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Add EXPLAIN QUERY TREE support for ClickHouse query tree explain statements #102

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Merged
kyleconroy merged 1 commit into from
Dec 30, 2025
Merged

Add EXPLAIN QUERY TREE support for ClickHouse query tree explain statements #102

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1 change: 1 addition & 0 deletions ast/ast.go
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Original file line number Diff line number Diff line change
Expand Up @@ -702,6 +702,7 @@ const (
ExplainPlan ExplainType = "PLAN"
ExplainPipeline ExplainType = "PIPELINE"
ExplainEstimate ExplainType = "ESTIMATE"
ExplainQueryTree ExplainType = "QUERY TREE"
ExplainCurrentTransaction ExplainType = "CURRENT TRANSACTION"
)

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8 changes: 8 additions & 0 deletions parser/parser.go
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Expand Up @@ -3685,6 +3685,14 @@ func (p *Parser) parseExplain() *ast.ExplainQuery {
explain.ExplainType = ast.ExplainEstimate
explain.ExplicitType = true
p.nextToken()
case "QUERY":
// EXPLAIN QUERY TREE
p.nextToken()
if p.currentIs(token.IDENT) && strings.ToUpper(p.current.Value) == "TREE" {
p.nextToken()
}
explain.ExplainType = ast.ExplainQueryTree
explain.ExplicitType = true
case "CURRENT":
// EXPLAIN CURRENT TRANSACTION
p.nextToken()
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93 changes: 1 addition & 92 deletions parser/testdata/02932_analyzer_rewrite_sum_column_and_constant/metadata.json
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@@ -1,92 +1 @@
{
"explain_todo": {
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"stmt103": true,
"stmt104": true,
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}
}
{}