Macro icbiadb::query

macro_rules! query {
    ($db:expr, $name:literal, select $($field:ident),+;) => { ... };
    ($db:expr, $name:literal, select $($field:ident),+;filter $f:block) => { ... };
    ($db:expr, $name:literal, $(insert ($($key:ident=$val:expr),+)),+) => { ... };
    ($db:expr, $name:literal, insert_many $v:expr) => { ... };
}