

EXEC (@SqlCommand)

PRINT '2. update new column to a value... ' + @UserName;

SET @SqlCommand = 'UPDATE [' + @SchemaName + '].[' + @TableName + '] SET [' + @CreatedId + '] =''' + @UserName + ''' WHERE [' + @CreatedId + '] IS NULL'

EXEC (@SqlCommand)

PRINT '3. alter table alter new column add constraints... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ALTER COLUMN [' + @CreatedId + '] [NVARCHAR](50) NOT NULL'

EXEC (@SqlCommand)

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD CONSTRAINT [DF_' + @TableName + '_' + @CreatedId + '] DEFAULT (LEFT(RIGHT(SYSTEM_USER,(LEN(SYSTEM_USER)-CHARINDEX(''\'',SYSTEM_USER))), 50)) FOR [' + @CreatedId + ']'

EXEC (@SqlCommand)

PRINT '4. add column description... ';

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'Who created the record' , @level0type=N'SCHEMA',@level0name=@SchemaName, @level1type=N'TABLE',@level1name=@TableName, @level2type=N'COLUMN',@level2name=@CreatedId;

PRINT 'END - ADD COLUMN [' + @CreatedId + ']... ';

PRINT '=====================================================================';

END

IF COL_LENGTH(@SchemaName + '.' + @TableName, @CreatedDate) IS NULL

BEGIN

PRINT '=====================================================================';

PRINT 'START - ADD COLUMN [' + @CreatedDate + ']... ';

PRINT '1. alter table add ' + @CreatedDate + ' column... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD [' + @CreatedDate + '] [DATETIME] NULL'

EXEC (@SqlCommand)

PRINT '2. update new column to a value... ' + @TodayDate;

SET @SqlCommand = 'UPDATE [' + @SchemaName + '].[' + @TableName + '] SET [' + @CreatedDate + '] = ''' + @TodayDate+ ''' WHERE [' + @CreatedDate + '] IS NULL'

EXEC (@SqlCommand)

PRINT '3. alter table alter new column add constraints... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ALTER COLUMN [' + @CreatedDate + '] [DATETIME] NOT NULL'

EXEC (@SqlCommand)

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD CONSTRAINT [DF_' + @TableName + '_' + @CreatedDate + '] DEFAULT (GETDATE()) FOR [' + @CreatedDate + ']'

EXEC (@SqlCommand)

PRINT '4. add column description... ';

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'The date and time the record was created' , @level0type=N'SCHEMA',@level0name=@SchemaName, @level1type=N'TABLE',@level1name=@TableName, @level2type=N'COLUMN',@level2name=@CreatedDate;

PRINT 'END - ADD COLUMN [' + @CreatedDate + ']... ';

PRINT '=====================================================================';

END

IF COL_LENGTH(@SchemaName + '.' + @TableName, @ModifiedId) IS NULL

BEGIN

PRINT '=====================================================================';

PRINT 'START - ADD COLUMN [' + @ModifiedId + ']... ';

PRINT '1. alter table add ' + @ModifiedId + ' column... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD [' + @ModifiedId + '] [NVARCHAR](50) NULL'

EXEC (@SqlCommand)

PRINT '2. update new column to a value... ' + @UserName;

SET @SqlCommand = 'UPDATE [' + @SchemaName + '].[' + @TableName + '] SET [' + @ModifiedId + '] =''' + @UserName + ''' WHERE [' + @ModifiedId + '] IS NULL'

EXEC (@SqlCommand)

PRINT '3. alter table alter new column add constraints... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ALTER COLUMN [' + @ModifiedId + '] [NVARCHAR](50) NOT NULL'

EXEC (@SqlCommand)

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD CONSTRAINT [DF_' + @TableName + '_' + @ModifiedId + '] DEFAULT (LEFT(RIGHT(SYSTEM_USER,(LEN(SYSTEM_USER)-CHARINDEX(''\'',SYSTEM_USER))), 50)) FOR [' + @ModifiedId + ']'

EXEC (@SqlCommand)

PRINT '4. add column description... ';

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'Who modified the record' , @level0type=N'SCHEMA',@level0name=@SchemaName, @level1type=N'TABLE',@level1name=@TableName, @level2type=N'COLUMN',@level2name=@ModifiedId;

PRINT 'END - ADD COLUMN [' + @ModifiedId + ']... ';

PRINT '=====================================================================';

END

IF COL_LENGTH(@SchemaName + '.' + @TableName, @ModifiedDate) IS NULL

BEGIN

PRINT '=====================================================================';

PRINT 'START - ADD COLUMN [' + @ModifiedDate + ']... ';

