How can you import text data in sqlplus?

1 year ago
Olivia Parker
3 minutes

To import text data using sqlplus, you can follow these steps:

  1. Be ready with the text data file you want to import, make sure the file format is correct, with each line representing a data record and fields separated by commas or tabs.
  2. Open Command Prompt or Terminal window and type the sqlplus command to log in to the database. For example, enter the following command to log in to an Oracle database:
  3. Connect to the database using the username and password specified.
  4. In this case, the username refers to the database username, password is the password, and database is the database connection string.
  5. After entering the sqlplus interface, type the following command to create a temporary table for storing imported data:
  6. Set up a temporary table with columns column1 and column2 and their corresponding data types.
  7. Replace column1, column2, etc. with the actual field names and datatype with the corresponding data type.
  8. Use the sqlldr command to import text data. Enter the following command:
  9. Load data into the database using the SQL Loader utility with the specified control file.
  10. In this case, username is the database username, password is the password, database is the database connection string, and control_file.ctl is the path and filename of the control file.
  11. A control file is a text file used to specify information such as the data file to import and target table. Here is an example of the content of a control file:
  12. Import data from the file ‘data_file.txt’ into the table temp_table, with columns separated by commas and optionally enclosed by double quotes.
  13. In the control file, specify the data file to be imported using INFILE, specify the target table using INTO TABLE, specify the delimiter between fields using FIELDS TERMINATED BY, specify the enclosing symbol for field values using OPTIONALLY ENCLOSED BY, and enclose the field names to be imported in parentheses.
  14. After executing the import command, sqlldr will read the control file and data file, and import the data into a temporary table. Once the import is complete, you can use SQL to query the temporary table or insert the data into another table.
  15. After importing is completed, remember to delete the temporary table to release resources. You can use the following command to delete the temporary table:
  16. Delete the temporary table called temp_table.

These are the steps for importing text data using sqlplus. Depending on the specific database and data file format, you may need to adjust the corresponding commands and parameters.

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