@Override protected Node visitExplain(Explain node, Void context) { Statement statement = (Statement) process(node.getStatement(), null); return new Explain( node.getLocation().get(), node.isAnalyze(), node.isVerbose(), statement, node.getOptions()); }
private RelationPlan createExplainAnalyzePlan(Analysis analysis, Explain statement) { RelationPlan underlyingPlan = planStatementWithoutOutput(analysis, statement.getStatement()); PlanNode root = underlyingPlan.getRoot(); Scope scope = analysis.getScope(statement); Symbol outputSymbol = symbolAllocator.newSymbol(scope.getRelationType().getFieldByIndex(0)); root = new ExplainAnalyzeNode(idAllocator.getNextId(), root, outputSymbol, statement.isVerbose()); return new RelationPlan(root, scope, ImmutableList.of(outputSymbol)); }
@Override protected Node visitExplain(Explain node, Void context) throws SemanticException { if (node.isAnalyze()) { Statement statement = (Statement) process(node.getStatement(), context); return new Explain(statement, node.isAnalyze(), node.isVerbose(), node.getOptions()); } ExplainType.Type planType = LOGICAL; ExplainFormat.Type planFormat = TEXT; List<ExplainOption> options = node.getOptions(); for (ExplainOption option : options) { if (option instanceof ExplainType) { planType = ((ExplainType) option).getType(); // Use JSON as the default format for EXPLAIN (TYPE IO). if (planType == IO) { planFormat = JSON; } break; } } for (ExplainOption option : options) { if (option instanceof ExplainFormat) { planFormat = ((ExplainFormat) option).getType(); break; } } return getQueryPlan(node, planType, planFormat); }