PRINT '1. alter table add ' + @ModifiedDate + ' column... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD [' + @ModifiedDate + '] [DATETIME] NULL'

EXEC (@SqlCommand)

PRINT '2. update new column to a value... ' + @TodayDate;

SET @SqlCommand = 'UPDATE [' + @SchemaName + '].[' + @TableName + '] SET [' + @ModifiedDate + '] = ''' + @TodayDate+ ''' WHERE [' + @ModifiedDate + '] IS NULL'

EXEC (@SqlCommand)

PRINT '3. alter table alter new column add constraints... ';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ALTER COLUMN [' + @ModifiedDate + '] [DATETIME] NOT NULL'

EXEC (@SqlCommand)

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ADD CONSTRAINT [DF_' + @TableName + '_' + @ModifiedDate + '] DEFAULT (GETDATE()) FOR [' + @ModifiedDate + ']'

EXEC (@SqlCommand)

PRINT '4. add column description... ';

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'The date and time the record was modified' , @level0type=N'SCHEMA',@level0name=@SchemaName, @level1type=N'TABLE',@level1name=@TableName, @level2type=N'COLUMN',@level2name=@ModifiedDate;

PRINT 'END - ADD COLUMN [' + @ModifiedDate + ']... ';

PRINT '=====================================================================';

END

IF NOT EXISTS (SELECT * FROM sys.triggers WHERE object_id = OBJECT_ID(N'[' + @SchemaName + '].[TR_' + @TableName + '_LAST_UPDATED]'))

BEGIN

PRINT '=====================================================================';

PRINT 'START - ADD TRIGGER [TR_' + @TableName + '_LAST_UPDATED]... ';

PRINT '1. get primary key from information schema';

SELECT

@TableKey = COALESCE(@TableKey, '') + CASE WHEN ORDINAL_POSITION = 1 THEN 'ON' ELSE 'AND' END + ' t.' + COLUMN_NAME + ' = i.' + COLUMN_NAME + ' '

FROM

INFORMATION_SCHEMA.KEY_COLUMN_USAGE

WHERE

1=1

AND OBJECTPROPERTY(OBJECT_ID(CONSTRAINT_SCHEMA + '.' + QUOTENAME(CONSTRAINT_NAME)), 'IsPrimaryKey') = 1

AND TABLE_NAME = @TableName AND TABLE_SCHEMA = @SchemaName

ORDER BY

ORDINAL_POSITION

PRINT '2. build trigger dynamically';

SET @SqlCommand = 'CREATE TRIGGER [' + @SchemaName + '].[TR_' + @TableName + '_LAST_UPDATED]' + CHAR(13);

SET @SqlCommand += 'ON [' + @SchemaName + '].[' + @TableName + ']' + CHAR(13);

SET @SqlCommand += 'AFTER UPDATE' + CHAR(13);

SET @SqlCommand += 'AS' + CHAR(13);

SET @SqlCommand += 'BEGIN' + CHAR(13);

SET @SqlCommand += CHAR(9) + 'IF NOT UPDATE(' + @ModifiedDate + ')' + CHAR(13);

SET @SqlCommand += CHAR(9) + 'BEGIN' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + 'UPDATE t' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + 'SET' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + ' t.' + @ModifiedDate + ' = CURRENT_TIMESTAMP' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + ', t.' + @ModifiedId + ' = LEFT(RIGHT(SYSTEM_USER,(LEN(SYSTEM_USER)-CHARINDEX(''\'',SYSTEM_USER))), 50)' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + 'FROM [' + @SchemaName + '].[' + @TableName + '] AS t' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + 'INNER JOIN inserted AS i' + CHAR(13);

SET @SqlCommand += CHAR(9) + CHAR(9) + @TableKey + ';' + CHAR(13);

SET @SqlCommand += CHAR(9) + 'END' + CHAR(13);

SET @SqlCommand += 'END;' + CHAR(13);

EXEC (@SqlCommand)

PRINT '3. enable trigger';

SET @SqlCommand = 'ALTER TABLE [' + @SchemaName + '].[' + @TableName + '] ENABLE TRIGGER [TR_' + @TableName + '_LAST_UPDATED]';

EXEC (@SqlCommand)

PRINT 'END - ADD TRIGGER [' + @ModifiedDate + ']... ';

PRINT '=====================================================================';

END

PRINT 'END - ALTER [' + @SchemaName + '].[' + @TableName + ']... ';

PRINT '=====================================================================';

--PRINT 'ROLLBACK TRANSACTION... ';

--ROLLBACK TRANSACTION;

PRINT 'COMMIT TRANSACTION... '

COMMIT TRANSACTION;