mirror of https://github.com/citusdata/citus.git
Improve code to prevent allowing wrong pushdowns
Onder Kalaci
parent
88f4956064
commit
64c70a0777
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@ -72,6 +72,19 @@ typedef struct WalkerState
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bool badCoalesce;
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} WalkerState;
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typedef struct InstantiateQualWalker
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{
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ShardInterval *targetShardInterval;
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Var *relationPartitionColumn;
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}InstantiateQualWalker;
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typedef struct EqualityCheckOnPartitionColumnWalker
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{
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Var *relationPartitionColumn;
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bool partitionColumnEqualityExists;
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}PartitionColumnEqualityCheckWalker;
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bool EnableRouterExecution = true;
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/* planner functions forward declarations */
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@ -128,6 +141,7 @@ static DeferredErrorMessage * InsertPartitionColumnMatchesSelect(Query *query,
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Oid *
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selectPartitionColumnTableId);
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static void AddUninstantiatedEqualityQual(Query *query, Var *targetPartitionColumnVar);
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static Node * PartitionColumnEqualityWalker(Node *originalNode, void *context);
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static DeferredErrorMessage * ErrorIfQueryHasModifyingCTE(Query *queryTree);
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@ -356,11 +370,13 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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ListCell *restrictionCell = NULL;
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Task *modifyTask = NULL;
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List *selectPlacementList = NIL;
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List *insertShardPlacementList = NULL;
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List *intersectedPlacementList = NULL;
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uint64 selectAnchorShardId = INVALID_SHARD_ID;
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List *relationShardList = NIL;
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uint64 jobId = INVALID_JOB_ID;
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List *insertShardPlacementList = NULL;
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List *intersectedPlacementList = NULL;
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ShardInterval *anchorShardInterval = NULL;
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ListCell *relationShardCell = NULL;
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bool routerPlannable = false;
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bool upsertQuery = false;
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bool replacePrunedQueryWithDummy = false;
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@ -377,6 +393,9 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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{
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RelationRestriction *restriction = lfirst(restrictionCell);
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List *originalBaserestrictInfo = restriction->relOptInfo->baserestrictinfo;
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InstantiateQualWalker *instantiateQualWalker = palloc0(
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sizeof(InstantiateQualWalker));
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Var *relationPartitionKey = PartitionKey(restriction->relationId);
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/*
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* We haven't added the quals if all participating tables are reference
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@ -387,9 +406,12 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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break;
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}
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instantiateQualWalker->relationPartitionColumn = relationPartitionKey;
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instantiateQualWalker->targetShardInterval = shardInterval;
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originalBaserestrictInfo =
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(List *) InstantiatePartitionQual((Node *) originalBaserestrictInfo,
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shardInterval);
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instantiateQualWalker);
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}
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/*
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@ -436,15 +458,40 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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return NULL;
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}
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/*
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* If the anchorShardInterval belongs to a reference table and the target tables it
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* not a reference table, find another shard interval that does not belong to a
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* reference table.
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*/
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anchorShardInterval = LoadShardInterval(selectAnchorShardId);
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if (PartitionMethod(anchorShardInterval->relationId) == DISTRIBUTE_BY_NONE &&
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!restrictionContext->allReferenceTables)
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{
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foreach(relationShardCell, relationShardList)
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{
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RelationShard *relationShard = (RelationShard *) lfirst(relationShardCell);
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if (PartitionMethod(relationShard->relationId) != DISTRIBUTE_BY_NONE)
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{
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anchorShardInterval = LoadShardInterval(relationShard->shardId);
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break;
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}
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}
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}
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/* this case indicate*/
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if (!ShardsColocated(anchorShardInterval, shardInterval))
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{
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ereport(DEBUG2, (errmsg("Skipping target shard interval %ld since "
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"SELECT query for it pruned away", shardId)));
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return NULL;
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}
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/* get the placements for insert target shard and its intersection with select */
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insertShardPlacementList = FinalizedShardPlacementList(shardId);
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intersectedPlacementList = IntersectPlacementList(insertShardPlacementList,
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selectPlacementList);
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/*
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* If insert target does not have exactly the same placements with the select,
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* we sholdn't run the query.
