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How to select N random records from an Oracle table If you want to select N random records from an Oracle table, you need to change the clause as follows: select * from ( select* from tableName order by dbms_random value ) where rownum <= N; For example, to select 5 random customers in the customers table, you use the following query: select * from ( select* from customers order by dbms_random
sql - Selecting a Random Row in Oracle - Stack Overflow I need to randomly select values from one table, e g tableA a_id which is a VARCHAR2, and use the value to insert into another table For instance, assuming three columns needs to be inserted into 100 rows of tableX (a sequence number, a random number between 100 and 999, and values of tableA a_id):
Oracle Live SQL - Script: A Row Generator select rownum, 'Row : ' || rownum, dbms_random string('X',25), 'abc' , (sysdate-100)+rownum from dual connect by level < 10 order by rownum
How to select random records from a database - Open Tech Guides In this tutorial you will learn how to retrieve a set of random records from a database table in MySQL, Oracle and Microsoft SQL Server You'll also learn how to retrieve random documents from a collection in MongoDB database