SQL Tutorials

This website provides a SQL server, SSRS, Power BI, Python, Azure basics and advanced tutorials for beginners and professionals .

You will find out a step-by-step walk through of the basics and advanced topics with practical and include numerous hands-on activities.

SQL TRUNCATE TABLE

SQL TRUNCATE TABLE statement is used to delete complete data from an existing table. It is similar to a delete statement without a WHERE clause.

Primary Key VS Composite Key?

A PRIMARY KEY constraint uniquely identifies each record in a table .

A COMPOSITE KEY is a combination of two or more columns in a table that can be used to uniquely identify each row in the table when the columns are combined uniqueness is guaranteed, but when it taken individually it does not guarantee uniqueness.

SQL CREATE TABLE

SQL CREATE TABLE statement is used to create a new table in a database.

SQL SELECT INTO SELECT

SQL SELECT INTO statement copies data from one table into new table.

SQL INSERT INTO SELECT

SQL INSERT INTO SELECT statement selects data from one table and insert it into another table.

SQL SERVER DISTINCT

SQL SERVER DISTINCT keyword is used to remove all the duplicate records and fetching only unique records from any table.

SQL Server SELECT

SQL server SELECT Statement is used to fetch the data from any table .

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SQL Tutorials

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