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Fix mistake push down limit with skip. #5241

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merged 3 commits into from
Jan 12, 2023
Merged

Fix mistake push down limit with skip. #5241

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a40061c
Fix mistake push down limit with skip.
Shylock-Hg Jan 12, 2023
315f288
Merge branch 'master' into fix/get-edges-with-skip-limit
Shylock-Hg Jan 12, 2023
337f11b
Merge branch 'master' into fix/get-edges-with-skip-limit
Sophie-Xie Jan 12, 2023
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3 changes: 2 additions & 1 deletion src/graph/optimizer/rule/GetEdgesTransformAppendVerticesLimitRule.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -121,7 +121,8 @@ StatusOr<OptRule::TransformResult> GetEdgesTransformAppendVerticesLimitRule::tra

newLimitGroupNode->dependsOn(newAppendVerticesGroup);

auto *newScanEdges = GetEdgesTransformUtils::traverseToScanEdges(traverse, limit->count(qctx));
auto *newScanEdges =
GetEdgesTransformUtils::traverseToScanEdges(traverse, limit->offset() + limit->count(qctx));
if (newScanEdges == nullptr) {
return TransformResult::noTransform();
}
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3 changes: 2 additions & 1 deletion src/graph/optimizer/rule/GetEdgesTransformRule.cpp
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Expand Up @@ -100,7 +100,8 @@ StatusOr<OptRule::TransformResult> GetEdgesTransformRule::transform(
newProjectGroupNode->dependsOn(newLimitGroup);
newProject->setInputVar(newLimit->outputVar());

auto *newScanEdges = GetEdgesTransformUtils::traverseToScanEdges(traverse, limit->count(qctx));
auto *newScanEdges =
GetEdgesTransformUtils::traverseToScanEdges(traverse, limit->offset() + limit->count(qctx));
if (newScanEdges == nullptr) {
return TransformResult::noTransform();
}
Expand Down
123 changes: 123 additions & 0 deletions tests/tck/features/match/Scan.feature
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Expand Up @@ -78,6 +78,67 @@ Feature: Match seek by scan
| Name |
| "Mary" |

Scenario: query vertices by scan with skip limit
When executing query:
"""
MATCH (v)
RETURN v.person.name AS name
SKIP 10 LIMIT 4
"""
Then the result should be, in any order:
| name |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
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When executing query:
"""
MATCH (v)
RETURN v.person.name AS name
SKIP 10 LIMIT 5
"""
Then the result should be, in any order:
| name |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
When executing query:
"""
MATCH (v)
RETURN v.person.name AS name
SKIP 10 LIMIT 7
"""
Then the result should be, in any order:
| name |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
When executing query:
"""
MATCH (v)
RETURN v.person.name AS name
SKIP 10 LIMIT 11
"""
Then the result should be, in any order:
| name |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |

Scenario: query vertices by scan failed
When executing query:
"""
Expand Down Expand Up @@ -168,3 +229,65 @@ Feature: Match seek by scan
LIMIT 3
"""
Then a ExecutionError should be raised at runtime: Scan vertices or edges need to specify a limit number, or limit number can not push down.

# #5223
Scenario: query edge by scan with skip limit
When executing query:
"""
MATCH ()-[e]->()
RETURN type(e) AS Type
SKIP 10 LIMIT 4
"""
Then the result should be, in any order:
| Type |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
When executing query:
"""
MATCH ()-[e]->()
RETURN type(e) AS Type
SKIP 10 LIMIT 5
"""
Then the result should be, in any order:
| Type |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
When executing query:
"""
MATCH ()-[e]->()
RETURN type(e) AS Type
SKIP 10 LIMIT 7
"""
Then the result should be, in any order:
| Type |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
When executing query:
"""
MATCH ()-[e]->()
RETURN type(e) AS Type
SKIP 10 LIMIT 11
"""
Then the result should be, in any order:
| Type |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |
| /[\w_]+/ |