SELECT, WHERE, DISTINCT, UPDATE, DELETE IN SQL | SQL COURSE IN TELUGU FOR BEGINNERS -- Part 6
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SQL SELECT Statement
The `SELECT` statement in SQL is used to retrieve data from one or more tables in a database. It helps users fetch specific columns, filter records, sort results, and analyze stored information efficiently. SQL SELECT is one of the most commonly used commands for querying and managing database data.
SQL DISTINCT Statement
The `DISTINCT` keyword in SQL is used to remove duplicate records from query results and display only unique values. It helps improve data accuracy and simplifies reporting by filtering repeated entries from selected columns in a database table.
SQL WHERE Clause
The `WHERE` clause in SQL is used to filter records based on specific conditions. It allows users to retrieve only the required data from a database table by applying criteria such as values, ranges, patterns, or logical conditions.
UPDATE Statement
The `UPDATE` statement in SQL is used to modify existing records in a database table. It enables users to change one or multiple column values based on defined conditions, making it essential for maintaining accurate and updated database information.
SQL DELETE Statement
The `DELETE` statement in SQL is used to remove one or more records from a database table permanently. It helps manage unwanted or outdated data by deleting rows that match specific conditions using the WHERE clause.