mirror of https://github.com/citusdata/citus.git
455 lines
24 KiB
Plaintext
455 lines
24 KiB
Plaintext
--
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-- MULTI_NULL_MINMAX_VALUE_PRUNING
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--
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-- This test checks that we can handle null min/max values in shard statistics
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-- and that we don't partition or join prune shards that have null values.
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SET citus.next_shard_id TO 760000;
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-- print whether we're using version > 9 to make version-specific tests clear
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SHOW server_version \gset
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SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
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version_above_nine
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--------------------
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t
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(1 row)
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SET client_min_messages TO DEBUG2;
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SET citus.explain_all_tasks TO on;
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-- to avoid differing explain output - executor doesn't matter,
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-- because were testing pruning here.
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SET citus.task_executor_type TO 'real-time';
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-- Change configuration to treat lineitem and orders tables as large
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SET citus.large_table_shard_count TO 2;
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SELECT shardminvalue, shardmaxvalue from pg_dist_shard WHERE shardid = 290000;
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shardminvalue | shardmaxvalue
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---------------+---------------
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1 | 1509
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(1 row)
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SELECT shardminvalue, shardmaxvalue from pg_dist_shard WHERE shardid = 290001;
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shardminvalue | shardmaxvalue
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---------------+---------------
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1509 | 2951
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(1 row)
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-- Check that partition and join pruning works when min/max values exist
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-- Adding l_orderkey = 1 to make the query not router executable
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EXPLAIN (COSTS FALSE)
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SELECT l_orderkey, l_linenumber, l_shipdate FROM lineitem WHERE l_orderkey = 9030 or l_orderkey = 1;
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QUERY PLAN
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-----------------------------------------------------------------------
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Custom Scan (Citus Real-Time)
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Task Count: 2
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Bitmap Heap Scan on lineitem_290000 lineitem
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Recheck Cond: ((l_orderkey = 9030) OR (l_orderkey = 1))
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-> BitmapOr
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-> Bitmap Index Scan on lineitem_pkey_290000
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Index Cond: (l_orderkey = 9030)
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-> Bitmap Index Scan on lineitem_pkey_290000
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Index Cond: (l_orderkey = 1)
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Bitmap Heap Scan on lineitem_290004 lineitem
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Recheck Cond: ((l_orderkey = 9030) OR (l_orderkey = 1))
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-> BitmapOr
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-> Bitmap Index Scan on lineitem_pkey_290004
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Index Cond: (l_orderkey = 9030)
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-> Bitmap Index Scan on lineitem_pkey_290004
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Index Cond: (l_orderkey = 1)
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(21 rows)
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EXPLAIN (COSTS FALSE)
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SELECT sum(l_linenumber), avg(l_linenumber) FROM lineitem, orders
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WHERE l_orderkey = o_orderkey;
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DEBUG: join prunable for intervals [1,1509] and [8997,14946]
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DEBUG: join prunable for intervals [1509,2951] and [8997,14946]
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DEBUG: join prunable for intervals [2951,4455] and [8997,14946]
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DEBUG: join prunable for intervals [4480,5986] and [8997,14946]
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DEBUG: join prunable for intervals [8997,10560] and [1,5986]
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DEBUG: join prunable for intervals [10560,12036] and [1,5986]
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DEBUG: join prunable for intervals [12036,13473] and [1,5986]
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DEBUG: join prunable for intervals [13473,14947] and [1,5986]
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QUERY PLAN
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------------------------------------------------------------------------------------------------------
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Aggregate
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-> Custom Scan (Citus Real-Time)
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Task Count: 8
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290003 on lineitem_290003 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290002 on lineitem_290002 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290005 on lineitem_290005 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290007 on lineitem_290007 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290006 on lineitem_290006 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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(60 rows)
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-- Now set the minimum value for a shard to null. Then check that we don't apply
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-- partition or join pruning for the shard with null min value.
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UPDATE pg_dist_shard SET shardminvalue = NULL WHERE shardid = 290000;
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EXPLAIN (COSTS FALSE)
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SELECT l_orderkey, l_linenumber, l_shipdate FROM lineitem WHERE l_orderkey = 9030;
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QUERY PLAN
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-------------------------------------------------------------------------------
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Custom Scan (Citus Real-Time)
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Task Count: 2
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Index Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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Index Cond: (l_orderkey = 9030)
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Index Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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Index Cond: (l_orderkey = 9030)
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(11 rows)
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EXPLAIN (COSTS FALSE)
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SELECT sum(l_linenumber), avg(l_linenumber) FROM lineitem, orders
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WHERE l_orderkey = o_orderkey;
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DEBUG: join prunable for intervals [1509,2951] and [8997,14946]
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DEBUG: join prunable for intervals [2951,4455] and [8997,14946]
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DEBUG: join prunable for intervals [4480,5986] and [8997,14946]
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DEBUG: join prunable for intervals [8997,10560] and [1,5986]
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DEBUG: join prunable for intervals [10560,12036] and [1,5986]
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DEBUG: join prunable for intervals [12036,13473] and [1,5986]
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DEBUG: join prunable for intervals [13473,14947] and [1,5986]
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QUERY PLAN
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------------------------------------------------------------------------------------------------------
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Aggregate
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-> Custom Scan (Citus Real-Time)
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Task Count: 9
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290003 on lineitem_290003 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290005 on lineitem_290005 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290002 on lineitem_290002 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290007 on lineitem_290007 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290006 on lineitem_290006 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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(67 rows)
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-- Next, set the maximum value for another shard to null. Then check that we
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-- don't apply partition or join pruning for this other shard either.
