PostgreSQL 8.0 Documentation1121 46.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1122 46.3.1. Future Implementation Tasks for PostgreSQL GEQO .................................1123 probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the environment variable PGOPTIONS can be used for this purpose on the client side: env PGOPTIONS=’-c geqo=off’ psql (This works for any libpq-based client application, not just psql.) Note that this won’t0 码力 | 1422 页 | 9.92 MB | 1 年前3
PostgreSQL 8.0 Documentation.1048 46.3. Genetic Query Optimization (GEQO) in PostgreSQL .......................................1049 46.3.1. Future Implementation Tasks for PostgreSQL GEQO ..........................1050 46.4. Further probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the environment variable PGOPTIONS can be used for this purpose on the client side: env PGOPTIONS=’-c geqo=off’ psql (This works for any libpq-based client application, not just psql.) Note that this won’t0 码力 | 1332 页 | 9.76 MB | 1 年前3
PostgreSQL 8.1 Documentation1202 47.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1203 47.3.1. Future Implementation Tasks for PostgreSQL GEQO .................................1204 probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the environment variable PGOPTIONS can be used for this purpose on the client side: env PGOPTIONS=’-c geqo=off’ psql (This works for any libpq-based client application, not just psql.) Note that this won’t0 码力 | 1548 页 | 11.54 MB | 1 年前3
PostgreSQL 8.1.11 Documentation1209 47.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1210 47.3.1. Future Implementation Tasks for PostgreSQL GEQO .................................1211 probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the environment variable PGOPTIONS can be used for this purpose on the client side: env PGOPTIONS=’-c geqo=off’ psql (This works for any libpq-based client application, not just psql.) Note that this won’t0 码力 | 1582 页 | 12.19 MB | 1 年前3
PostgreSQL 8.2 Documentation1318 48.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1319 48.3.1. Future Implementation Tasks for PostgreSQL GEQO .................................1320 probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the environment variable PGOPTIONS can be used for this purpose on the client side: env PGOPTIONS=’-c geqo=off’ psql (This works for any libpq-based client application, not just psql.) Note that this won’t0 码力 | 1748 页 | 13.12 MB | 1 年前3
PostgreSQL 9.0 Documentation...1681 50.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1682 50.3.1. Generating Possible Plans with GEQO........................................... ..............1683 50.3.2. Future Implementation Tasks for PostgreSQL GEQO .................................1683 50.4. Further Reading................................................................. Optimizer.............................................................................1860 E.23.3.1.4. GEQO..................................................................................1860 E.23.3.1.5.0 码力 | 2561 页 | 5.55 MB | 1 年前3
PostgreSQL 9.0 Documentation.......1575 50.3. Genetic Query Optimization (GEQO) in PostgreSQL .......................................1576 50.3.1. Generating Possible Plans with GEQO.............................................. ....1577 50.3.2. Future Implementation Tasks for PostgreSQL GEQO ..........................1577 50.4. Further Reading.................................................................................. 3. Optimizer......................................................................1744 E.23.3.1.4. GEQO...........................................................................1745 E.23.3.1.5. Optimizer0 码力 | 2401 页 | 5.50 MB | 1 年前3
PostgreSQL 8.3 Documentation...1465 49.3. Genetic Query Optimization (GEQO) in PostgreSQL ..............................................1466 49.3.1. Generating Possible Plans with GEQO........................................... ..............1467 49.3.2. Future Implementation Tasks for PostgreSQL GEQO .................................1467 49.4. Further Reading................................................................. probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the0 码力 | 2143 页 | 4.58 MB | 1 年前3
PostgreSQL 8.3 Documentation.......1379 49.3. Genetic Query Optimization (GEQO) in PostgreSQL .......................................1380 49.3.1. Generating Possible Plans with GEQO.............................................. ....1381 49.3.2. Future Implementation Tasks for PostgreSQL GEQO ..........................1381 49.4. Further Reading.................................................................................. probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the0 码力 | 2015 页 | 4.54 MB | 1 年前3
PostgreSQL 8.4 Documentation.......1491 49.3. Genetic Query Optimization (GEQO) in PostgreSQL .......................................1492 49.3.1. Generating Possible Plans with GEQO.............................................. ....1493 49.3.2. Future Implementation Tasks for PostgreSQL GEQO ..........................1493 49.4. Further Reading.................................................................................. probabilistic search through a limited number of possibilities. (The switch-over threshold is set by the geqo_threshold run-time parameter.) The genetic search takes less time, but it won’t necessarily find the0 码力 | 2224 页 | 5.05 MB | 1 年前3
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