What does the SQL JOIN clause do?OptionsSorts rows in a tableDeletes rows from a tableCombines rows from two or more tablesInserts rows into a table
Question
What does the SQL JOIN clause do?
Options:
- Sorts rows in a table
- Deletes rows from a table
- Combines rows from two or more tables
- Inserts rows into a table
Solution
Explanation of SQL JOIN Clause
The SQL JOIN clause is a powerful feature used to combine rows from two or more tables based on a related column between them. It allows for the retrieval of data that spans multiple tables, enabling complex queries that can bring insightful results. Here’s a breakdown of the provided options:
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Sorts rows in a table: This is incorrect. Sorting is usually performed using the ORDER BY clause.
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Deletes rows from a table: This is incorrect. Rows are deleted using the DELETE statement.
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Combines rows from two or more tables: This is the correct answer. The JOIN clause combines rows from different tables based on a related column.
-
Inserts rows into a table: This is incorrect. Rows are inserted using the INSERT INTO statement.
Final Answer
The SQL JOIN clause combines rows from two or more tables based on a related column.
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What does the SQL JOIN clause do?OptionsSorts rows in a tableDeletes rows from a tableCombines rows from two or more tablesInserts rows into a table
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The purpose of SQL joins is to combine rows from two or more tables based on a related column.a.Trueb.False
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