Most voted questions in Database

+2 votes
1 answer

How to export data from MySql to a CSV file?

If you are using MySql workbench then ...READ MORE

Jan 4, 2019 in Database by Priyaj
 • 58,020 points • 1,661 views
+2 votes
3 answers

Difference between SQL and PL/SQL

In Oracle database administration, there are two ...READ MORE

Sep 25, 2019 in Database by gautham
 • 1,615 views
+1 vote
0 answers

SQL: Two select statements in one query

I want to return the newly created ...READ MORE

Aug 20, 2022 in Database by Kithuzzz
 • 38,000 points • 6,117 views
+1 vote
1 answer

how to change format of date from mm/dd/yyyy to dd-mmm-yyyy in MS Excel

First, pick the cells that contain dates, ...READ MORE

Apr 11, 2022 in Database by gaurav
 • 23,260 points • 159,258 views
+1 vote
1 answer

Excel convert column to comma separated

The CONCATENATE function in Excel can transform ...READ MORE

Apr 6, 2022 in Database by gaurav
 • 23,260 points • 185,309 views
+1 vote
1 answer

How to Insert date value in SQL table

Always use ANSI default string literal format for date i.e. YYYY-MM-DD like below. INSERT ...READ MORE

Feb 17, 2022 in Database by Neha
 • 9,020 points • 180,453 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
 • 82,840 points • 1,140 views
+1 vote
0 answers

What are the advantages of SQL? [closed]

Dec 28, 2019 in Database by Yuth
 • 130 points
closed Dec 30, 2019 by Kalgi • 1,118 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 • 1,120 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 • 1,118 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
 • 8,250 points • 6,224 views
+1 vote
1 answer

What are the data types in MySQL?

The Data Types of MySQL are as ...READ MORE

Dec 12, 2018 in Database by DataKing99
 • 8,250 points • 3,374 views
+1 vote
1 answer

What is the AND operator?

The AND operator is used to filter ...READ MORE

Dec 1, 2018 in Database by Sahiti
 • 6,370 points • 1,500 views
+1 vote
2 answers

List few commands of DDL, DML, and DCL.

The list of commands is as follows:  Data ...READ MORE

Nov 12, 2018 in Database by Sahiti
 • 6,370 points • 120,476 views
+1 vote
1 answer

Difference between cross join and natural join

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

Oct 12, 2018 in Database by DataKing99
 • 8,250 points • 16,643 views
+1 vote
1 answer

DELETE vs TRUNCATE vs DROP command

After the execution of ‘DELETE’ operation, COMMIT ...READ MORE

Aug 23, 2018 in Database by CodingByHeart77
 • 3,750 points • 2,049 views
+1 vote
1 answer

Cursor and Its Types

The cursor is a temporary work area ...READ MORE

Aug 9, 2018 in Database by CodingByHeart77
 • 3,750 points • 1,054 views
0 votes
0 answers

Why is the object value not updating in MongoDB?

Why is the object value not updating ...READ MORE

Nov 26, 2024 in Database by Nidhi
 • 6,040 points • 78 views
0 votes
0 answers

what kind of a nosql store is azure table storage

what kind of a nosql store is ...READ MORE

Dec 15, 2023 in Database by Priyanka
 • 4,500 points • 642 views
0 votes
0 answers

Create a SQL enter script from an Excel worksheet

I have a large excel worksheet that ...READ MORE

Sep 8, 2023 in Database by Satyawrat
 • 460 points • 623 views
0 votes
0 answers

Get json object values and store as arrays

[ ['david','female','john','e6a33eee180b07e563d74fee8c2c66b8',1,1,'roger63'], ...READ MORE

Nov 16, 2022 in Database by Ashwini
 • 5,430 points • 1,613 views
0 votes
0 answers

Can PHP arrays hold items of different type?

