In SQLite, the UNION operator creates a compound SELECT statement that returns the results of the left and right SELECT statements. In other words, it combines the results from two queries into a single result set.
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MySQL TABLE Statement
In MySQL, the TABLE statement returns rows and columns of the given table.
The TABLE statement is similar to the SELECT statement, and it can be used as a kind of shorthand version of the SELECT statement.
The TABLE statement was introduced in MySQL 8.0.19.
VALUES Statement in MySQL
In MySQL, the VALUES statement returns a set of one or more rows as a table. Basically, it’s a table value constructor in accordance with the SQL standard, which also functions as a standalone SQL statement.
The VALUES statement was introduced in MySQL 8.0.19.
MySQL UNION Clause
In MySQL, the UNION clause combines the results from multiple queries into a single result set.
Oracle MINUS Operator Explained
In Oracle Database, the MINUS operator is used to return only unique rows returned by the first query but not by the second.
How UNION Works in PostgreSQL
In PostgreSQL, the UNION operator combines the results from multiple queries into a single result set.
How INTERSECT Works in PostgreSQL
In PostgreSQL, the INTERSECT operator combines two queries, but returns only those rows that are returned in both queries.