MySQL Interview Questions
Questions Answers Views Company eMail

What are some good ideas regarding user security in MySQL?

2 2949

Explain the difference between MyISAM Static and MyISAM Dynamic?

1 7464

What does myisamchk do?

1 2606




Explain advantages of InnoDB over MyISAM?

1 6502

Explain advantages of MyISAM over InnoDB?

1 4542

What are HEAP tables in MySQL?

1 10380

How do you control the max size of a HEAP table?

1 6140

What are CSV tables?

1 4319




Explain federated tables?

Tech Mahindra,

3 5877

What is SERIAL data type in MySQL?

Aspire,

3 40282

What happens when the column is set to AUTO INCREMENT and you reach the maximum value for that table?

2 8987

If we create a column with data type VARCHAR(3), what would we expect to see in MySQL table?

ABC,

2 4034

Explain TIMESTAMP DEFAULT ?2006:09:02 17:38:44′ ON UPDATE CURRENT_TIMESTAMP.

1 1992

What does TIMESTAMP ON UPDATE CURRENT_TIMESTAMP data type do?

1 3355

Explain data type TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP .

Zensar,

2 7262


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Un-Answered Questions { MySQL }

How to define numeric 9(3) in db2 table without decimal point??

1758


why not null is not allowed at table level

1458


How to set the time zone for MySQL to particular country time?

2055


I've looked but can't find a MySQL equivalent for MS SQL's xp_cmdshell. I have 7z files that I want to unzip and load into MySQL. I'm trying to write a sp to do the unzip, but I can't find a way to do that. Can anyone provide an example of a similar process in Windows? TIA.

2408


Please can the SQL code below be interpreted IF @xMatchCriteria='MATCH12' BEGIN IF EXISTS (Select * from #InsightData where (EmailAddress=@xDCPEmailAddress ) ) BEGIN SET @xTestMatchCriteria = @xMatchCriteria; SELECT @xCRMCustomerId=CustomerId, @xCRMDcpCustomerId=DcpCustomerId, @xCRMPortalCustomerID=PortalCustomerID,@xCRMDcpID=DcpID, @xCRMCardNumber=CardNumber, @xCRMEmailAddress=EmailAddress, @xCRMfirtLetterFirstName=firtLetterFirstName, @xCRMLastName=Surname,@xCRMAddressLine1=AddressLine1, @xCRMPostCode=PostCode FROM #InsightData where (EmailAddress=@xDCPEmailAddress ) END ELSE BEGIN SET @xTestMatchCriteria='No'+@xMatchCriteria; END END

489






what is mysql optimization in brief?

1227


Explain the architecture models of SQL Server?

1263


i made a table whih contain a column "Photo" with image data type and i want to insert the byte of a picture present in my hardisk using insert statement in that colum... so what will be my insert statement?

1473


all the queries used in sql

1491


What is striped backup

1195


Hi Team, This is kartik, I recently completed my B-tech. Importance of posting this question is for to know the best books on SQL(MYSQL/Oracle)? I like SQL concept's so much, at the same time i decided to choose SQL for my career purpose. So please suggest me the best books that are very helpful for a fresher to improve concepts like (SQL/PLSQL)Basics, programming concepts, architectures etc. Please consider my request as an important one. I am very thankful to you for providing this opportunity. If possible can you please send the names of books for my personal id also: karthikgdv1206@yahoo.com. Thanks, Kartik T

1036


What are the critical issues you have resolved in your company

1069


explain GROUPBY & HAVING clause with examples.

1174


Can u give the example by taking an unnormalized table and make that 1nf and then 25nf, and then 3 nf?

3552


1)for snapshot replication which agents used? 2)for Transcation replication which agents used? 3)for merge replciation which agents used?

938