Database

What is TVP (Table Value Parameter) & How to use it ? TIP #57

  This is one of the interesting feature which I like most. Instead of passing values from collection one by one pass entire collection to stored procedure as a table value parameter. I know above statement is not digestive enough so lets understand this by an example. Suppose , I have a table tblStudent with …

Maintenance of fragmented Heap table–TIP #55

  Friends, In last post  post #54  we understood what is a Heap table. Now the challenge is what if this table is highly fragmented so. Now our task is to run maintenance of this highly fragmented table. So you have to run following command “ALTER TABLE  TABLENAME REBUILD; For example  I run the Rebuild …

What is Heap table in SQL Server and How to get all the heap table from a database ? TIP # 54

  Heap table:- A table without cluster index is called Heap table. Now you are thinking why we are talking about this. So as  SQL developer we should aware and In next post I will explain which is related to maintenance how to Rebuild a heap table. Now our next question is how to determine …

How Enable /Disable all CONSTRAINT on a table ? tip #53

  Dear Friends, Although , When we have designed our database he/she knows what type of constraints is require to make data perfect and the Database designer applies those constraints but it might be possible that sometime we have to disable those constraints make some tweak with the data in the table and then again …

A hidden feature sp_MSforeachdb TIP #52

  As we discussed yesterday a hidden feature tip #51 which is sp_MSForeachtable . sp_MsForeachtable is useful to run command on each table of selected database. Now what if we want to run command on each database also ? then in that case we need to take help of sp_MsForeachDB. Sp_MsForEachDB  by the name it …

A hidden feature sp_MSforeachtable–run on entire tables of a Database TIP# 51

Problem:- Sometimes it happened that you need to run a single statement on entire tables which exists in database.  so most of the time we think of cursor which run for each sys.objects (table)  and we execute the dynamic statement by replacing table name. Solution: Although the solution we are thinking is correct there is …

A Interview question How to determine what value you have updated of a column ? A output clause example #TIP 48

  Problem:- Sometimes it may require that whatever you have updated you want to know what was the previous value of that column? It was asked by many interviewer in the interview how to avoid trigger or how to know what was previous value before update ? Solution:- Now to achieve this the basic step …