Table A and Table B are to be joined in a query.Which type of join will include all rows from tables A and B in the result?
Question
Table A and Table B are to be joined in a query.Which type of join will include all rows from tables A and B in the result?
Solution
The type of join that will include all rows from both Table A and Table B in the result is called a Full Outer Join.
Here are the steps to perform a Full Outer Join:
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Start by specifying the two tables that you want to join in the FROM clause. In this case, it would be Table A and Table B.
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Next, specify the type of join you want to use. In this case, it would be FULL OUTER JOIN.
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Then, specify the condition for the join in the ON clause. This condition determines how the two tables are related to each other. For example, if both tables have a column named 'ID', you could use 'ON TableA.ID = TableB.ID' as the condition.
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Finally, specify the columns you want to include in the result in the SELECT clause. If you want to include all columns from both tables, you can use 'SELECT *'.
So, the final query would look something like this:
SELECT * FROM TableA FULL OUTER JOIN TableB ON TableA.ID = TableB.ID;
This query will return all rows from both Table A and Table B, and combine them based on the condition specified in the ON clause. If a row from either table does not have a matching row in the other table, the result will include NULL values for all columns of the table that does not have a match.
Similar Questions
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