Can a unique index be created on a column, which contains null?
No Answer is Posted For this Question
Be the First to Post Answer
Hi, I have a table A which has four rows as follows Table A ------- empname salary ------- ------ A 1000 B 2000 C 3000 A 1000 B 2000 D 5000 I need the following output: empname salary ------- ------ A 1000 A 1000 B 2000 B 2000 Thanks in advance
Explain what are the events recorded in a transaction log?
Without Using Cursors , How to Select the Selected row??
3 Answers CarrizalSoft Technologies, Wipro,
What types of integrity are enforced by a foreign-key constraint
What is merge statement?
How can you insert null values in a column while inserting the data?
What is RAID and what are different types of RAID configurations?
Define inner join in sql server joins?
What is after dml trigger?
What do you mean by a dependent functionality in a build?
Can we write ddl in trigger?
default databases available in sql server and there uses ?
Oracle (3253)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)