pub fn apply_type(def: &mut ColumnDef, ty: ColumnType, keyed: bool)Expand description
Apply the column’s SQL type to a sea-query ColumnDef. sea-query maps
each of these to the per-dialect concrete type when rendered (e.g.
BigUnsigned → BIGINT UNSIGNED on MySQL, INTEGER on SQLite).
keyed is whether the column participates in an index/constraint: a Text
column that does is rendered as VARCHAR(255) instead of TEXT, because
MySQL rejects indexing a BLOB/TEXT column without a prefix length. On
SQLite/D1 a VARCHAR(255) is just TEXT affinity, so nothing is lost there.
pub(crate) so the incremental DDL builder (crate::ddl) renders an
added column’s type identically to how CREATE TABLE rendered it.