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MySQL Tutorial - Create an Index for a Given Table

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(Continued from previous topic...)

How To Create an Index for a Given Table?

If you have a table with a lots of rows, and you know that one of the columns will be used often as a search criteria, you can add an index for that column to improve the search performance. To add an index, you can use the "CREATE INDEX" statement as shown in the following script:

mysql> CREATE TABLE tip (id INTEGER PRIMARY KEY,
   subject VARCHAR(80) NOT NULL,
   description VARCHAR(256) NOT NULL,
   create_date DATE NULL);
Query OK, 0 rows affected (0.08 sec)

mysql> CREATE INDEX tip_subject ON tip(subject);
Query OK, 0 rows affected (0.19 sec)
Records: 0  Duplicates: 0  Warnings: 0

(Continued on next topic...)

  1. What Are DDL Statements?
  2. How To Create a New Table?
  3. What Happens If You No CREATE Privilege in a Database?
  4. How To Get a List of All Tables in a Database?
  5. How To Get a List of Columns in an Existing Table?
  6. How To See the CREATE TABLE Statement of an Existing Table?
  7. How To Create a New Table by Selecting Rows from Another Table?
  8. How To Add a New Column to an Existing Table?
  9. How To Delete an Existing Column in a Table?
  10. How To Rename an Existing Column in a Table?
  11. How To Rename an Existing Table?
  12. How To Drop an Existing Table?
  13. How To Create an Index for a Given Table?
  14. How To Get a List of Indexes of a Given Table?
  15. How To Drop an Existing Index?
  16. How To Create a New View?
  17. How To Drop an Existing View?

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