var_dump of getColumnsFull()

'mmetal' =>
    array (size=29)
      'asd' =>
        array (size=2)
          'sa' =>
            array (size=28)
              'TABLE_CATALOG' => string 'def' (length=3)
              'TABLE_SCHEMA' => string 'mmetal' (length=6)
              'TABLE_NAME' => string 'asd' (length=3)
              'COLUMN_NAME' => string 'sa' (length=2)
              'ORDINAL_POSITION' => string '1' (length=1)
              'COLUMN_DEFAULT' => null
              'IS_NULLABLE' => string 'NO' (length=2)
              'DATA_TYPE' => string 'int' (length=3)
              'CHARACTER_MAXIMUM_LENGTH' => null
              'CHARACTER_OCTET_LENGTH' => null
              'NUMERIC_PRECISION' => string '10' (length=2)
              'NUMERIC_SCALE' => string '0' (length=1)
              'CHARACTER_SET_NAME' => null
              'COLLATION_NAME' => null
              'COLUMN_TYPE' => string 'int(11)' (length=7)
              'COLUMN_KEY' => string '' (length=0)
              'EXTRA' => string '' (length=0)
              'PRIVILEGES' => string 'select,insert,update,references' (length=31)
              'COLUMN_COMMENT' => string '' (length=0)
              'Field' => string 'sa' (length=2)
              'Type' => string 'int(11)' (length=7)
              'Collation' => null
              'Null' => string 'NO' (length=2)
              'Key' => string '' (length=0)
              'Default' => null
              'Extra' => string '' (length=0)
              'Privileges' => string 'select,insert,update,references' (length=31)
              'Comment' => string '' (length=0)
          'temp' =>
            array (size=28)
              'TABLE_CATALOG' => string 'def' (length=3)
              'TABLE_SCHEMA' => string 'mmetal' (length=6)
              'TABLE_NAME' => string 'asd' (length=3)
              'COLUMN_NAME' => string 'temp' (length=4)
              'ORDINAL_POSITION' => string '2' (length=1)
              'COLUMN_DEFAULT' => null
              'IS_NULLABLE' => string 'NO' (length=2)
              'DATA_TYPE' => string 'int' (length=3)
              'CHARACTER_MAXIMUM_LENGTH' => null
              'CHARACTER_OCTET_LENGTH' => null
              'NUMERIC_PRECISION' => string '10' (length=2)
              'NUMERIC_SCALE' => string '0' (length=1)
              'CHARACTER_SET_NAME' => null
              'COLLATION_NAME' => null
              'COLUMN_TYPE' => string 'int(11)' (length=7)
              'COLUMN_KEY' => string '' (length=0)
              'EXTRA' => string '' (length=0)
              'PRIVILEGES' => string 'select,insert,update,references' (length=31)
              'COLUMN_COMMENT' => string '' (length=0)
              'Field' => string 'temp' (length=4)
              'Type' => string 'int(11)' (length=7)
              'Collation' => null
              'Null' => string 'NO' (length=2)
              'Key' => string '' (length=0)
              'Default' => null
              'Extra' => string '' (length=0)
              'Privileges' => string 'select,insert,update,references' (length=31)
              'Comment' => string '' (length=0)
      'Field' => &null
      'COLUMN_NAME' => &null
      'Type' => &null
      'COLUMN_TYPE' => &null
      'Collation' => &null
      'COLLATION_NAME' => &null
      'Null' => &null
      'IS_NULLABLE' => &null
      'Key' => &null
      'COLUMN_KEY' => &null
      'Default' => &null
      'COLUMN_DEFAULT' => &null
      'Extra' => &null
      'EXTRA' => &null
      'Privileges' => &null
      'PRIVILEGES' => &null
      'Comment' => &null
      'COLUMN_COMMENT' => &null
      'TABLE_CATALOG' => null
      'TABLE_SCHEMA' => null
      'TABLE_NAME' => null
      'ORDINAL_POSITION' => int 6
      'DATA_TYPE' => boolean false
      'CHARACTER_MAXIMUM_LENGTH' => null
      'CHARACTER_OCTET_LENGTH' => null
      'NUMERIC_PRECISION' => null
      'NUMERIC_SCALE' => null
      'CHARACTER_SET_NAME' => boolean false