Trending questions in Database

+1 vote
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Difference between cross join and natural join

The cross join produces the cross product ...READ MORE

Oct 12, 2018 in Database by DataKing99
 • 8,240 points • 16,106 views
0 votes
0 answers

What is the best design for a database table that can be owned by two different resources, and therefore needs two different foreign keys?

Oct 11, 2019 in Database by Daric
 • 500 points • 452 views
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1 answer

Can we store images in database

Beware that serving images from DB is ...READ MORE

Oct 4, 2019 in Database by Daric
 • 500 points • 630 views
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1 answer

How does database indexing work

If you have a book about dogs ...READ MORE

Oct 4, 2019 in Database by Daric
 • 500 points • 558 views
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1 answer

How do I reset a sequence in Oracle?

 If you want to set it to ...READ MORE

Sep 27, 2019 in Database by Omaiz
 • 560 points • 665 views
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2 answers

Why is SELECT * table_name; is considered harmful?

Hi. Adding to @Tina's answer, there is ...READ MORE

Sep 23, 2019 in Database by Raghu
 • 850 views
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1 answer

Which is faster/best? SELECT * or SELECT col1, col2,......colN

There are four big reasons that select * is ...READ MORE

Sep 27, 2019 in Database by Omaiz
 • 560 points • 635 views
0 votes
1 answer

Why is SELECT * considered harmful?

If you add fields to the table, ...READ MORE

Sep 27, 2019 in Database by Omaiz
 • 560 points • 548 views
0 votes
1 answer

What does recursive stored procedure?

Recursive stored procedure refers to a stored ...READ MORE

Sep 27, 2018 in Database by Sahiti
 • 6,370 points • 14,754 views
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0 answers

Which SQL server should we use for SQL queries to be executed?

I mean to say which SQL server ...READ MORE

Aug 18, 2019 in Database by Sonali
 • 412 views
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3 answers

What is Phantom deadlock?

To understand phantom deadlock, you need an ...READ MORE

Feb 13, 2019 in Database by Ravi kumar
 • 8,790 views
0 votes
1 answer

How to load data of .csv file in MySQL Database Table?

At first, put the dataset in the ...READ MORE

Jul 5, 2019 in Database by Reshma
 • 1,163 views
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1 answer

How can I check my all existing table in MySQL database?

Hi Pratik, I understand your problem regarding this ...READ MORE

Jul 1, 2019 in Database by sampriti
 • 1,120 points • 1,259 views
0 votes
1 answer

What is the rule to use group by, having and where clause?

Hi samar, this is a very common mistake ...READ MORE

Jul 2, 2019 in Database by anonymous
 • 1,099 views
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1 answer

How can I change my existing database name?

Hey Partha, I understand your problem, I think this ...READ MORE

Jul 5, 2019 in Database by sampriti
 • 1,120 points • 1,008 views
+1 vote
1 answer

Do I need to mention primary key for each table?

Hi Pritha, First, there is no hard and ...READ MORE

Jul 4, 2019 in Database by sampriti
 • 1,120 points • 691 views
+1 vote
1 answer

How can I reset my auto_increment column in MYSQL?

Hi Pratim, I understand your issue. I think you ...READ MORE

Jul 2, 2019 in Database by sampriti
 • 1,120 points • 768 views
0 votes
1 answer

How will I get all the rows from my table where name starts with 's' and ending with 'I'?

Hi Santanu, I understand your problem, You can try ...READ MORE

May 28, 2019 in Database by sampriti
 • 1,120 points • 1,768 views
0 votes
1 answer

What is the best way to fetch data from table?

Hey Shraddha, I understand your doubts about fetching ...READ MORE

May 25, 2019 in Database by sampriti
 • 1,120 points • 1,811 views
0 votes
1 answer

MSSQL installation fails at mssql-conf setup

Hi @Denis!  The problem has occurred due to the ...READ MORE

Mar 22, 2019 in Database by Omkar
 • 69,230 points • 4,439 views
0 votes
1 answer

Find values in a comma separated string in a MySQL query

You can add commas to the left and ...READ MORE

Sep 10, 2018 in Database by Sahiti
 • 6,370 points • 12,681 views
0 votes
1 answer

Can you explain what is the difference between UNION and Join?

Hi Sahana,  I got your doubt, Checkout these ...READ MORE

May 30, 2019 in Database by sampriti
 • 1,120 points • 1,170 views
0 votes
1 answer

Do I need to add primary key in each and every table?

Hi Shraddha, You have a doubt to add ...READ MORE

May 29, 2019 in Database by sampriti
 • 1,120 points • 1,188 views
0 votes
1 answer

What is the SQL query to get the third highest salary of an employee from employee_table

You can try out something like this: SELECT ...READ MORE

Sep 27, 2018 in Database by Sahiti
 • 6,370 points • 11,696 views
0 votes
2 answers

How to create a shared database for users for different systems to connect to a single database in another system.?

Like Omkar said, while presenting your project ...READ MORE

Mar 18, 2019 in Database by Vardhan
 • 13,190 points • 4,223 views
0 votes
1 answer

What are the different types of join in SQL?

