#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f0b496c442a in __GI_abort () at abort.c:89
#2  0x000055e572b2ede4 in ExceptionalCondition (conditionName=0x55e572d09070 "!(list != ((List *) ((void *)0)))", errorType=0x55e572d08df7 "FailedAssertion", 
    fileName=0x55e572d08df0 "list.c", lineNumber=390) at assert.c:54
#3  0x000055e572840746 in list_nth_cell (list=0x0, n=1) at list.c:390
#4  0x000055e57284083b in list_nth (list=0x0, n=1) at list.c:413
#5  0x000055e5727d48f1 in adjust_partition_tlist (tlist=0x0, map=0x55e5738912f8) at execPartition.c:1448
#6  0x000055e5727d385e in ExecInitPartitionInfo (mtstate=0x55e573857808, resultRelInfo=0x55e573857268, proute=0x55e5738768c8, estate=0x55e573857018, partidx=0)
    at execPartition.c:765
#7  0x000055e5727cefe3 in ExecMergeMatched (mtstate=0x55e573857808, estate=0x55e573857018, slot=0x55e573870ba8, junkfilter=0x55e573877d20, tupleid=0x7ffebd80430a)
    at execMerge.c:205
#8  0x000055e5727cee5e in ExecMerge (mtstate=0x55e573857808, estate=0x55e573857018, slot=0x55e573870ba8, junkfilter=0x55e573877d20, resultRelInfo=0x55e573857268)
    at execMerge.c:127
#9  0x000055e572802f57 in ExecModifyTable (pstate=0x55e573857808) at nodeModifyTable.c:2229
#10 0x000055e5727d5d56 in ExecProcNodeFirst (node=0x55e573857808) at execProcnode.c:445
#11 0x000055e5727c93b7 in ExecProcNode (node=0x55e573857808) at ../../../src/include/executor/executor.h:237
#12 0x000055e5727cbdd2 in ExecutePlan (estate=0x55e573857018, planstate=0x55e573857808, use_parallel_mode=false, operation=CMD_MERGE, sendTuples=false, numberTuples=0, 
    direction=ForwardScanDirection, dest=0x55e573860720, execute_once=true) at execMain.c:1725
#13 0x000055e5727c99bf in standard_ExecutorRun (queryDesc=0x55e5737a6258, direction=ForwardScanDirection, count=0, execute_once=true) at execMain.c:363
#14 0x000055e5727c97d5 in ExecutorRun (queryDesc=0x55e5737a6258, direction=ForwardScanDirection, count=0, execute_once=true) at execMain.c:306
#15 0x000055e5729c1239 in ProcessQuery (plan=0x55e5738605a8, 
    sourceText=0x55e57377c4c8 "MERGE INTO public.pagg_tab_ml_p3 as target_0 \nUSING public.prt2_l_p3_p2 as ref_0 ON target_0.a = ref_0.a \nWHEN MATCHED   AND cast(null as tid) <= cast(null as tid)    THEN DELETE;", params=0x0, queryEnv=0x0, dest=0x55e573860720, completionTag=0x7ffebd804780 "") at pquery.c:161
#16 0x000055e5729c2c0b in PortalRunMulti (portal=0x55e5737e5b78, isTopLevel=true, setHoldSnapshot=false, dest=0x55e573860720, altdest=0x55e573860720, 
    completionTag=0x7ffebd804780 "") at pquery.c:1291
#17 0x000055e5729c21c8 in PortalRun (portal=0x55e5737e5b78, count=9223372036854775807, isTopLevel=true, run_once=true, dest=0x55e573860720, altdest=0x55e573860720, 
    completionTag=0x7ffebd804780 "") at pquery.c:804
#18 0x000055e5729bbd20 in exec_simple_query (
    query_string=0x55e57377c4c8 "MERGE INTO public.pagg_tab_ml_p3 as target_0 \nUSING public.prt2_l_p3_p2 as ref_0 ON target_0.a = ref_0.a \nWHEN MATCHED   AND cast(null as tid) <= cast(null as tid)    THEN DELETE;") at postgres.c:1122
#19 0x000055e5729c02ed in PostgresMain (argc=1, argv=0x55e5737ae238, dbname=0x55e5737ae098 "regression", username=0x55e5737ae070 "jcasanov") at postgres.c:4150
#20 0x000055e572918861 in BackendRun (port=0x55e57379e070) at postmaster.c:4364
#21 0x000055e572917f5a in BackendStartup (port=0x55e57379e070) at postmaster.c:4036
#22 0x000055e572914299 in ServerLoop () at postmaster.c:1709
#23 0x000055e572913ac7 in PostmasterMain (argc=3, argv=0x55e573776210) at postmaster.c:1382
#24 0x000055e572837605 in main (argc=3, argv=0x55e573776210) at main.c:228