MySQL Interview Questions
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at first i'm using datediff('d', a.due_date, current_date); but it takes too long to get the result but how can i subtract the current_date - a.due_date and still get the same result like when i use datediff? thank you

1 1862

how to take mysql database structure backup

6 6191

How do you start MySQL on Linux?

Cybernet,

5 3756




What is the main different between Null and NOT Null. Difference between Primary and Unique Key. How to Check the database from which application is it possibe.

6 4611

What is Foreign Key? What is the main difference between primary key and Foreign Key ? How Foreign Key can be defined? Is Foreign key is used to join two or more table?

4 4643

What is Inner Joints and Outer Joints ? What is right outer joints,left outer joints,right inner joints , left inner joints ,

HP,

2 5243

What is the difference Delete and Drop ?

6 4952

how we connect the data base in any programme

2 2242




What is check constraint?

3 3619

what do you mean by longblob Data type in MySql?

3 9405

What is difference b/w composit key n primary key and forigion key?

4 4652

Print 3 highest salary

9 6988

what programming language which is used for testing and developement in sql?

3 2488

what is the advantage of left outer join?

2 10827

What is the difference between a Table and a View?

3 4072


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Un-Answered Questions { MySQL }

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?

1510


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

537


using primary can we relate two table, with out foreign key?

1651


What are the method you will follow while sql installing

1285


all the queries used in sql

1529






How can you plan the logshipping before processing?

1239


suppose data is copie to oracle to sql by using DTS. Actully it taken 2 hours. suppose some day distribute the server in the middle of 2 hours. after how can i get the data ?

1072


What are the critical issues you have resolved in your company

1121


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

1823


How internally data stores in MyISAM and INNODB table types?

1462


I want to insert userid of a customer,order time,etc in a table called ordermaster with orderid as primary key.Same time the product codes and required quantities (a1,2 and a2 4 and so on)inserted in another table orderdetails with same orderid reference.How the code will be in JSP using MySQL?

885


1.how to fetch a value and Execute store procudure in mysql(INNODB) using phpMyAdmin? 2.can i wright a package in mysql database(INNODB)?

1164


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.

2483


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

980


How can you move the master database

897