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*/
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if (list_length(insertShardPlacementList) != list_length(intersectedPlacementList))
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{
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ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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@ -454,7 +501,6 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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"for shard %ld", shardId)));
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}
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/* this is required for correct deparsing of the query */
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ReorderInsertSelectTargetLists(copiedQuery, copiedInsertRte, copiedSubqueryRte);
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@ -479,7 +525,7 @@ RouterModifyTaskForShardInterval(Query *originalQuery, ShardInterval *shardInter
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modifyTask = CreateBasicTask(jobId, taskIdIndex, MODIFY_TASK, queryString->data);
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modifyTask->dependedTaskList = NULL;
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modifyTask->anchorShardId = shardId;
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modifyTask->taskPlacementList = insertShardPlacementList;
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modifyTask->taskPlacementList = FinalizedShardPlacementList(shardId);
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modifyTask->upsertQuery = upsertQuery;
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modifyTask->relationShardList = relationShardList;
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modifyTask->replicationModel = cacheEntry->replicationModel;
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@ -1142,9 +1188,23 @@ AddUninstantiatedEqualityQual(Query *query, Var *partitionColumn)
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Oid equalsOperator = InvalidOid;
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Oid greaterOperator = InvalidOid;
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bool hashable = false;
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PartitionColumnEqualityCheckWalker *walker =
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palloc0(sizeof(PartitionColumnEqualityCheckWalker));
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AssertArg(query->commandType == CMD_SELECT);
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walker->partitionColumnEqualityExists = false;
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walker->relationPartitionColumn = partitionColumn;
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/* if the query already includes part_column = const, we don't need to add another. In fact,
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* adding another equality qual breaks lots of things.
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*/
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PartitionColumnEqualityWalker((Node *) query->jointree->quals, walker);
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if (walker->partitionColumnEqualityExists)
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{
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return;
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}
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/* get the necessary equality operator */
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get_sort_group_operators(partitionColumn->vartype, false, true, false,
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&lessThanOperator, &equalsOperator, &greaterOperator,
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@ -1186,6 +1246,51 @@ AddUninstantiatedEqualityQual(Query *query, Var *partitionColumn)
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}
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/*
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*
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*/
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static Node *
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PartitionColumnEqualityWalker(Node *originalNode, void *context)
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{
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PartitionColumnEqualityCheckWalker *walker =
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(PartitionColumnEqualityCheckWalker *) context;
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if (originalNode == NULL)
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{
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return NULL;
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}
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if (IsA(originalNode, OpExpr) && list_length(((OpExpr *) originalNode)->args) == 2)
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{
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OpExpr *op = (OpExpr *) originalNode;
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Node *leftop = get_leftop((Expr *) op);
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Node *rightop = get_rightop((Expr *) op);
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if (IsA(leftop, Var) && IsA(rightop, Const) &&
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OperatorImplementsEquality(op->opno))
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{
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if (((Var *) leftop)->varattno == walker->relationPartitionColumn->varattno)
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{
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walker->partitionColumnEqualityExists = true;
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return NULL;
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}
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}
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else if (IsA(leftop, Const) && IsA(rightop, Var) &&
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OperatorImplementsEquality(op->opno))
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{
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walker->partitionColumnEqualityExists = true;
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return NULL;
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}
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}
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return expression_tree_mutator(originalNode, PartitionColumnEqualityWalker,
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(void *) context);
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}
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/*
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* ModifyQuerySupported returns NULL if the query only contains supported
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* features, otherwise it returns an error description.
