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postgreSQL-clauses

10 posts

PostgreSQL - SELECT DISTINCT clause

Last Updated: 17 July 2024

The SELECT statement with the DISTINCT clause to remove duplicate rows from a query result set in PostgreSQL. By leveraging the DISTINCT clause, you can ensure your query ...read more

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PostgreSQL - ORDER BY clause

Last Updated: 19 September 2023

The PostgreSQL ORDER BY clause is used to sort the result query set returned by the SELECT statement. As the query set returned by the SELECT statement has no specific ord...read more

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PostgreSQL - WHERE clause

Last Updated: 11 October 2024

The PostgreSQL WHERE clause is a critical component of SQL queries, allowing users to filter records based on specified conditions. In this tutorial, we'll explore how the...read more

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PostgreSQL - LIMIT clause

Last Updated: 02 August 2024

The PostgreSQL LIMIT clause is a handy tool used to fetch a specific subset of rows returned by a query. This clause is optional and can be a powerful way to control the a...read more

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PostgreSQL - LIMIT with OFFSET clause

Last Updated: 30 October 2024

The PostgreSQL LIMIT clause is a powerful feature that allows users to retrieve a specific subset of rows from query results. This optional clause can be paired with the O...read more

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PostgreSQL FETCH Clause

Last Updated: 11 November 2024

The PostgreSQL FETCH clause is an essential feature for controlling and managing the number of rows returned in our SQL queries. It provides a standardized approach for li...read more

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PostgreSQL - GROUP BY clause

Last Updated: 13 November 2024

TheGROUP BYclause inPostgreSQLis an essential tool that allows us to group rows that share the same values in one or more columns. This powerful functionality is commonly ...read more

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PostgreSQL - HAVING clause

Last Updated: 19 November 2024

The HAVING clause in PostgreSQL is an essential feature for filtering grouped data that has been aggregated using functions like SUM(), COUNT(), AVG(), and others. Unlike ...read more

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PostgreSQL - DELETE USING

Last Updated: 25 October 2024

The PostgreSQL DELETE USING statement is a powerful and efficient way to delete duplicate rows from a table, especially when duplicates are based on specific conditions. T...read more

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PostgreSQL - Continue

Last Updated: 07 August 2024

The CONTINUE statement in PostgreSQL is used to prematurely skip the current iteration of a loop and proceed directly to the next iteration. This functionality applies to ...read more

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postgreSQL-clauses