PostgreSQL 8.2 Documentation.........................................................................1327 49.6. Index Cost Estimation Functions...............................................................................1328 50 ...............................................................................1346 54.1. Row Estimation Examples...................................................................................... shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The default is 128 megabytes (128MB). 17.6.3. Genetic Query Optimizer geqo (boolean)0 码力 | 1748 页 | 13.12 MB | 1 年前3
PostgreSQL 8.1.11 Documentation.........................................................................1219 48.6. Index Cost Estimation Functions...............................................................................1220 49 ...............................................................................1236 52.1. Row Estimation Examples...................................................................................... shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The value is measured in disk pages, which are normally 8192 bytes each. The default0 码力 | 1582 页 | 12.19 MB | 1 年前3
PostgreSQL 8.1 Documentation.........................................................................1212 48.6. Index Cost Estimation Functions...............................................................................1213 49 ...............................................................................1229 52.1. Row Estimation Examples...................................................................................... shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The value is measured in disk pages, which are normally 8192 bytes each. The default0 码力 | 1548 页 | 11.54 MB | 1 年前3
PostgreSQL 8.2 Documentation.........................................................................1327 49.6. Index Cost Estimation Functions...............................................................................1328 50 ...............................................................................1346 54.1. Row Estimation Examples...................................................................................... shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The default is 128 megabytes (128MB). 17.6.3. Genetic Query Optimizer geqo (boolean)0 码力 | 1762 页 | 5.43 MB | 1 年前3
PostgreSQL 9.4 Documentation.........................................................................2077 55.6. Index Cost Estimation Functions...............................................................................2078 56 ...............................................................................2122 61.1. Row Estimation Examples...................................................................................... Options .......................................................................2411 F.32.1.3. Cost Estimation Options...................................................................2412 xli F.32.1.4.0 码力 | 2603 页 | 6.05 MB | 1 年前3
PostgreSQL 9.5 Documentation.........................................................................2200 58.6. Index Cost Estimation Functions...............................................................................2201 59 ...............................................................................2252 65.1. Row Estimation Examples...................................................................................... Options .......................................................................2548 F.31.1.3. Cost Estimation Options...................................................................2549 F.31.1.4. Updatability0 码力 | 2714 页 | 6.33 MB | 1 年前3
PostgreSQL 8.3 Documentation.........................................................................1475 50.6. Index Cost Estimation Functions...............................................................................1476 51 ...............................................................................1495 55.1. Row Estimation Examples...................................................................................... shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The default is 128 megabytes (128MB). 18.6.3. Genetic Query Optimizer geqo (boolean)0 码力 | 2143 页 | 4.58 MB | 1 年前3
PostgreSQL 8.3 Documentation.........................................................................1389 50.6. Index Cost Estimation Functions........................................................................1390 xxiv 51 ...............................................................................1409 55.1. Row Estimation Examples..................................................................................1409 shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The default is 128 megabytes (128MB). 363 Chapter 18. Server Configuration 18.6.30 码力 | 2015 页 | 4.54 MB | 1 年前3
PostgreSQL 8.0 Documentation..........................................................................1050 47. Index Cost Estimation Functions ....................................................................................1051 shared memory allocated by PostgreSQL, nor does it reserve kernel disk cache; it is used only for estimation purposes. The value is measured in disk pages, which are normally 8192 bytes each. The default num can be a literal integer or a host variable containing an integer. Possible fields are: CARDINALITY (integer) number of rows in the result set DATA actual data item (therefore, the data type of0 码力 | 1332 页 | 9.76 MB | 1 年前3
PostgreSQL 9.3 Documentation.........................................................................2007 54.6. Index Cost Estimation Functions...............................................................................2008 55 ...............................................................................2049 60.1. Row Estimation Examples...................................................................................... Options .......................................................................2972 F.31.1.3. Cost Estimation Options...................................................................2972 F.31.1.4. Updatability0 码力 | 3183 页 | 7.53 MB | 1 年前3
共 113 条
- 1
- 2
- 3
- 4
- 5
- 6
- 12













