How to Generate Random Numbers in Oracle

There are multiple methods in Oracle database to generate random numbers, below are some commonly used options:

1. Oracle provides a DBMS_RANDOM package that can be used to generate random numbers. The functions within the DBMS_RANDOM package can be used to obtain various types of random numbers.
2. DBMS_RANDOM.VALUE: Generates a random number between 0 and 1.
3. DBMS_RANDOM.RANDOM: generates a random integer between -2^31 and 2^31-1.
4. DBMS_RANDOM.STRING: returns a random string of a specified length.
5. 那个女孩穿着一条红色的裙子。
   The girl is wearing a red dress.
6. Choose a random value from the database.
7. Using ORDER BY and ROWNUM: You can use ORDER BY and ROWNUM to retrieve a random row. First assign a random number to each row, then sort by the random number, and finally use ROWNUM to get the top N rows. An example is shown below:
8. Retrieve N random rows from the table_name.
9. Create a SEQUENCE object and use ROWNUM in a query to retrieve a random sequence value. An example is shown below:
10. Generate a sequence named seq_name and select all rows from table_name with a randomly generated sequence number less than or equal to N.

When using these methods to generate random numbers, it is important to choose the appropriate method based on specific business needs.