equalsColumn method
Creates a type-safe equality predicate between two columns.
Nullable and non-nullable columns with the same value type can be compared in either direction.
Implementation
SqlPredicate equalsColumn(SqlTableColumn<T?> other) =>
_ColumnComparisonPredicate(
this as SqlTableColumn<Object?>,
_ComparisonOperator.equal,
other as SqlTableColumn<Object?>,
);