Most voted questions in Database

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Deleting duplicate rows in Excel using Epplus

You need to re-think this… the while ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 1,686 views
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1 answer

How to sort dates from Oldest to Newest in Excel?

Drag down the column to select the ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 5,402 views
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SQL: Display Full Name + Filter By Subject

Feb 22, 2022 in Database by Neha
 • 9,020 points • 349 views
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Insert into ... values ( SELECT ... FROM ... )

Try: INSERT INTO tableA ( column_1 ) SELECT ...READ MORE

Feb 23, 2022 in Database by Neha
 • 9,020 points • 1,821 views
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1 answer

How to convert DateTime to VarChar

With Microsoft Sql Server: -- -- Create test case -- DECLARE ...READ MORE

Feb 23, 2022 in Database by Neha
 • 9,020 points • 1,333 views
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1 answer

What is the Oracle PL/SQL "--+rule"?

The answer is in the material you ...READ MORE

Feb 23, 2022 in Database by Neha
 • 9,020 points • 2,283 views
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1 answer

What is the candidate key in SQL Server?

A Candidate Key is any column or ...READ MORE

Feb 23, 2022 in Database by Neha
 • 9,020 points • 4,451 views
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What is "with (nolock)" in SQL Server?

Can someone explain the ramifications of using ...READ MORE

Feb 22, 2022 in Database by Vaani
 • 7,070 points • 691 views
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1 answer

Date difference: different results in Excel vs. Python

To calculate the date difference, we can ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 1,239 views
0 votes
1 answer

Convert a number to a letter in C# for use in Microsoft Excel [duplicate]

If you are familiar with using formulas ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 1,018 views
0 votes
1 answer

Excel - Split cell with a delimiter and if delimiter not found get complete cell value to another cell

Select the row or column that you ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 823 views
0 votes
1 answer

Excel feet and inches to millimeters

There are certain direct formulas to convert ...READ MORE

Feb 23, 2022 in Database by gaurav
 • 23,260 points • 2,075 views
0 votes
1 answer

SQL SELECT WHERE field contains words

Use this query to include any of words: SELECT * ...READ MORE

Feb 21, 2022 in Database by Neha
 • 9,020 points • 20,154 views
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1 answer

SQL count rows in a table

A fast way of doing this would ...READ MORE

Feb 21, 2022 in Database by Neha
 • 9,020 points • 813 views
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1 answer

How to find 3rd highest salary in SQL

select max(salary)from employeeposition where salary <(select max(salary)from employeeposition where ...READ MORE

Oct 27, 2023 in Database by anonymous
edited Mar 5 • 53,836 views
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1 answer

What is "with (nolock)" in SQL Server?

Using READ UNCOMMITED as a transaction isolation ...READ MORE

Feb 21, 2022 in Database by Neha
 • 9,020 points • 811 views
0 votes
1 answer

Reading Excel File using Python, how do I get the values of a specific column with indicated column name?

So the key parts are to grab ...READ MORE

Feb 21, 2022 in Database by gaurav
 • 23,260 points • 4,946 views
0 votes
1 answer

Change default 'delimiters' in excel

Select a non-empty cell. Do Data -> Text ...READ MORE

Feb 21, 2022 in Database by gaurav
 • 23,260 points • 2,050 views
0 votes
1 answer

Merging Two excel files as two sheets in one workbook in java

Basically for this, you need to create ...READ MORE

Feb 21, 2022 in Database by gaurav
 • 23,260 points • 1,186 views
0 votes
1 answer

Group by Sum in Excel

It is very easy and you can ...READ MORE

Feb 21, 2022 in Database by gaurav
 • 23,260 points • 666 views
0 votes
1 answer

How do I use ROW_NUMBER()?

You can use the query as: SELECT COUNT(*) ...READ MORE

Feb 21, 2022 in Database by Vaani
 • 7,070 points • 624 views
0 votes
1 answer

How can I define a composite primary key in SQL?

