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CTE Common Type Expression
For providing pivoting in tables say you want to view your data in such a form such that rows comes in form of columns and columns in form of rows. For doing that SQL provide facility to use CTE in SQL
Ex :
Suppose you ha
Using Delete statement we can delete the record from a table in database . We can delete single or multiple row from a table in database .
Syntax :
delete from table_name where clause ; // where clause is optional
Example :
Table name : Employee
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If you want to add chat functionality in your iOS app . Then this blog can help you to do some basic chat functionality. Such as creating xmpp session , login on sever, creating room, getting list of login buddies and chatting.
First step download t
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Null Values:
Null values denotes missing data in a table or a database. If a column does not have any NOT NULL constraint then for that column there can be NULL values. By default a column can have NULL values.
We cannot use comparison operators li
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