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@ -2950,7 +3055,10 @@ CopyRelationRestrictionContext(RelationRestrictionContext *oldContext)
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static Node *
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InstantiatePartitionQual(Node *node, void *context)
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{
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ShardInterval *shardInterval = (ShardInterval *) context;
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InstantiateQualWalker *instantiateContext = ((InstantiateQualWalker *) context);
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ShardInterval *shardInterval = instantiateContext->targetShardInterval;
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Var *relationPartitionColumn = instantiateContext->relationPartitionColumn;
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Assert(shardInterval->minValueExists);
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Assert(shardInterval->maxValueExists);
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@ -2974,6 +3082,7 @@ InstantiatePartitionQual(Node *node, void *context)
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Node *leftop = get_leftop((Expr *) op);
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Node *rightop = get_rightop((Expr *) op);
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Param *param = NULL;
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Var *currentPartitionColumn = NULL;
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Var *hashedGEColumn = NULL;
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OpExpr *hashedGEOpExpr = NULL;
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@ -2989,13 +3098,15 @@ InstantiatePartitionQual(Node *node, void *context)
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Oid integer4LEoperatorId = InvalidOid;
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/* look for the Params */
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if (IsA(leftop, Param))
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if (IsA(leftop, Param) && IsA(rightop, Var))
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{
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param = (Param *) leftop;
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currentPartitionColumn = (Var *) rightop;
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}
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else if (IsA(rightop, Param))
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else if (IsA(rightop, Param) & IsA(leftop, Var))
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{
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param = (Param *) rightop;
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currentPartitionColumn = (Var *) leftop;
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}
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/* not an interesting param for our purpose, so return */
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@ -3004,6 +3115,13 @@ InstantiatePartitionQual(Node *node, void *context)
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return node;
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}
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/* if the qual is not on the partition column, skip it */
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if (relationPartitionColumn && currentPartitionColumn->varattno !=
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relationPartitionColumn->varattno)
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{
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return node;
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}
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/* get the integer >=, <= operators from the catalog */
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integer4GEoperatorId = get_opfamily_member(INTEGER_BTREE_FAM_OID, INT4OID,
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INT4OID,
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@ -198,7 +198,6 @@ DEBUG: StartTransactionCommand
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DEBUG: StartTransaction
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DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 0/1/0, nestlvl: 1, children:
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300004 since SELECT query for it pruned away
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@ -207,12 +206,10 @@ DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300005 AS citus_table_alias (user_id, "time") SELECT user_id, "time" FROM public.raw_events_first_13300001 raw_events_first WHERE ((user_id = 7) AND ((hashint4(user_id) >= '-1073741824'::integer) AND (hashint4(user_id) <= '-1'::integer)))
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300006 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300007 since SELECT query for it pruned away
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@ -248,17 +245,14 @@ DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300004 AS citus_table_alias (user_id, "time", value_1, value_2, value_3, value_4) SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM public.raw_events_first_13300000 raw_events_first WHERE ((user_id = 8) AND ((hashint4(user_id) >= '-2147483648'::integer) AND (hashint4(user_id) <= '-1073741825'::integer)))
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300005 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300006 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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@ -371,28 +365,9 @@ DEBUG: StartTransactionCommand
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DEBUG: StartTransaction
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DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 0/1/0, nestlvl: 1, children:
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300004 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300005 AS citus_table_alias (user_id, value_1, value_3) SELECT user_id, value_1, value_3 FROM public.raw_events_first_13300001 raw_events_first WHERE (((user_id = 9) OR (user_id = 16)) AND ((hashint4(user_id) >= '-1073741824'::integer) AND (hashint4(user_id) <= '-1'::integer))) RETURNING citus_table_alias.user_id, citus_table_alias."time", citus_table_alias.value_1, citus_table_alias.value_2, citus_table_alias.value_3, citus_table_alias.value_4
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300003
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DEBUG: Skipping target shard interval 13300006 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300007 AS citus_table_alias (user_id, value_1, value_3) SELECT user_id, value_1, value_3 FROM public.raw_events_first_13300003 raw_events_first WHERE (((user_id = 9) OR (user_id = 16)) AND ((hashint4(user_id) >= 1073741824) AND (hashint4(user_id) <= 2147483647))) RETURNING citus_table_alias.user_id, citus_table_alias."time", citus_table_alias.value_1, citus_table_alias.value_2, citus_table_alias.value_3, citus_table_alias.value_4
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DEBUG: ProcessQuery
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DEBUG: Plan is router executable
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ERROR: duplicate key value violates unique constraint "raw_events_second_user_id_value_1_key_13300007"
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DETAIL: Key (user_id, value_1)=(9, 90) already exists.
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CONTEXT: while executing command on localhost:57638
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ERROR: cannot perform distributed planning for the given modification
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DETAIL: Select query cannot be pushed down to the worker.
