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
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.
-
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. -
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. -
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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