# cubrid_seq_drop

(PECL CUBRID >= 8.3.0)

cubrid_seq_drop — Delete an element from sequence type column using OID

### 说明

cubrid_seq_drop ( resource `$conn_identifier` , string `$oid` , string `$attr_name` , int `$index` ) : bool

The cubrid_seq_drop() function is used to delete an element you request from the given sequence type attribute in the database.

### 参数

`conn_identifier`

  Connection identifier.

`oid`

  OID of the instance you want to work with.

`attr_name`

  Name of the attribute that you want to delete an element from.

`index`

  Index of the element that you want to delete (1-based).

### 返回值

`TRUE`, when process is successful.

`FALSE`, when process is unsuccessful.

### 范例

Example #1 cubrid_seq_drop() example

    <?php
    $conn = cubrid_connect("localhost", 33000, "demodb", "dba");

    @cubrid_execute($conn, "DROP TABLE foo");
    cubrid_execute($conn, "CREATE TABLE foo(a int AUTO_INCREMENT, b set(int), c sequence(int), d char(10))");
    cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(1, {1,2,3}, {11,22,33,333}, 'a')");

    $req = cubrid_execute($conn, "SELECT * FROM foo", CUBRID_INCLUDE_OID);

    cubrid_move_cursor($req, 1, CUBRID_CURSOR_FIRST);
    $oid = cubrid_current_oid($req);

    $attr = cubrid_col_get($conn, $oid, "c");
    var_dump($attr);

    cubrid_seq_drop($conn, $oid, "c", 4);

    $attr = cubrid_col_get($conn, $oid, "c");
    var_dump($attr);

    cubrid_close_request($req);
    cubrid_disconnect($conn);
    ?>

以上例程会输出：

    array(4) {
      [0]=>
      string(2) "11"
      [1]=>
      string(2) "22"
      [2]=>
      string(2) "33"
      [3]=>
      string(3) "333"
    }
    array(3) {
      [0]=>
      string(2) "11"
      [1]=>
      string(2) "22"
      [2]=>
      string(2) "33"
    }

### 参见

- cubrid_seq_insert() - Insert an element to a sequence type column using OID
- cubrid_seq_put() - Update the element value of sequence type column using OID