Data

SQL Clause Execution Order

Learn about the proper syntax structure and execution order for all of the SQL clauses.

Data

Union Data with UNION and UNION ALL

UNION and UNION ALL are set operators that combine results sets from multiple queries in order to aggregate and manipulate similar information.

Data

ORDER BY Clause

ORDER BY is a SQL query clause that allows you to sort raw data by various combinations of data attributes.

Data

LIMIT / OFFSET Clauses

LIMIT and OFFSET are SQL query clauses that allows you to limit and offset result records by the amount provided.

Data

HAVING Clause

The HAVING clause in SQL acts as a filtering mechanism similar to the WHERE clause, but for grouped columns and aggregate functions.

Data

GROUP BY Clause

GROUP BY is the first non-relational layer SQL query clause. It creates unique data groupings and allows for aggregations to be used.

Data

WHERE Clause

WHERE is a SQL query clause that allows you to filter raw data by various combinations of data attributes.

Data

FROM Clause

The FROM clause opens up your search query to accessing data tables within your database.

Data

SELECT Clause

SELECT is a foundational SQL clause that is mandatory to run queries. Learn more about SELECT with the start to my series on basic SQL queries.

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