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-- now do some aggregations
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INSERT INTO agg_events
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SELECT
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@ -722,21 +697,21 @@ DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300004
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DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300004 AS citus_table_alias (user_id) SELECT user_id FROM public.raw_events_first_13300003 raw_events_first WHERE ((user_id IN (SELECT raw_events_second.user_id FROM public.raw_events_second_13300007 raw_events_second WHERE (raw_events_second.user_id = 2))) AND ((hashint4(user_id) >= '-2147483648'::integer) AND (hashint4(user_id) <= '-1073741825'::integer)))
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DEBUG: Skipping target shard interval 13300004 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300004
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DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300005 AS citus_table_alias (user_id) SELECT user_id FROM public.raw_events_first_13300003 raw_events_first WHERE ((user_id IN (SELECT raw_events_second.user_id FROM public.raw_events_second_13300007 raw_events_second WHERE (raw_events_second.user_id = 2))) AND ((hashint4(user_id) >= '-1073741824'::integer) AND (hashint4(user_id) <= '-1'::integer)))
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DEBUG: Skipping target shard interval 13300005 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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DEBUG: predicate pruning for shardId 13300004
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DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: distributed statement: INSERT INTO public.raw_events_second_13300006 AS citus_table_alias (user_id) SELECT user_id FROM public.raw_events_first_13300003 raw_events_first WHERE ((user_id IN (SELECT raw_events_second.user_id FROM public.raw_events_second_13300007 raw_events_second WHERE (raw_events_second.user_id = 2))) AND ((hashint4(user_id) >= 0) AND (hashint4(user_id) <= 1073741823)))
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DEBUG: Skipping target shard interval 13300006 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300000
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DEBUG: predicate pruning for shardId 13300001
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DEBUG: predicate pruning for shardId 13300002
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@ -1555,17 +1530,14 @@ DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: predicate pruning for shardId 13300007
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DEBUG: distributed statement: INSERT INTO public.raw_events_first_13300000 AS citus_table_alias (user_id, "time", value_1, value_2, value_3, value_4) SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM public.raw_events_second_13300004 raw_events_second WHERE ((user_id = 5) AND ((hashint4(user_id) >= '-2147483648'::integer) AND (hashint4(user_id) <= '-1073741825'::integer)))
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DEBUG: predicate pruning for shardId 13300004
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DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: predicate pruning for shardId 13300007
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DEBUG: Skipping target shard interval 13300001 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300004
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DEBUG: predicate pruning for shardId 13300005
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DEBUG: predicate pruning for shardId 13300006
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DEBUG: predicate pruning for shardId 13300007
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DEBUG: Skipping target shard interval 13300002 since SELECT query for it pruned away
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DEBUG: predicate pruning for shardId 13300004
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||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
|
|
@ -1614,12 +1586,10 @@ DEBUG: StartTransaction
|
|||
DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 0/1/0, nestlvl: 1, children:
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: Skipping target shard interval 13300000 since SELECT query for it pruned away
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: Skipping target shard interval 13300001 since SELECT query for it pruned away
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
|
|
@ -1628,7 +1598,6 @@ DEBUG: predicate pruning for shardId 13300007
|
|||
DEBUG: distributed statement: INSERT INTO public.raw_events_first_13300002 AS citus_table_alias (user_id, "time", value_1, value_2, value_3, value_4) SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM public.raw_events_second_13300006 raw_events_second WHERE ((user_id = 6) AND ((hashint4(user_id) >= 0) AND (hashint4(user_id) <= 1073741823)))
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: Skipping target shard interval 13300003 since SELECT query for it pruned away
|
||||
DEBUG: ProcessQuery
|
||||
|
|
@ -1695,17 +1664,14 @@ DEBUG: predicate pruning for shardId 13300005
|
|||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: distributed statement: INSERT INTO public.raw_events_first_13300000 AS citus_table_alias (user_id, "time", value_1, value_2, value_3, value_4) SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM public.raw_events_second_13300004 raw_events_second WHERE ((user_id = 5) AND ((hashint4(user_id) >= '-2147483648'::integer) AND (hashint4(user_id) <= '-1073741825'::integer)))
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: Skipping target shard interval 13300001 since SELECT query for it pruned away
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
DEBUG: Skipping target shard interval 13300002 since SELECT query for it pruned away
|
||||
DEBUG: predicate pruning for shardId 13300004
|
||||
DEBUG: predicate pruning for shardId 13300005
|
||||
DEBUG: predicate pruning for shardId 13300006
|
||||
DEBUG: predicate pruning for shardId 13300007
|
||||
|
|
|
|||
Loading…
Reference in New Issue