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I have three tables. Table 1 has 1 record, and joins to Table 2 on an field called ID which has 5 records. Table 2 joins to Table 3, which has 1 record. The only reason I'm linking in table 2 is ...
The INNER JOINS: Matching records only In December 2001’s “Another crash course in SQL,” I showed you one way to extract information from two tables in one statement.
In a three-way join, the sql-expression consists of two conditions: one relates the first table to the second table and the other relates the second table to the third table.
Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.
A join combines two or more tables side by side. If you do not specify how to join the tables, you get a Cartesian product. This means that SQL combines each row from the first table with every row ...
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