Method alter

src/alter_table/alter_table.rs:418–422

Alter columns or table constraints. Multiples call of this method will build the SQL respecting the order of the calls ### Example ``` # #[cfg(any(feature = "postgresql", feature = "mysql"))] # { # use sql_query_builder as sql; let query = sql::AlterTable::new() .alter("COLUMN created_at SET DEFAULT now()") .to_string(); # let expected = "ALTER COLUMN created_at SET DEFAULT now()"; # assert_eq!

(mut self, alter_exp: &str)

  /// ALTER COLUMN created_at SET DEFAULT now()
  /// ```
  pub fn alter(mut self, alter_exp: &str) -> Self {
    let action = AlterTableActionItem(AlterTableOrderedAction::Alter, alter_exp.trim().to_string());
    push_unique(&mut self._ordered_actions, action);
    self
  }
}

impl std::fmt::Display for AlterTable {