Technically, it returns the result set of a query without WHERE-Clause. As per SQL concern and advancement, there are 3-types of joins and all RDBMS joins can be achieved using these types of …

Sep 2, 2008 · Inner joins (or what is the default when using only "join") is a join where only the elements that match the criteria are present on both tables. The "outer" joins are the same as the inner join …

An SQL JOIN clause is used to combine rows from two or more tables, based on a common field between them. There are different types of joins available in SQL: INNER JOIN: returns rows when …

Dec 22, 2012 · SELECT A.Colour, B.Colour FROM A LEFT OUTER JOIN B ON A.Colour = B.Colour SQL Fiddle Outer Joins are logically evaluated in the same way as inner joins except that if a row …

If a filter enters in a JOIN condition functionally (i.e. it is an actual join condition, not just a filter), it must appear in the ON clause of that join. Worth noting: If you place it in the WHERE clause instead, the …

SQL INNER JOIN The SQL JOIN clause allows you to associate rows that belong to different tables. For instance, a CROSS JOIN will create a Cartesian Product containing all possible combinations of …

Nov 1, 2013 · Instead of one join with OR it turned into three joins. With each condition in a seprate join and a final join to get that one matching row from either first or second join.

Apr 21, 2012 · 62 Instead, you simply JOIN to both tables, and in your SELECT clause, return data from the one that matches: I suggest you to go through this link Conditional Joins in SQL Server and T …

SELECT * FROM table INNER JOIN otherTable ON table.ID = otherTable.FK Is there any difference between the statements in performance or otherwise? Does it differ between different SQL …

This contradicts what I linked to in my answer, which is an excerpt from Oracle Database 10g SQL (Osborne ORACLE Press Series) 1st edition (February 20, 2004), stating: "In a left outer join, the …