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UPDATE pg_dist_shard SET shardmaxvalue = NULL WHERE shardid = 290001;
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EXPLAIN (COSTS FALSE)
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SELECT l_orderkey, l_linenumber, l_shipdate FROM lineitem WHERE l_orderkey = 9030;
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QUERY PLAN
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-------------------------------------------------------------------------------
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Custom Scan (Citus Real-Time)
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Task Count: 3
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Index Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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Index Cond: (l_orderkey = 9030)
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Index Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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Index Cond: (l_orderkey = 9030)
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Index Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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Index Cond: (l_orderkey = 9030)
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(15 rows)
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EXPLAIN (COSTS FALSE)
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SELECT sum(l_linenumber), avg(l_linenumber) FROM lineitem, orders
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WHERE l_orderkey = o_orderkey;
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DEBUG: join prunable for intervals [2951,4455] and [8997,14946]
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DEBUG: join prunable for intervals [4480,5986] and [8997,14946]
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DEBUG: join prunable for intervals [8997,10560] and [1,5986]
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DEBUG: join prunable for intervals [10560,12036] and [1,5986]
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DEBUG: join prunable for intervals [12036,13473] and [1,5986]
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DEBUG: join prunable for intervals [13473,14947] and [1,5986]
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QUERY PLAN
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------------------------------------------------------------------------------------------------------
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Aggregate
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-> Custom Scan (Citus Real-Time)
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Task Count: 10
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290003 on lineitem_290003 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290002 on lineitem_290002 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290005 on lineitem_290005 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290007 on lineitem_290007 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290006 on lineitem_290006 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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(74 rows)
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-- Last, set the minimum value to 0 and check that we don't treat it as null. We
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-- should apply partition and join pruning for this shard now.
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UPDATE pg_dist_shard SET shardminvalue = '0' WHERE shardid = 290000;
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EXPLAIN (COSTS FALSE)
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SELECT l_orderkey, l_linenumber, l_shipdate FROM lineitem WHERE l_orderkey = 9030;
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QUERY PLAN
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-------------------------------------------------------------------------------
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Custom Scan (Citus Real-Time)
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Task Count: 2
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Index Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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Index Cond: (l_orderkey = 9030)
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Index Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
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Index Cond: (l_orderkey = 9030)
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(11 rows)
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EXPLAIN (COSTS FALSE)
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SELECT sum(l_linenumber), avg(l_linenumber) FROM lineitem, orders
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WHERE l_orderkey = o_orderkey;
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DEBUG: join prunable for intervals [0,1509] and [8997,14946]
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DEBUG: join prunable for intervals [2951,4455] and [8997,14946]
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DEBUG: join prunable for intervals [4480,5986] and [8997,14946]
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DEBUG: join prunable for intervals [8997,10560] and [1,5986]
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DEBUG: join prunable for intervals [10560,12036] and [1,5986]
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DEBUG: join prunable for intervals [12036,13473] and [1,5986]
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DEBUG: join prunable for intervals [13473,14947] and [1,5986]
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QUERY PLAN
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------------------------------------------------------------------------------------------------------
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Aggregate
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-> Custom Scan (Citus Real-Time)
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Task Count: 9
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Tasks Shown: All
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290000 on lineitem_290000 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290001 on lineitem_290001 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57638 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290002 on lineitem_290002 lineitem
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-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
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-> Task
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Node: host=localhost port=57637 dbname=regression
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-> Aggregate
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-> Merge Join
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Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
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-> Index Only Scan using lineitem_pkey_290003 on lineitem_290003 lineitem
|
|
-> Index Only Scan using orders_pkey_290008 on orders_290008 orders
|
|
-> Task
|
|
Node: host=localhost port=57638 dbname=regression
|
|
-> Aggregate
|
|
-> Merge Join
|
|
Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
|
|
-> Index Only Scan using lineitem_pkey_290004 on lineitem_290004 lineitem
|
|
-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
|
|
-> Task
|
|
Node: host=localhost port=57637 dbname=regression
|
|
-> Aggregate
|
|
-> Merge Join
|
|
Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
|
|
-> Index Only Scan using lineitem_pkey_290005 on lineitem_290005 lineitem
|
|
-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
|
|
-> Task
|
|
Node: host=localhost port=57638 dbname=regression
|
|
-> Aggregate
|
|
-> Merge Join
|
|
Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
|
|
-> Index Only Scan using lineitem_pkey_290006 on lineitem_290006 lineitem
|
|
-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
|
|
-> Task
|
|
Node: host=localhost port=57637 dbname=regression
|
|
-> Aggregate
|
|
-> Merge Join
|
|
Merge Cond: (lineitem.l_orderkey = orders.o_orderkey)
|
|
-> Index Only Scan using lineitem_pkey_290007 on lineitem_290007 lineitem
|
|
-> Index Only Scan using orders_pkey_290009 on orders_290009 orders
|
|
(67 rows)
|
|
|
|
-- Set minimum and maximum values for two shards back to their original values
|
|
UPDATE pg_dist_shard SET shardminvalue = '1' WHERE shardid = 290000;
|
|
UPDATE pg_dist_shard SET shardmaxvalue = '4964' WHERE shardid = 290001;
|
|
SET client_min_messages TO NOTICE;
|