What is the length of number in oracle
The Oracle NUMBER data type has a maximum length of 38 bits, including the decimal point and decimal places: 38 bits for the integer part and 128 bits for the fractional part. Precision is the number of digits that can be stored after the decimal point and ranges from 0 to 128. When choosing the appropriate length, consider data range, accuracy requirements, and storage space.
The length of the NUMBER data type in Oracle
The NUMBER data type is used to store numeric values in the Oracle database Common data type. Its length can vary depending on the size and precision requirements of the data.
Maximum length
The maximum length of the NUMBER data type is 38 bits, including the decimal point and decimal places:
- 38-bit integer part
- 128 decimal places
Precision and range
Precision refers to the number of digits that can be stored after the decimal point. The number of decimal places can range from 0 to 128.
The NUMBER data type supports the following range:
- Maximum value: 99999999999999999999999999999999999999999999999999.99
- Minimum value: -99999999999999999 999999999999999999999999999999999999.99
Precision Example
- NUMBER(10,2): Can store a number with up to 8 digits for the integer part and 2 digits for the decimal part after the decimal point.
- NUMBER(18,0): Can store up to 18-digit integer part, no decimal part.
Choose the appropriate length
When choosing the appropriate length for the NUMBER data type, you should consider the following factors:
- Data range: Whether the data value may exceed the maximum or minimum value.
- Precision requirements: How many decimal places need to be stored.
- Storage space: The longer the data type, the greater the storage space.
Note:
- The length of the NUMBER(p,s) data type is p s 1, where p is the number of integer digits and s is the decimal number number of digits.
- NUMBER data types support variable length, which means they can only take up as much space as they need.
- For very large numbers, you can use the BINARY_DOUBLE data type, which can store a larger range of numeric values.
The above is the detailed content of What is the length of number in oracle. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1387
52
How to encrypt oracle view
Apr 11, 2025 pm 08:30 PM
Oracle View Encryption allows you to encrypt data in the view, thereby enhancing the security of sensitive information. The steps include: 1) creating the master encryption key (MEk); 2) creating an encrypted view, specifying the view and MEk to be encrypted; 3) authorizing users to access the encrypted view. How encrypted views work: When a user querys for an encrypted view, Oracle uses MEk to decrypt data, ensuring that only authorized users can access readable data.
How to uninstall Oracle installation failed
Apr 11, 2025 pm 08:24 PM
Uninstall method for Oracle installation failure: Close Oracle service, delete Oracle program files and registry keys, uninstall Oracle environment variables, and restart the computer. If the uninstall fails, you can uninstall manually using the Oracle Universal Uninstall Tool.
How to delete all data from oracle
Apr 11, 2025 pm 08:36 PM
Deleting all data in Oracle requires the following steps: 1. Establish a connection; 2. Disable foreign key constraints; 3. Delete table data; 4. Submit transactions; 5. Enable foreign key constraints (optional). Be sure to back up the database before execution to prevent data loss.
How to check invalid numbers of oracle
Apr 11, 2025 pm 08:27 PM
Oracle Invalid numeric errors may be caused by data type mismatch, numeric overflow, data conversion errors, or data corruption. Troubleshooting steps include checking data types, detecting digital overflows, checking data conversions, checking data corruption, and exploring other possible solutions such as configuring the NLS_NUMERIC_CHARACTERS parameter and enabling data verification logging.
What to do if the oracle can't be opened
Apr 11, 2025 pm 10:06 PM
Solutions to Oracle cannot be opened include: 1. Start the database service; 2. Start the listener; 3. Check port conflicts; 4. Set environment variables correctly; 5. Make sure the firewall or antivirus software does not block the connection; 6. Check whether the server is closed; 7. Use RMAN to recover corrupt files; 8. Check whether the TNS service name is correct; 9. Check network connection; 10. Reinstall Oracle software.
How to paginate oracle database
Apr 11, 2025 pm 08:42 PM
Oracle database paging uses ROWNUM pseudo-columns or FETCH statements to implement: ROWNUM pseudo-columns are used to filter results by row numbers and are suitable for complex queries. The FETCH statement is used to get the specified number of first rows and is suitable for simple queries.
How to solve the problem of closing oracle cursor
Apr 11, 2025 pm 10:18 PM
The method to solve the Oracle cursor closure problem includes: explicitly closing the cursor using the CLOSE statement. Declare the cursor in the FOR UPDATE clause so that it automatically closes after the scope is ended. Declare the cursor in the USING clause so that it automatically closes when the associated PL/SQL variable is closed. Use exception handling to ensure that the cursor is closed in any exception situation. Use the connection pool to automatically close the cursor. Disable automatic submission and delay cursor closing.
How to create cursors in oracle loop
Apr 12, 2025 am 06:18 AM
In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.
