over 4 years ago
<-- Chapter 21: SQL Injection
SQL Select Top clause is used to retrieve TOP N number of Records or X percent of Records from database table.
Note: All database systems does not support the SELECT TOP clause.
Lets see an example from the below table "employees" :-
SELECT TOP SQL syntax :-
Following is an example of SQL Server
SELECT TOP 3 *
Now run the above SQL query, we will see the output below :-
Now we can see here, Top 3 Rows are displayed.
SELECT TOP PERCENT SQL syntax :-
Following is an example of MYSQL
If we are using ORACLE, Following is an example :-
WHERE ROWNUM <= 3;
SELECT TOP 50 PERCENT *
Now we can see here, Top 50 Percent Rows are displayed.
Chapter 23: SQL Wildcards -->
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