WebAug 17, 2024 · The documentation is clear about plpgsql execute. It explicitly mentions that because plpgsql execute is dynamic, a plan is never cached. This means that for plpgsql execute, the execution is parsed, rewritten, planned and executed for each individual invocation. Example code for the use of execute: WebFeb 13, 2024 · Almost all the execution time is spent on that parallel sequential scan, and most of the rows are discarded, so I assume that the following index will make the query considerably faster: CREATE INDEX ON b (id); Share Improve this answer Follow answered Feb 13, 2024 at 15:31 Laurenz Albe 197k 17 186 239 Laurenz Albe,thanks for your kind …
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WebMay 1, 2024 · When Greenplum executes "normal" queries, each of Greenplum segments acts as an independent PostgreSQL instance which executes a plan created by GPDB … WebIn Greenplum Database, you can request any of the four standard transaction isolation levels. But internally, there are only two distinct isolation levels — read committed and … sohn tim lobinger
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WebDec 19, 2011 · 3) if there is an execution plan - that plan is (re-)used and the query executed 4) if there is no plan yet, an execution plan is determined 5) that plan is stored into the plan cache for later reuse 6) the query is executed The point is: ad-hoc SQL and stored procedures are treatly no differently. WebJul 27, 2024 · We have a GreenPlum Cluster which we have set up recently and getting this error on a single query run: current group id is 140611, group memory usage 40720 MB, group shared memory quota is 31320 MB, slot memory quota is 0 MB, global freechunks memory is 1044 MB, global safe memory threshold is 1048 MB (runaway_cleaner.c:197) … WebMar 10, 2016 · 2 Answers Sorted by: 5 Most likely you hit a locking issue. First thing to check is pg_locks - it would show you the current locks on the table. I bet your table is locked by some process, this is why truncate and drop table is hanging. Find the blocking query and terminate it, then you would be able to easily drop/truncate target table. sohn true treadmill