(n *tidbast.Join)
| 336 | } |
| 337 | |
| 338 | func extractJoin(n *tidbast.Join) ([]table, error) { |
| 339 | if n == nil { |
| 340 | return nil, nil |
| 341 | } |
| 342 | l, err := extractResultSetNode(n.Left) |
| 343 | if err != nil { |
| 344 | return nil, errors.Wrapf(err, "failed to extract left node in join") |
| 345 | } |
| 346 | r, err := extractResultSetNode(n.Right) |
| 347 | if err != nil { |
| 348 | return nil, errors.Wrapf(err, "failed to extract right node in join") |
| 349 | } |
| 350 | l = append(l, r...) |
| 351 | return l, nil |
| 352 | } |
| 353 | |
| 354 | func extractTableSource(n *tidbast.TableSource) ([]table, error) { |
| 355 | if n == nil { |
no test coverage detected