A primary key is unique and it ...READ MORE

Feb 21, 2022 in Database by Vaani
 • 7,070 points • 1,494 views
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What is the definition of cardinality in SQL?

My book definition of Database Systems does ...READ MORE

Feb 18, 2022 in Database by Neha
 • 9,020 points • 879 views
0 votes
1 answer

How to insert date values into table?

You have to convert the literal to ...READ MORE

Feb 18, 2022 in Database by Vaani
 • 7,070 points • 3,549 views
0 votes
1 answer

What is the difference between HAVING and WHERE in SQL?

HAVING: It is used to check after the aggregation ...READ MORE

Feb 17, 2022 in Database by Vaani
 • 7,070 points • 885 views
0 votes
1 answer

Function vs. Stored Procedure in SQL Server

Functions are calculated values that cannot make ...READ MORE

Feb 17, 2022 in Database by Neha
 • 9,020 points
edited Feb 17, 2022 by Neha • 19,515 views
0 votes
1 answer

SQL WITH clause example

Oracle introduced the SQL WITH clause in ...READ MORE

Feb 17, 2022 in Database by Neha
 • 9,020 points • 533 views
0 votes
1 answer

What is the difference between SQL, PL-SQL and T-SQL?

SQL SQL is the standard language for relational ...READ MORE

Feb 16, 2022 in Database by Vaani
 • 7,070 points • 1,027 views
0 votes
1 answer

Difference between datetime and timestamp in sqlserver?

Timestamp is a synonym for rowversion, according ...READ MORE

Feb 16, 2022 in Database by Vaani
 • 7,070 points • 5,138 views
0 votes
1 answer

How do I perform an IF THEN statement in an SQL SELECT?

The CASE statement is the closest to IF in ...READ MORE

Feb 16, 2022 in Database by Vaani
 • 7,070 points • 1,835 views
0 votes
1 answer

Is SQL syntax case sensitive?

The SQL keywords (SELECT, FROM, WHERE, etc.) ...READ MORE

Feb 16, 2022 in Database by Vaani
 • 7,070 points • 11,595 views
0 votes
1 answer

Syntax of for-loop in SQL Server

TSQL has no for-loop, we have only ...READ MORE

Feb 15, 2022 in Database by Neha
 • 9,020 points • 995 views
0 votes
1 answer

How to do version control for SQL Server database?

Not only can you compare objects at ...READ MORE

Feb 15, 2022 in Database by Neha
 • 9,020 points • 731 views
0 votes
1 answer

SQL error "ORA-01722: invalid number"

When an effort is made to convert ...READ MORE

Feb 15, 2022 in Database by Neha
 • 9,020 points • 3,359 views
0 votes
1 answer

What is the definition of cardinality in SQL?

Cardinality is defined as the "number of ...READ MORE

Feb 15, 2022 in Database by Neha
 • 9,020 points • 1,987 views
0 votes
0 answers

Selecting COUNT(*) with DISTINCT

In SQL Server 2005, I have a ...READ MORE

Feb 14, 2022 in Database by Neha
 • 9,020 points • 578 views
0 votes
1 answer

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 • 3,125 views
0 votes
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 • 543 views
0 votes
1 answer

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 • 1,464 views
0 votes
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
 • 9,020 points • 8,429 views
0 votes
1 answer

NOT IN vs NOT EXISTS

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

Feb 11, 2022 in Database by Neha
 • 9,020 points • 647 views
0 votes
1 answer

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
 • 9,020 points • 1,592 views
0 votes
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 • 594 views
0 votes
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 • 1,135 views
0 votes
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 • 761 views
0 votes
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 • 921 views
0 votes
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
 • 9,020 points • 6,895 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
 • 9,020 points • 888 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
 • 9,020 points • 2,685 views
0 votes
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
 • 9,020 points • 1,484 views
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