Hi, PostgreSQL constantly crashes on this query: select dategrid, category, sum(cnt) from v_crime_grid group by dategrid, category; Where v_crime_grid is a materialized view, have columns "dategrid" int4, "category" int4, and "cnt" int8. Version is: PostgreSQL 10.0 on x86_64-pc-linux-gnu, compiled by gcc (Debian 7.2.0-8) 7.2.0, 64-bit GDB bt says: (gdb) bt #0 int8_avg_combine (fcinfo=0x55bdb92472d8) at ./build/../src/backend/utils/adt/numeric.c:4285 #1 0x000055bdb73b2e4d in advance_combine_function (pergroupstate=0x55bdb92481b8, pertrans=0x55bdb92471a8, aggstate=0x55bdb9239378) at ./build/../src/backend/executor/nodeAgg.c:1233 #2 combine_aggregates (aggstate=0x55bdb9239378, pergroup=<optimized out>) at ./build/../src/backend/executor/nodeAgg.c:1167 #3 0x000055bdb73b36bd in agg_retrieve_direct (aggstate=0x55bdb9239378) at ./build/../src/backend/executor/nodeAgg.c:2407 #4 ExecAgg (pstate=0x55bdb9239378) at ./build/../src/backend/executor/nodeAgg.c:2124 #5 0x000055bdb73a555d in ExecProcNode (node=0x55bdb9239378) at ./build/../src/include/executor/executor.h:250 #6 ExecutePlan (execute_once=<optimized out>, dest=0x55bdb9238dd8, direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x55bdb9239378, estate=0x55bdb9239138) at ./build/../src/backend/executor/execMain.c:1721 #7 standard_ExecutorRun (queryDesc=0x55bdb9202f48, direction=<optimized out>, count=0, execute_once=<optimized out>) at ./build/../src/backend/executor/execMain.c:363 #8 0x00007f5e48c1a0c5 in pgss_ExecutorRun (queryDesc=0x55bdb9202f48, direction=ForwardScanDirection, count=0, execute_once=<optimized out>) at ./build/../contrib/pg_stat_statements/pg_stat_statements.c:889 #9 0x000055bdb74dc456 in PortalRunSelect (portal=portal@entry=0x55bdb918a7a8, forward=forward@entry=1 '\001', count=0, count@entry=9223372036854775807, dest=dest@entry=0x55bdb9238dd8) at ./build/../src/backend/tcop/pquery.c:932 #10 0x000055bdb74dda40 in PortalRun (portal=portal@entry=0x55bdb918a7a8, count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=1 '\001', run_once=run_once@entry=1 '\001', dest=dest@entry=0x55bdb9238dd8, altdest=altdest@entry=0x55bdb9238dd8, completionTag=0x7ffd7dd99cd0 "") at ./build/../src/backend/tcop/pquery.c:773 #11 0x000055bdb74d9580 in exec_simple_query (query_string=0x55bdb9153348 "select dategrid, category, sum(cnt) from v_crime_grid group by dategrid, category;") at ./build/../src/backend/tcop/postgres.c:1099 #12 0x000055bdb74db551 in PostgresMain (argc=<optimized out>, argv=argv@entry=0x55bdb9188c50, dbname=<optimized out>, username=<optimized out>) at ./build/../src/backend/tcop/postgres.c:4090 #13 0x000055bdb721cd23 in BackendRun (port=0x55bdb91818b0) at ./build/../src/backend/postmaster/postmaster.c:4357 #14 BackendStartup (port=0x55bdb91818b0) at ./build/../src/backend/postmaster/postmaster.c:4029 #15 ServerLoop () at ./build/../src/backend/postmaster/postmaster.c:1753 #16 0x000055bdb746b7bf in PostmasterMain (argc=5, argv=0x55bdb9133e40) at ./build/../src/backend/postmaster/postmaster.c:1361 #17 0x000055bdb721e834 in main (argc=5, argv=0x55bdb9133e40) at ./build/../src/backend/main/main.c:228 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general