Method drop

src/alter_table/alter_table.rs:187–191

Drops columns or table constraints, this method overrides the previous value. ### Example ``` # use sql_query_builder as sql; let query = sql::AlterTable::new() .drop("column login") .as_string(); # let expected = "DROP column login"; # assert_eq!(expected, query); ``` Outputs ```sql DROP column login ``` ### Available on crate feature `postgresql` and `mysql` only. Multiples call of this me

(mut self, drop_exp: &str)

  /// DROP column login, DROP constraint login_unique
  /// ```
  pub fn drop(mut self, drop_exp: &str) -> Self {
    let action = AlterTableActionItem(AlterTableOrderedAction::Drop, drop_exp.trim().to_string());
    push_unique(&mut self._ordered_actions, action);
    self
  }

  /// Creates instance of the [AlterTable] command
  pub fn new() -> Self {