Struct MySQLColumnGetter

internal/x/expander/expander_test.go:57–59

MySQLColumnGetter implements ColumnGetter for MySQL. Column names are read from the result set metadata returned by executing the query; the test tables are empty, so no real rows are transferred. An earlier implementation pulled column metadata straight out of a prepared statement via a forked mys

// works with the upstream driver and keeps the test covering the same
// behavior.
type MySQLColumnGetter struct {
	db *sql.DB
}

func (g *MySQLColumnGetter) GetColumnNames(ctx context.Context, query string) ([]string, error) {
	rows, err := g.db.QueryContext(ctx, query)