Details
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Bug
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Resolution: Fixed
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Critical
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7.0.4
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1
Description
create index ix1 on default(c1,c2);
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upsert into default values ("k01",{"c1":1, "c2":5});
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select count(1) FROM default AS d WHERE d.c1 = 1 AND ((d.c2 = 6 AND IFMISSINGORNULL(1,"") != "" ) OR IFMISSINGORNULL(1,"") = "");
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--gives 0 correct answer
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select count(1) FROM default AS d WHERE d.c1 = 1 AND ((d.c2 = 6 AND IFMISSINGORNULL($qp1,"") != "" ) OR IFMISSINGORNULL($qp1,"") = "");
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-- gives 1 wrong answer it not even depends on $qp1 no complain because it used index aggregates the spans not exact
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explain select count(1) FROM default AS d WHERE d.c1 = 1 AND ((d.c2 = 6 AND IFMISSINGORNULL($qp1,"") != "" ) OR IFMISSINGORNULL($qp1,"") = "");
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{
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"requestID": "367dbde2-d3f3-4365-a518-696f5826ba14",
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"signature": "json",
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"results": [
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{
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"plan": {
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"#operator": "Sequence",
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"~children": [
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{
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"#operator": "IndexScan3",
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"as": "d",
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"covers": [
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"cover ((`d`.`c1`))",
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"cover ((`d`.`c2`))",
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"cover ((meta(`d`).`id`))",
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"cover (count(1))"
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],
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"index": "ix1",
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"index_group_aggs": {
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"aggregates": [
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{
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"aggregate": "COUNT",
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"expr": "1",
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"id": 3,
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"keypos": -1
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}
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]
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},
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"index_id": "f8939e87c23640f4",
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"index_projection": {
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"entry_keys": [
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3
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]
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},
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"keyspace": "default",
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"namespace": "default",
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"spans": [
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{
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"exact": true,
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"range": [
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{
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"high": "1",
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"inclusion": 3,
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"low": "1"
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},
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{
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"high": "6",
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"inclusion": 3,
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"low": "6"
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}
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]
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},
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{
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"exact": true,
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"range": [
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{
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"high": "1",
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"inclusion": 3,
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"low": "1"
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}
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]
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}
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],
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"using": "gsi"
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},
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{
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"#operator": "Parallel",
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"~child": {
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"#operator": "Sequence",
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"~children": [
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{
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"#operator": "InitialProject",
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"result_terms": [
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{
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"expr": "cover (count(1))"
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}
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}
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]
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}
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]
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}
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}
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]
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},
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"text": "select count(1) FROM default AS d WHERE d.c1 = 1 AND ((d.c2 = 6 AND IFMISSINGORNULL($qp1,\"\") != \"\" ) OR IFMISSINGORNULL($qp1,\"\") = \"\");"
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}
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],
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"status": "success",
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"metrics": {
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"elapsedTime": "2.715615ms",
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"executionTime": "2.527752ms",
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"resultCount": 1,
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"resultSize": 3011,
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"serviceLoad": 3
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}
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}
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Attachments
Issue Links
- relates to
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MB-51817 Push filters to index scan to potentially reduce fetch size
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- Resolved
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