Most answered questions in Database

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Which SQL query is used to find Nth highest salary from a salary table

If you want to find nth Salary ...READ MORE

Feb 14, 2022 in Database by Vaani
 • 7,070 points • 2,623 views
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1 answer

Should I use != or <> for not equal in T-SQL?

Most of the existing databases support != Databases that ...READ MORE

Feb 14, 2022 in Database by Vaani
 • 7,070 points • 351 views
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Number of rows affected by an UPDATE in PL/SQL

You can try using the following query: SELECT ...READ MORE

Feb 14, 2022 in Database by Vaani
 • 7,070 points • 1,204 views
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1 answer

ORACLE LIVE SQL IMPORT CSV DATA (live oracle sql)

Convert CSV to SQL http://www.convertcsv.com/csv-to-sql.htm This programme may be ...READ MORE

Feb 11, 2022 in Database by Neha
 • 9,060 points • 7,991 views
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1 answer

NOT IN vs NOT EXISTS

In my opinion, the most efficient way ...READ MORE

Feb 11, 2022 in Database by Neha
 • 9,060 points • 518 views
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Please name some online websites to compile and run PL/SQL?

For executing Oracle SQL queries and PL/SQL ...READ MORE

Feb 11, 2022 in Database by Neha
 • 9,060 points • 1,333 views
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1 answer

What do you mean by Clustered and Non-Clustered index?

The rows in a clustered index are ...READ MORE

Feb 10, 2022 in Database by Vaani
 • 7,070 points • 429 views
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1 answer

Inserting multiple rows in a single SQL query?

In SQL Server 2008, multiple rows can ...READ MORE

Feb 10, 2022 in Database by Vaani
 • 7,070 points • 947 views
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1 answer

SQL Group By with an Order By

In any version of MySQL, you can use the aggregate ...READ MORE

Feb 10, 2022 in Database by Vaani
 • 7,070 points • 434 views
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1 answer

How to delete duplicate rows in SQL Server?

CTEs and ROW_NUMBER can be combined together which will ...READ MORE

Feb 10, 2022 in Database by Vaani
 • 7,070 points • 725 views
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1 answer

How to generate the statement CREATE TABLE for an existing table in postgreSQL?

Generate table creation statement for an existing ...READ MORE

Feb 9, 2022 in Database by Neha
 • 9,060 points • 6,402 views
0 votes
1 answer

How to rename a column in a database table using SQL?

For SQL Server, use sp_rename USE AdventureWorks; GO EXEC sp_rename 'Customers.CustomerTerritory.TerritoryID', ...READ MORE

Feb 9, 2022 in Database by Neha
 • 9,060 points • 666 views
0 votes
1 answer

SQL Server: PARTITION BY vs GROUP BY

To understand the differences between GROUP BY ...READ MORE

Feb 9, 2022 in Database by Neha
 • 9,060 points • 2,460 views
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1 answer

How Can I use "Date" Datatype in sql server?

There's problem in all of them and ...READ MORE

Feb 9, 2022 in Database by Neha
 • 9,060 points • 1,216 views
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1 answer

What are DDL and DML?

SQL Commands have subcategories like DDL, DML, DCL ...READ MORE

Feb 8, 2022 in Database by Vaani
 • 7,070 points • 846 views
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1 answer

SQL Server CASE .. WHEN .. IN statement

Two forms of CASE statements are getting ...READ MORE

Feb 8, 2022 in Database by Vaani
 • 7,070 points • 619 views
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1 answer

Convert Rows to columns using 'Pivot' in SQL Server

You can use the PIVOT function to ...READ MORE

Feb 8, 2022 in Database by Vaani
 • 7,070 points • 1,497 views
0 votes
1 answer

How would I find the second largest salary from a employee table? [closed]

To find the 2nd largest salary from ...READ MORE

Feb 8, 2022 in Database by Vaani
 • 7,070 points • 790 views
0 votes
1 answer

How to take user input in livesql.oracle.com in PLSQL?

To create a procedure with a parameter ...READ MORE

Feb 7, 2022 in Database by Vaani
 • 7,070 points • 4,018 views
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1 answer

SQL Switch/Case in 'where' clause

Without a case statement: SELECT column1, ...READ MORE

Feb 7, 2022 in Database by Vaani
 • 7,070 points • 1,280 views
0 votes
1 answer

SQL Server replaces LEFT JOIN for LEFT OUTER JOIN in view query

You are getting the joins confused and ...READ MORE

Feb 4, 2022 in Database by Neha
 • 9,060 points • 1,343 views
0 votes
1 answer

LEFT JOIN vs. LEFT OUTER JOIN in SQL Server

At the top level there are mainly ...READ MORE

Feb 4, 2022 in Database by Neha
 • 9,060 points • 1,871 views
0 votes
1 answer

How to drop all tables from a database with one SQL query?

Use the INFORMATION_SCHEMA.TABLES view to get the ...READ MORE

Feb 4, 2022 in Database by Neha
 • 9,060 points • 8,785 views
0 votes
1 answer

Ordering by the order of values in a SQL IN() clause

Use MySQL's FIELD() function: SELECT name, description, ... FROM ... WHERE id ...READ MORE

Feb 4, 2022 in Database by Neha
 • 9,060 points • 4,992 views
0 votes
1 answer

What is a stored procedure?

