PostgreSQL
PostgreSQL is a free, open source relational database management system. It was initially developed as a successor of the Ingres database
Top PostgreSQL Articles
How to Truncate a Table in SQL
TRUNCATE Table command in SQL | how to TRUNCATE TABLE in a database | how to TRUNCATE TABLE in SQL | TRUNCATE TABLE in MYSQL, SQL Server and Oracle
How to Rename a Tables in SQL
Rename Table command in SQL | how to rename a table in a database | how to rename a table in SQL | rename tables in MYSQL, SQL Server and Oracle
COUNT in SQL
Count in SQL Syntax : count(*) or count(colum_name). Count function are aggregate function that operate on group of data based on specific criteria and return the number of rows. count is commonly used with the SELECT. This article provides a detailed overview of count aggregate functions with example.
UPDATE Statement in SQL
UPDATE Syntax. The UPDATE statement is used to modify the existing records in database table. when you want to update one or more records into the database table you should use SQL update query. SQL UPDATE query allows you to change the values of one or more columns in a specified table based on a condition.
INSERT INTO in SQL
INSERT INTO Syntax. INSERT INTO statement is used to insert new records into the table. when you want to insert new records into the database table you should use insert into statement . It is possible to write the INSERT INTO statement in two ways ...
ORDER BY clause in SQL
ORDER BY clause in SQL is used to order of selected data in ascending or descending order of certain columns . order by is used to order data as per your requirement.
SELECT DISTINCT Query in SQL
Select distinct query in SQL is used to fetch distinct data from database. you can fetch data based on certain conditions (where clause) and apply other SQL operation like ordering , grouping etc with select distinct.
SELECT Query in SQL
Select query in sql is used to fetch data from database. you can fetch data based on certain conditions (where clause) and apply other sql operation like ordering , grouping etc.
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MySQL is an open-source relational database management system
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Popular Articles
install mysql by docker. docker mysql server installation. MySQL is one of the most popular open-source relational database management systems. Docker container is a great way to manage and deploy databases in a portable and isolated environment. In this article, we will walk through the steps by step to install and run MySQL in Docker.
How to create Primary Key. Creating Primary Key syntax. A Primary Key is a database constraint that ensures uniqueness records in the table. Primary Key guarantees no two rows can have the same value in the primary key column(s). The Primary Key not only ensures uniqueness but also improves data access speed and is used to establish relationships between tables.
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You are given two integer arrays arr1 and arr2, sorted in accending order, and two integers m and n, representing the number of elements in arr1 and arr2 respectively. Merge arr1 and arr2 into a single array sorted in accending order.
Top 50 SQL Interview Questions and Answers (Beginner to Intermediate). Top SQL Interview Questions for fresher. Frequently asked SQL interview questions with answers
Length of the Longest Substring Without Repeating Characters | Given a string str find the length of the longest substring without repeating characters | find the length of the longest substring without repeating characters in a given string |
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