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SQL for joining two tables

What is the SQL statement that can be used to join two tables?

What is the SQL statement that can be used to join two tables?
You will be joining the two tables on one or more columns. In Oracle, I can code the join operation similar to the following:
SELECT tableA.columnA, tableA.columnB, tableB.columnX, tableB.columnY
FROM tableA, tableB
WHERE tableA.columnA = tableB.columnX AND tableA.columnB = tableB.columnY;
In the same above, the rows from the two tables are joined where ColumnA = ColumnX and ColumnB = ColumnY. You can code any join condition this way. Oracle also supports the ANSI SQL standard join syntax. The above query in ANSI SQL standard would look like the following:
SELECT tableA.columnA, tableA.columnB, tableB.columnX, tableB.columnY
FROM tableA INNER JOIN tableB
ON tableA.columnA = tableB.columnX AND tableA.columnB = tableB.columnY;
This was first published in March 2006

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