A stored procedure is a set of ...READ MORE

Feb 4, 2022 in Database by Neha
 • 9,060 points • 939 views
0 votes
1 answer

What is an index in SQL?

An index is used to speed up ...READ MORE

Feb 3, 2022 in Database by Vaani
 • 7,070 points • 574 views
0 votes
1 answer

How do I UPDATE from a SELECT in SQL Server?

MERGE INTO YourTable T USING ...READ MORE

Feb 3, 2022 in Database by Vaani
 • 7,070 points • 713 views
0 votes
1 answer

two back slash in SQL procedure with Regular expression

It's the escape prefix in regular expressions: ...READ MORE

Feb 2, 2022 in Database by Vaani
 • 7,070 points • 1,527 views
0 votes
1 answer

Updating multiple records in this year with information held in previous year.

Hello, For your query you can refer this:https://www.plus2net.com/sql_tutorial/sql_update.php Hope ...READ MORE

Nov 9, 2020 in Database by Niroj
 • 82,880 points • 756 views
0 votes
1 answer

How does Docker CLI connects with DB?

To connect Docker CLI with a Database, ...READ MORE

Oct 19, 2020 in Database by lyana
 • 694 views
0 votes
1 answer

/opt/mssql/bin/mssql-conf: command not found in Ubuntu 20.04

Hello @netwell, You need to have at least 3.25 ...READ MORE

Oct 19, 2020 in Database by Niroj
 • 82,880 points • 6,469 views
0 votes
1 answer

RDS Replica Showing Storage full where all the configuration are same

Hey, @Syeda, If you expect an increase in ...READ MORE

Sep 8, 2020 in Database by Gitika
 • 65,890 points • 1,322 views
0 votes
1 answer

error while Retrieving the subquery column in where condition to main query

Hello @Jyra, You should first pay attention to ...READ MORE

Sep 4, 2020 in Database by Niroj
 • 82,880 points • 1,169 views
0 votes
1 answer

My values in my codes aren't inserted into mySQL. I input 5 but it will show 0. Any ideas?

Hello, You can refer my corresponding sample web ...READ MORE

Jul 13, 2020 in Database by Niroj
 • 82,880 points • 907 views
0 votes
1 answer

How to set SSL to Domain name for MYSQL database

Hello @ Lakshminarayanan, Yes, It is possible to setup ...READ MORE

Jul 9, 2020 in Database by Niroj
 • 82,880 points • 1,278 views
0 votes
1 answer

I need query based on Timestamp in sqlserver

Hello  vnk, To get some familiarity try creating and ...READ MORE

Jun 30, 2020 in Database by Niroj
 • 82,880 points • 2,056 views
0 votes
1 answer

How to design data warehouse for support whole business?

Hi, @There, So here are a few steps ...READ MORE

Jun 1, 2020 in Database by Gitika
 • 65,890 points • 907 views
0 votes
1 answer

Generate mongod.conf for tarball installtion

Hi,@kailas, To run a mangod process as a daemon ...READ MORE

May 26, 2020 in Database by Gitika
 • 65,890 points • 1,011 views
0 votes
1 answer

How to detect a SQL table's existence in Java?

Hello, Depending on the DB, you can do ...READ MORE

May 13, 2020 in Database by Niroj
 • 82,880 points • 841 views
0 votes
1 answer

Error:Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]

Hii @kartik, I was also facing the same ...READ MORE

May 13, 2020 in Database by Niroj
 • 82,880 points • 6,668 views
0 votes
1 answer

Error:Cannot resolve the collation conflict between "SQL_Latin1_General_CP1_CI_AS" and "Arabic_CI_AS" in the equal to operation.

Hello @kartik, You can resolve the issue by ...READ MORE

May 13, 2020 in Database by Niroj
 • 82,880 points • 20,226 views
+1 vote
1 answer

How to migrate a PostgreSQL database into a SQLServer one?

Hello @kartik, The easier way to accomplish this. First ...READ MORE

May 13, 2020 in Database by Niroj
 • 82,880 points • 765 views
0 votes
1 answer

What to combine two tables into one.

Hii Nikola, I think you need to UNION ALL otherwise you ...READ MORE

May 21, 2020 in Database by Niroj
 • 82,880 points • 870 views
0 votes
1 answer

How can Mysql database sync between two databases?

Hii, Some simple rules you will have to ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 2,098 views
0 votes
1 answer

Why do we need Transaction in Hibernate for read-only operations?

Hello @kartik, It doesn't matter whether you only ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 2,756 views
0 votes
1 answer

How to take MySQL database backup using MySQL Workbench?

Hii, You can export like this: Hope this is ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 1,127 views
0 votes
1 answer

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

Hii, To schedule a job for sql query ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 3,902 views
0 votes
1 answer

How do I kill all the processes in Mysql “show processlist”?

Hello kartik, Mass killing operation saves time. Do it ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 2,445 views
0 votes
1 answer

How to empty a redis database?

Hello @kartik, You have two options: FLUSHDB - clears currently ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 793 views
0 votes
1 answer

Error Code: 2020. Lost connection to MySQL server during query

Hello @kartik, I got the same issue when ...READ MORE

May 4, 2020 in Database by Niroj
 • 82,880 points • 2,598 views
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