Temporary Table in SQL
Temporary Table in SQL. What is Temporary Table in SQL? How to create a temporary Table in SQL? As the name describes , a temporary table is a table created to store temporary data in the database. You can perform SQL operations similar to the permanent table, such as CREATE, UPDATE, DELETE, INSERT, JOIN and more. Temporary tables are automatically deleted when the current client session is terminated. If needed, you can also explicitly delete a temporary table within the session.
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
How to Show Tables in SQL
SHOW Table command in SQL | how to show all tables in a database | list of all user define tables in SQL | show tables in MYSQL, SQL Server and Oracle | retrieve list of all database tables in relational database.
DROP DATABASE in SQL
The SQL DROP DATABASE statement is a powerful command in SQL that is used to permanently delete an existing database from a system, including all its data, tables, views, indexes, stored procedures , constraints and any other elements that belong to it. Once executed, the database and all its contents are permanently deleted and cannot be recovered unless a backup is available. This command should be used with caution, because it permanently deletes the database and all its contents.
CREATE Database in SQL
A database is an organized collection of data stored in a computer system, designed to facilitate efficient data storage and retrieval. Different query languages can be used to create and manage databases and SQL is one such language. Creating a database in SQL is one of the first steps in setting up a structured environment to store and manage data efficiently. After creating a database you can start creating tables, views, stored procedures and other database objects within it.
JOIN in SQL
Join in SQL, JOIN is an SQL operation that combines data from two or more tables based on relationships between columns. JOIN is the most powerful features of SQL to combine data from multiple tables. In this article, we will explore what SQL JOINs are, syntax of SQL JOIN, type of SQL JOINs ( inner join , left join , right join etc), Key Characteristics of SQL JOIN etc
LIKE Operator in SQL
LIKE is an operator. SQL like query syntax. LIKE operator is used in SQL to match a specified pattern within a column containing text data. LIKE supports the use of wildcard characters ( % and _) for pattern matching. Mastering the LIKE operator enhances the ability to perform complex searches, retrieve targeted data, and extract valuable insights from datasets.
AVG in SQL
AVG in SQL Syntax : AVG(colum_name) or AVG(expression). how to compute avg in SQL? AVG function is a aggregate function that is designed to compute the average of specified column or expression. AVG operates on numeric data types (integer, decimal, floating-point) and AVG is particularly useful for performing aggregate calculations across datasets. This article provides a detailed overview of AVG aggregate function with example.
SUM in SQL
SUM in SQL Syntax : SUM(colum_name). SUM function is a aggregate function that is designed to compute the sum or total of values within a specified column or expression. SUM operates on numeric data types (integer, decimal, floating-point) and SUM is particularly useful for performing aggregate calculations across datasets. This article provides a detailed overview of count aggregate functions with example.