Type Alias ColumnType<DB, TableName, ColumnName>

ColumnType: "public" extends keyof DB
    ? DB["public"] extends { Tables: infer T }
        ? TableName extends keyof T
            ? T[TableName] extends { Row: infer R }
                ? ColumnName extends keyof R ? R[ColumnName] : never
                : never
            : never
        : never
    : never

Extract the TypeScript type of a specific column Example: for ('notes', 'user_id') → string (if user_id is UUID)