{"id":5441,"date":"2024-03-14T02:50:51","date_gmt":"2024-03-14T02:50:51","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-convert-oracle-characters-to-numbers\/"},"modified":"2025-08-01T15:09:06","modified_gmt":"2025-08-01T15:09:06","slug":"how-to-convert-oracle-characters-to-numbers","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-convert-oracle-characters-to-numbers\/","title":{"rendered":"Oracle TO_NUMBER: Convert Characters to Numbers"},"content":{"rendered":"

In Oracle database, we can use the TO_NUMBER() function to convert character data type to numeric data type. Here are some detailed information about the TO_NUMBER() function:<\/p>\n

    \n
  1. Syntax: TO_NUMBER(expression, format_mask)<\/li>\n
  2. Parameters:\n

    expression: The expression or field to be converted to a number
    \nformat_mask: Optional parameter used to specify the format of the input string. If not provided, the default number format from the database session settings will be used.<\/li>\n

  3. Return value: The TO_NUMBER() function returns a numerical value.<\/li>\n
  4. Warning: When converting characters to numbers, make sure that the input characters can be correctly converted to numbers, otherwise it will result in a failed conversion and an error message.<\/li>\n<\/ol>\n

    For example, in Oracle SQL, you can use the TO_NUMBER() function to convert a character into a number.<\/p>\n

    SELECT TO_NUMBER('12345') AS number_value\r\nFROM dual;\r\n<\/code><\/pre>\n
    The query will convert the characters ‘12345’ into the number 12345 and output it as the result.<\/p>\n
    In addition, if you need to process a string containing non-numeric characters, you can combine other functions to clean the string first, and then use the TO_NUMBER() function for conversion. For example, you can use the REGEXP_REPLACE() function to remove non-numeric characters.<\/p>\n
    SELECT TO_NUMBER(REGEXP_REPLACE('abc123def', '[^0-9]', '')) AS number_value\r\nFROM dual;\r\n<\/code><\/pre>\n
    The query above removes non-numeric characters from the string ‘abc123def’ and then converts it to a number.<\/p>\n","protected":false},"excerpt":{"rendered":"
    In Oracle database, we can use the TO_NUMBER() function to convert character data type to numeric data type. Here are some detailed information about the TO_NUMBER() function: Syntax: TO_NUMBER(expression, format_mask) Parameters: expression: The expression or field to be converted to a number format_mask: Optional parameter used to specify the format of the input string. If […]<\/p>\n","protected":false},"author":14,"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":[5893,90,5894,5038,5892],"class_list":["post-5441","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-convert-characters-to-numbers","tag-database-programming","tag-oracle-data-conversion","tag-oracle-sql-functions","tag-oracle-to_number"],"yoast_head":"\nOracle TO_NUMBER: Convert Characters to Numbers - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use Oracle TO_NUMBER function to convert character data to numeric format. 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