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What is the SQL keyword used to specify the number of rows to retrieve from a result set?OptionsROWSOFFSETLIMITTOP

Question

What is the SQL keyword used to specify the number of rows to retrieve from a result set?

Options:

  • ROWS
  • OFFSET
  • LIMIT
  • TOP
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Solution

To specify the number of rows to retrieve from a result set in SQL, you can use the keyword LIMIT or TOP, depending on the database system being used.

  1. LIMIT: This keyword is commonly used in MySQL and PostgreSQL. For example, SELECT * FROM table_name LIMIT 10; retrieves the first 10 rows from the result set.

  2. TOP: This keyword is used in SQL Server. For instance, SELECT TOP 10 * FROM table_name; also retrieves the first 10 rows from the result set.

  3. ROWS and OFFSET are used primarily in conjunction with pagination in some SQL dialects, such as in PostgreSQL or SQL Server with the OFFSET clause: SELECT * FROM table_name ORDER BY column_name OFFSET 0 ROWS FETCH NEXT 10 ROWS ONLY;.

In summary, the correct answer depends on the SQL dialect you are using: LIMIT for MySQL/PostgreSQL or TOP for SQL Server.

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