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SELECT a.field1, b.field2 FROM table1 a, table2 b WHERE a.id=b.fk_code;The above will join two tables together on the defined join condition (the WHERE clause). One of the criticisms of Oracle was that the join syntax above is not compliant with the widely accepted ANSI SQL standard syntax. An ANSI-compliant join statement similar to the above will look like the following:
SELECT a.field1, b.field2 FROM table1 a INNER JOIN table2 b ON a.id=b.fk_code;The two statements will return identical results. A developer who creates applications for Oracle and other ANSI-compliant database platforms can now use the same syntax in each. ANSI-compliant joins were first available in Oracle 9i.
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