Hi Suraj, You have a doubt regarding inner join ...READ MORE

May 28, 2019 in Database by sampriti
 • 1,120 points • 1,133 views
0 votes
1 answer

What are VDL and SDL?

VDL(View Definition Language): Represents user views and ...READ MORE

Nov 13, 2018 in Database by DataKing99
 • 8,240 points • 9,549 views
0 votes
1 answer

How to sort the data in sql ?

Hi Akash,  If you want to sort ...READ MORE

May 29, 2019 in Database by sampriti
 • 1,120 points • 934 views
0 votes
1 answer

Can you please explain the difference between inner join and outer join in database?

Hi Suraj, You have a doubt regarding inner join ...READ MORE

May 28, 2019 in Database by sampriti
 • 1,120 points • 942 views
0 votes
1 answer

How to schedule a job for SQL query to run daily?

down voteaccepted Expand the SQL Server Agent node ...READ MORE

Oct 25, 2018 in Database by Frankie
 • 9,830 points • 9,829 views
0 votes
1 answer

How to display the queries executed by a particular user in MySQL?

From the version 5.1.7 onward, MySQL allows ...READ MORE

Mar 7, 2019 in Database by Mishti
 • 480 points • 3,779 views
0 votes
1 answer

Install DB2 on windows

Hey @Alok, follow these instructions: On the DB2 ...READ MORE

Mar 20, 2019 in Database by Kavyashri
 • 2,268 views
0 votes
1 answer

Error: Cannot connect to the SQL Server on Ubuntu from SSMS - installing mssql on linux

Hey @Rajni, Verify if the server is running ...READ MORE

Mar 17, 2019 in Database by Anvit
 • 2,204 views
0 votes
1 answer

Install DB2 on Ubuntu

Hey @Dipti, follow these steps to install ...READ MORE

Mar 20, 2019 in Database by Kanika
 • 1,679 views
0 votes
1 answer

How do I install MariaDB on Windows?

Hwy @Mike, install the latest stable version ...READ MORE

Mar 22, 2019 in Database by Nitin
 • 1,576 views
0 votes
1 answer

Unable to uninstall MongoDB

Try apt-get --reinstall install mongodb This will pretend that ...READ MORE

Mar 15, 2019 in Database by Jobin
 • 1,566 views
0 votes
1 answer

What are the different types of index?

There are three types of index namely: Unique ...READ MORE

Oct 17, 2018 in Database by Sahiti
 • 6,370 points • 7,982 views
+1 vote
1 answer

What are the features of MySQL?

The features of MySQL are as follows: Ease ...READ MORE

Dec 12, 2018 in Database by DataKing99
 • 8,240 points • 5,440 views
0 votes
1 answer

Verify MariaDB is installed

Once you're done installing, execute the following ...READ MORE

Mar 18, 2019 in Database by Kiran
 • 1,057 views
0 votes
1 answer

Access progrs prompt without switching accounts

Use the following to get the postgres prompt ...READ MORE

Mar 22, 2019 in Database by Mahi
 • 675 views
0 votes
1 answer

Reset system administrator password - MSSQL Server on Linux

Execute the following two commands: sudo systemctl stop ...READ MORE

Mar 17, 2019 in Database by Fatima
 • 889 views
0 votes
1 answer

What are the prerequisites to install PostgreSQL on Ubuntu?

Before you start installing postgreSQL, make sure ...READ MORE

Mar 22, 2019 in Database by Manoj
 • 660 views
0 votes
1 answer

Create new role - postgresql on ubuntu

If you are logged in as the postgres account, ...READ MORE

Mar 22, 2019 in Database by Danny
 • 612 views
0 votes
1 answer

What are the hardware requirements to install DB2 on Linux?

Hey @Kiran, DB2 Server is available for ...READ MORE

Mar 20, 2019 in Database by Kevin
 • 628 views
0 votes
1 answer

Switch to postgresql acoount

Switch over to the postgres account on your server ...READ MORE

Mar 22, 2019 in Database by Kyraa
 • 460 views
0 votes
1 answer

Software requirements to install DB2 on Linux

Before installing the DB2 server, your system ...READ MORE

Mar 20, 2019 in Database by Yamini
 • 547 views
0 votes
1 answer

Restrictions while installing DB2 Server on Linux using DB2 Setup Wizard

Hey it would be helpful if you ...READ MORE

Mar 20, 2019 in Database by Yesha
 • 541 views
0 votes
1 answer

Install MariaDB on Ubuntu

Hey Ravi, execute the following instructions to ...READ MORE

Mar 18, 2019 in Database by Kiran
 • 633 views
0 votes
1 answer

Install MS-SQL Server on Windows

Follow these steps  if you wish to ...READ MORE

Mar 18, 2019 in Database by Kiran
 • 603 views
0 votes
1 answer

Error: Cannot connect to the server using SA account - MSSQL Linux

The option is to reset the system ...READ MORE

Mar 17, 2019 in Database by Fatima
 • 617 views
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