SQL Server - Procedures and Programming. SQL Server Change Tracking on Table (Without Triggers)Introduction. Before you start reading this article. Just wanted to tell. I don’t write articles much, this is just an attempt after years. So please excuse the paraphrases if they are not well articulated. My objective. is to just give you a bit of idea about some of the hidden mechanism of SQL (or maybe I was not. Change. Tracking. Most of the time we have experienced that triggers are not. Since event of triggers are tightly bind with the insert update or delete. Soon after implementation you might experience issues in future releases. There was never a straightforward solution to track the changes that are happing. And this becomes a biggest challenge when you have a limitation that and. DO NOT USE TRIGGERS”. Well here I’m going to introduce you with a workaround of trigger. I should put it in this words. How to keep a track of the records those. Overview. Change Tracking enables an application to keep track of. This plays a very important role when you are building a real. Mangodb. Configuring / Enabling CT (Change Tracking). Alter. Database < Database. Sql Last Time Table UpdatedName>. set change_tracking = on. Note: once the CT is turned on, on the database level it does not enables the CT of all the tables of the database. The CT mast to be enabled on the tables individually. Let me explain a bit here: the functionality of CT is to keep. ![]() If you look. carefully the Change_retention = 2 will. Configuring Table for CT (Change Tracking)For this article I have created the sample table named Employee. Createtable Employee. Employee. ID nvarchar(1. First. Name nvarchar(1.
![]() Last. Name nvarchar(1. Phone. 1 nvarchar(1. Employee (Employee. ID,First. Name,Last. Name,Phone. 1) Values ('E0. Santosh','Poojari','1. Employee (Employee. ID,First. Name,Last. Name,Phone. 1) Values ('E0. Karan','Shah','2. Employee (Employee. ID,First. Name,Last. Name,Phone. 1) Values ('E0. Sql Server Table Update TimeVineesh','Padmanabhan','3. Employee (Employee. ID,First. Name,Last. Name,Phone. 1) Values ('E0. Gautam','Sharma','4. Since the database is configured with the CT. CT on the table. Below is the. CT on Employee table that already have records. How to keep ElasticSearch up-to-date with SQLServer without code? In the table have a last updated. then probably you should consider SQL Server service. In this article you will learn how to get last updated Column Value in GROUP BY Statement SQL Server. ALTERTABLE Employee ENABLE CHANGE_TRACKING WITH (TRACK_COLUMNS_UPDATED = ON); Tracking the Changes made in the Table. Now let's change the phone numbers of two of the employees in table. CT is able to return the Employee ID from the changes are made. Phone. 1 ='1. 21. Employee. ID ='E0. Phone. 1 ='2. 12. Employee. ID ='E0. Identifying the changes: SELECT ISNUll(pn. Employee. ID,0) as Employee. ID. from changetable(changes employee, 1) as ct. INNERJOIN employee pn on pn. Employee. ID = CT. Employee. ID. WHERE SYS_CHANGE_VERSION > 1and CT. Sys_Change_Operation < > 'D'. As you can see in the above box that the CT is able to give you the employee ID of the modified records in the employee table. Now let me modify the code little bit and show the entire column info that is been returned in the resultset. SELECT *. from changetable(changes employee, 1) as ct. INNERJOIN employee pn on pn. Employee. ID = CT. Employee. ID. WHERE SYS_CHANGE_VERSION > 1and CT. Sys_Change_Operation < > 'D'Resultset: SYS_CHANGE_VERSIONSYS_CHANGE_CREATION_VERSIONSYS_CHANGE_OPERATIONSYS_CHANGE_COLUMNSSYS_CHANGE_CONTEXTEmployee. IDFirst. Name. Last. Name. Phone. 12. 62. U0x. 00. 00. 00. 00. NULLE0. 01. Santosh. Poojari. 12. 12. 12. U0x. 00. 00. 00. 00. NULLE0. 02. Karan. Shah. 21. 21. 21. The SYS_CHANGE_OPERATION column provides the information what. U” stats that it was modified. Let's do and insert and see what the resultset would look like: insertinto Employee (Employee. ID,First. Name,Last. Name,Phone. 1) Values ('E0. S','G','5. 55. 55. INNERJOIN employee pn on pn. Employee. ID = CT. Employee. ID. WHERE SYS_CHANGE_VERSION > 1and CT. Sys_Change_Operation < > 'D'Resultset: SYS_CHANGE_VERSIONSYS_CHANGE_CREATION_VERSIONSYS_CHANGE_OPERATIONSYS_CHANGE_COLUMNSSYS_CHANGE_CONTEXTEmployee. IDFirst. Name. Last. Name. Phone. 12. 62. U0x. 00. 00. 00. 00. NULLE0. 01. Santosh. Poojari. 12. 12. 12. U0x. 00. 00. 00. 00. NULLE0. 02. Karan. Shah. 21. 21. 21. INULLNULLE0. 06. SG5. As you can see the column SYS_CHANGE_OPERATION with new employee. So whenever there are any changes that are done on CT enabled. A new version number is created and will be retained in the change. You can write to me if there are any further queries. You can. also refer the tutorial on MSDN by clicking here.
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