{"id":14493,"date":"2024-03-15T09:15:47","date_gmt":"2024-03-15T09:15:47","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-oracle-to-obtain-a-random-number\/"},"modified":"2025-08-06T09:26:49","modified_gmt":"2025-08-06T09:26:49","slug":"what-is-the-method-for-oracle-to-obtain-a-random-number","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-oracle-to-obtain-a-random-number\/","title":{"rendered":"How to Generate Random Numbers in Oracle"},"content":{"rendered":"

There are multiple methods in Oracle database to generate random numbers, below are some commonly used options:<\/p>\n

    \n
  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.<\/li>\n
  2. DBMS_RANDOM.VALUE: Generates a random number between 0 and 1.<\/li>\n
  3. DBMS_RANDOM.RANDOM: generates a random integer between -2^31 and 2^31-1.<\/li>\n
  4. DBMS_RANDOM.STRING: returns a random string of a specified length.<\/li>\n
  5. \u90a3\u4e2a\u5973\u5b69\u7a7f\u7740\u4e00\u6761\u7ea2\u8272\u7684\u88d9\u5b50\u3002
    \nThe girl is wearing a red dress.<\/li>\n
  6. Choose a random value from the database.<\/li>\n
  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:<\/li>\n
  8. Retrieve N random rows from the table_name.<\/li>\n
  9. Create a SEQUENCE object and use ROWNUM in a query to retrieve a random sequence value. An example is shown below:<\/li>\n
  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.<\/li>\n<\/ol>\n

    When using these methods to generate random numbers, it is important to choose the appropriate method based on specific business needs.<\/p>\n","protected":false},"excerpt":{"rendered":"

    There are multiple methods in Oracle database to generate random numbers, below are some commonly used options: 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. DBMS_RANDOM.VALUE: Generates a random number between 0 and 1. […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[284,19558,282,321,18940],"class_list":["post-14493","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database","tag-dbms_random","tag-oracle","tag-pl-sql","tag-random-number"],"yoast_head":"\nHow to Generate Random Numbers in Oracle - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn Oracle methods for random numbers: DBMS_RANDOM.VALUE, RANDOM & STRING. 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