The definition of an array in other ...READ MORE

Nov 16, 2022 in Database by Ashwini
 • 5,430 points • 877 views
0 votes
1 answer

ERROR 1064 (42000): You have an error in your SQL syntax;

It is varchar and not var_char CREATE DATABASE IF NOT EXISTS ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 9,307 views
0 votes
1 answer

Delete all the records

You can use this if you have ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 882 views
0 votes
1 answer

How can I create a unique constraint on my column (SQL Server 2008 R2)?

The "indexes and keys" dialogue, not the ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 1,006 views
0 votes
1 answer

Using ORDER BY and GROUP BY together

Correctly use the  group by: select l.* from table ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 773 views
0 votes
1 answer

IN Clause with NULL or IS NULL

An in statement will be parsed identically to field=val1 or ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 758 views
0 votes
1 answer

What is the difference between a primary key and a surrogate key?

The unique key in your database that ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 8,090 views
0 votes
1 answer

How do I obtain a Query Execution Plan in SQL Server?

There are several ways to get an ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 1,457 views
0 votes
1 answer

How to retrieve the current version of a MySQL database management system (DBMS)?

Many responses advise using mysql —version. But ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 769 views
0 votes
1 answer

How do I do multiple CASE WHEN conditions using SQL Server 2008?

There are three formats of the case expression. ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 2,239 views
0 votes
1 answer

java.sql.SQLException: Column count doesn't match value count at row 1

I think PreparedStatement would be a better choice. I ...READ MORE

Sep 20, 2022 in Database by narikkadan
 • 63,600 points • 2,305 views
0 votes
1 answer

INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server

Your table dbo.Sup Item Cat refers to ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 8,775 views
0 votes
1 answer

Escape Character in SQL Server

You can escape quotation like this: select 'it''s ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 1,124 views
0 votes
1 answer

Function to Calculate Median in SQL Server

Use a simple-ish median calculation for a ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 1,565 views
0 votes
1 answer

Highest Salary in each department

SELECT DeptID, MAX(Salary) FROM EmpDetails GROUP BY ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 2,286 views
0 votes
1 answer

SQL Server: IF EXISTS ; ELSE

Try this: update b set code = ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 4,030 views
0 votes
1 answer

Best way to do nested case statement logic in SQL Server

Try some sort of COALESCE trick: SELECT COALESCE( ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 7,705 views
0 votes
1 answer

How can I set an SQL Server connection string?

.NET DataProvider -- Standard Connection with username ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 727 views
0 votes
1 answer

What does SELECT COUNT(1) from table_name on any database table mean

An expression to be tested for each ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 787 views
0 votes
1 answer

How to find third or nᵗʰ maximum salary from salary table?

Use ROW_NUMBER(if you want a single) or DENSE_RANK(for all ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 1,181 views
0 votes
1 answer

How to check SQL Server version

Connect to the instance of SQL Server, ...READ MORE

Sep 19, 2022 in Database by narikkadan
 • 63,600 points • 955 views
0 votes
1 answer

Is there a combination of "LIKE" and "IN" in SQL?

There is no LIKE & IN combination ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 4,689 views
0 votes
1 answer

How to format datetime in SQL SERVER

In SQL Server 2012 and up you ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 1,039 views
0 votes
1 answer

How to upsert (update or insert) in SQL Server 2005

Try to check for existence: IF NOT EXISTS ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 734 views
0 votes
1 answer

How to find top three highest salary in emp table in oracle?

Use this: SELECT *FROM ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 9,543 views
0 votes
1 answer

Why do I need to configure the SQL dialect of a data source?

Dialect is defined as "a language's variety." ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 1,376 views
0 votes
1 answer

SQL like search string starts with

SELECT * from games WHERE (lower(title) LIKE ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 4,190 views
0 votes
1 answer

Not equal <> != operator on NULL

Standard SQL-92 is represented by >; its ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 917 views
0 votes
1 answer

Multiple SQL Joins error in W3Schools Tryit Editor

I'm ruining this query on w3school even ...READ MORE

Sep 18, 2022 in Database by narikkadan
 • 63,600 points • 1,950 views
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