How can I get enum possible values in a MySQL data

问题:

This question already has an answer here:

Closed 7 years ago.

Possible Duplicate:
Mysql Select Enum Values

I have set up a coloumn in Mysql:

type: ENUM

Length/Values: '01','02','03','04','05','06','07','08','09','10','11','12'

I'm trying to retrive those values from the DB:

I found another post with the same question but my code didn't work

$type = $mysqli->query( "SHOW COLUMNS FROM {$tableName} WHERE Field = 'type'" )->fetch_object()->Type;
        preg_match('/^enum\((.*)\)$/', $type, $matches);
        foreach( explode(',', $matches[1]) as $value )
        {
             $enum[] = trim( $value, "'" );
        }
        return $enum;

I get type Text Insted of ENUM

回答1:

You should parse information from information_schema.columns table -

SELECT
  column_type
FROM
  information_schema.columns
WHERE
  table_schema = 'your_schema' AND table_name = 'your_table' AND column_name = 'your_column'

...another query -

SELECT
  TRIM(TRAILING ')' FROM TRIM(LEADING '(' FROM TRIM(LEADING 'enum' FROM column_type))) column_type
FROM
  information_schema.columns
WHERE
  table_schema = 'your_schema' AND table_name = 'your_table' AND column_name = 'your_column';

There will be something like this - enum('01','02','03'). Parse this string in the php-application.