{ "explainVersion": "2", "stages": [ { "$cursor": { "queryPlanner": { "namespace": "bigDB.faker_hacker", "indexFilterSet": false, "parsedQuery": { "abbreviation": { "$regex": "png", "$options": "i" } }, "queryHash": "5DB2D96E", "planCacheKey": "7F56DD5F", "maxIndexedOrSolutionsReached": false, "maxIndexedAndSolutionsReached": false, "maxScansToExplodeReached": false, "winningPlan": { "queryPlan": { "stage": "LIMIT", "planNodeId": 3, "limitAmount": 6, "inputStage": { "stage": "FETCH", "planNodeId": 2, "inputStage": { "stage": "IXSCAN", "planNodeId": 1, "filter": { "abbreviation": { "$regex": "png", "$options": "i" } }, "keyPattern": { "abbreviation": 1 }, "indexName": "abbr_index", "isMultiKey": false, "multiKeyPaths": { "abbreviation": [] }, "isUnique": false, "isSparse": false, "isPartial": false, "indexVersion": 2, "direction": "forward", "indexBounds": { "abbreviation": ["[\"\", {})", "[/png/i, /png/i]"] } } } }, "slotBasedPlan": { "slots": "$$RESULT=s25 $$RID=s26 env: { s2 = Nothing (SEARCH_META), s1 = TimeZoneDatabase(CET...Pacific/Johnston) (timeZoneDB), s3 = 1651510814520 (NOW) }", "stages": "[3] limit 6 \n[2] nlj [] [s9, s5, s6, s7, s8] \n left \n [1] filter {fillEmpty (s4 == /png/i, false) || fillEmpty (regexMatch (PcreRegex(/png/i), s4), false)} \n [1] filter {isRecordId (s9)} \n [1] lspool sp1 [s9, s4, s5, s6, s7, s8] {! isRecordId (s9)} \n [1] union [s9, s4, s5, s6, s7, s8] [\n [s15, s10, s11, s12, s13, s14] [1] project [s10 = Nothing, s11 = Nothing, s12 = Nothing, s13 = Nothing, s14 = Nothing, s15 = KS(3C000104)] \n [1] limit 1 \n [1] coscan , \n [s24, s16, s17, s18, s19, s20] [1] nlj [] [s22, s18, s20] \n left \n [1] sspool sp1 [s22, s18, s20] \n right \n [1] chkbounds s19 s21 s24 \n [1] nlj [s18, s20] [s23] \n left \n [1] project [s18 = \"abbr_index\", s20 = {\"abbreviation\" : 1}, s23 = s22] \n [1] limit 1 \n [1] coscan \n right \n [1] ixseek s23 none s19 s21 s17 [s16 = 0] @\"a3df63e9-c681-4896-92cf-3b32a72075ef\" @\"abbr_index\" true \n \n \n \n \n ] \n right \n [2] limit 1 \n [2] seek s9 s25 s26 s5 s6 s7 s8 [] @\"a3df63e9-c681-4896-92cf-3b32a72075ef\" true false \n \n" } }, "rejectedPlans": [] }, "executionStats": { "executionSuccess": true, "nReturned": 6, "executionTimeMillis": 1, "totalKeysExamined": 479, "totalDocsExamined": 6, "executionStages": { "stage": "limit", "planNodeId": 3, "nReturned": 6, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 1, "limit": 6, "inputStage": { "stage": "nlj", "planNodeId": 2, "nReturned": 6, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "innerOpens": 6, "innerCloses": 1, "outerProjects": [], "outerCorrelated": [9, 5, 6, 7, 8], "outerStage": { "stage": "filter", "planNodeId": 1, "nReturned": 6, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "numTested": 479, "filter": "fillEmpty (s4 == /png/i, false) || fillEmpty (regexMatch (PcreRegex(/png/i), s4), false) ", "inputStage": { "stage": "filter", "planNodeId": 1, "nReturned": 479, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "numTested": 480, "filter": "isRecordId (s9) ", "inputStage": { "stage": "lspool", "planNodeId": 1, "nReturned": 480, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "spoolId": 1, "outputSlots": [9, 4, 5, 6, 7, 8], "filter": "! isRecordId (s9) ", "inputStage": { "stage": "union", "planNodeId": 1, "nReturned": 480, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "inputSlots": [ 15, 10, 11, 12, 13, 14, 24, 16, 17, 18, 19, 20 ], "outputSlots": [9, 4, 5, 6, 7, 8], "inputStages": [ { "stage": "project", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 1, "projections": { "10": "Nothing ", "11": "Nothing ", "12": "Nothing ", "13": "Nothing ", "14": "Nothing ", "15": "KS(3C000104) " }, "inputStage": { "stage": "limit", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 1, "limit": 1, "inputStage": { "stage": "coscan", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0 } } }, { "stage": "nlj", "planNodeId": 1, "nReturned": 479, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "innerOpens": 1, "innerCloses": 1, "outerProjects": [], "outerCorrelated": [22, 18, 20], "outerStage": { "stage": "sspool", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "spoolId": 1, "outputSlots": [22, 18, 20] }, "innerStage": { "stage": "chkbounds", "planNodeId": 1, "nReturned": 479, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "seeks": 0, "inKeySlot": 19, "inRecordIdSlot": 21, "outSlot": 24, "inputStage": { "stage": "nlj", "planNodeId": 1, "nReturned": 479, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "innerOpens": 1, "innerCloses": 1, "outerProjects": [18, 20], "outerCorrelated": [23], "outerStage": { "stage": "project", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "projections": { "18": "\"abbr_index\" ", "20": "{\"abbreviation\" : 1} ", "23": "s22 " }, "inputStage": { "stage": "limit", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "limit": 1, "inputStage": { "stage": "coscan", "planNodeId": 1, "nReturned": 1, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0 } } }, "innerStage": { "stage": "ixseek", "planNodeId": 1, "nReturned": 479, "executionTimeMillisEstimate": 0, "opens": 1, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "indexName": "abbr_index", "keysExamined": 479, "seeks": 1, "numReads": 479, "recordSlot": 19, "recordIdSlot": 21, "snapshotIdSlot": 17, "seekKeySlotLow": 23, "outputSlots": [16], "indexKeysToInclude": "00000000000000000000000000000001" } } } } ] } } } }, "innerStage": { "stage": "limit", "planNodeId": 2, "nReturned": 6, "executionTimeMillisEstimate": 0, "opens": 6, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 1, "limit": 1, "inputStage": { "stage": "seek", "planNodeId": 2, "nReturned": 6, "executionTimeMillisEstimate": 0, "opens": 6, "closes": 1, "saveState": 1, "restoreState": 1, "isEOF": 0, "numReads": 6, "recordSlot": 25, "recordIdSlot": 26, "seekKeySlot": 9, "snapshotIdSlot": 5, "indexIdSlot": 6, "indexKeySlot": 7, "indexKeyPatternSlot": 8, "fields": [], "outputSlots": [] } } } }, "allPlansExecution": [] } }, "nReturned": 6, "executionTimeMillisEstimate": 0 }, { "$unwind": { "path": "$noun", "preserveNullAndEmptyArrays": true }, "nReturned": 6, "executionTimeMillisEstimate": 0 }, { "$limit": 6, "nReturned": 6, "executionTimeMillisEstimate": 0 } ], "serverInfo": { "host": "M-C02DR0F9ML85.local", "port": 27017, "version": "5.3.0-rc3", "gitVersion": "cf6ac4d17da6eb6562f503a515ea6aea2ccbf944" }, "serverParameters": { "internalQueryFacetBufferSizeBytes": 104857600, "internalQueryFacetMaxOutputDocSizeBytes": 104857600, "internalLookupStageIntermediateDocumentMaxSizeBytes": 104857600, "internalDocumentSourceGroupMaxMemoryBytes": 104857600, "internalQueryMaxBlockingSortMemoryUsageBytes": 104857600, "internalQueryProhibitBlockingMergeOnMongoS": 0, "internalQueryMaxAddToSetBytes": 104857600, "internalDocumentSourceSetWindowFieldsMaxMemoryBytes": 104857600 }, "command": { "aggregate": "faker_hacker", "pipeline": [ { "$match": { "abbreviation": { "$regularExpression": { "pattern": "png", "options": "i" } } } }, { "$unwind": { "path": "$noun", "preserveNullAndEmptyArrays": true } }, { "$limit": 6 } ], "allowDiskUse": true, "cursor": {}, "maxTimeMS": 60000, "$db": "bigDB" }, "ok": 1 }