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How to Use FETCH Clause in PostgreSQL

PostgreSQL provides a FETCH clause that is used to fetch/retrieve a part of rows returned by any query. It performs the same functionality as the LIMIT clause.

How to Use the Truncate Table Command in PostgreSQL

PostgreSQL provides several methods for truncating a specific table. The TRUNCATE TABLE command is one of them. It can be executed from the psql and pgAdmin.

How to Use BETWEEN Operator in PostgreSQL

In PostgreSQL, the BETWEEN operator is used to find a match against a range of values in SELECT, UPDATE, INSERT or DELETE queries.

How to Use IN Operator in PostgreSQL

In PostgreSQL, the IN operator is used with the collaboration of the WHERE clause to check the existence of a particular value in a list of values.

How to Use HAVING Clause in PostgreSQL

In Postgres, the HAVING clause is mostly used with the GROUP BY clause to filter the group/aggregate based on some specific condition.

How to Use DISTINCT Keyword in PostgreSQL

In PostgreSQL, the DISTINCT keyword/clause is used within the SELECT statement to fetch the unique records from the result-set.

How to Use ORDER BY Clause in PostgreSQL

In PostgreSQL, specify the ORDER BY clause and column name followed by the ASC or DESC to sort the result set in ascending or descending order, respectively.

How to Use DELETE Query in PostgreSQL

In PostgreSQL, the DELETE query can be used with or without the WHERE clause to delete a single, multiple, or all the rows of a specific table.

How to Use Update Query in PostgreSQL

In PostgreSQL, the UPDATE query is used with the assistance of the SET clause to update or modify the table’s record/data.

How to Use Select Query in PostgreSQL

The SELECT statement is used to fetch one or more columns of a table. It returns a resultant table which is known as the result set or result table.