Comments (2)
Solved for simple NLJ with pr #409
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vraghavan=# explain select * from R, S where R.a=S.a;
QUERY PLAN
Gather Motion 3:1 (slice1; segments: 3) (cost=0.00..1324032.35 rows=1 width=16)
-> Nested Loop (cost=0.00..1324032.35 rows=1 width=16)
Join Filter: (r.a = s.a)
-> Table Scan on r (cost=0.00..431.00 rows=1 width=8)
-> Table Scan on s (cost=0.00..431.00 rows=1 width=8)
Planning time: 55.002 ms
Optimizer: PQO version 3.6.0
(7 rows)
from gporca.
Related Issues (20)
- make error on aarch64 with gcc 8.3.0 on archlinuxarm 64 HOT 8
- Memory leak when running JoinPlanWithRedistribute.mdp in debug mode
- Incorrect join partition elimination HOT 3
- Long plan generation utilising all available memory HOT 1
- make error on solaris HOT 3
- GPORCA doesn't support aarch64 platform.
- can orca apply to innodb?
- gporca occurs exception when using statistic from numeric(30, 8) column to optimize plan
- clang-format in Allman style always indents the contents of extern "C" blocks in C headers
- no <dxl:DistrOpfamilies> tag in gporca/server/dxl.xsd
- CHistogram should keep track of row count (cardinality)
- Orca optimizer single-threaded vs. multi-threaded HOT 3
- why COptCtxt to tls
- [question] why use `virtual` instead of `override`
- Delegating query optimization task to Orca HOT 1
- Orca - how to use
- Is there any formal grammar for the definition of query/plan?
- Should consider startup cost of inner table in NLJ? HOT 1
- Is a bug of CExpression.cpp:505?
- Incorrect result about group by SQL HOT 1
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