PostgreSQL 8.1.11 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 1582 页 | 12.19 MB | 1 年前3PostgreSQL 8.1 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 1548 页 | 11.54 MB | 1 年前3PostgreSQL 8.2 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 1762 页 | 5.43 MB | 1 年前3PostgreSQL 8.2 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 1748 页 | 13.12 MB | 1 年前3PostgreSQL 9.5.25 Documentation
common values into one group row that represents all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake columns whose data type lacks an equality function (Oleksandr Shulgin) • Speed up CRC (cyclic redundancy check) computations and switch to CRC-32C (Abhijit Menon- Sen, Heikki Linnakangas) • Improve bitmap0 码力 | 2558 页 | 6.27 MB | 1 年前3PostgreSQL 9.5 Documentation
common values into one group row that represents all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake columns whose data type lacks an equality function (Oleksandr Shulgin) • Speed up CRC (cyclic redundancy check) computations and switch to CRC-32C (Abhijit Menon-Sen, Heikki Linnakangas) • Improve bitmap0 码力 | 2714 页 | 6.33 MB | 1 年前3PostgreSQL 8.3 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 2143 页 | 4.58 MB | 1 年前3PostgreSQL 8.3 Documentation
values into one group row that is representative of all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 2015 页 | 4.54 MB | 1 年前3PostgreSQL 8.4 Documentation
common values into one group row that represents all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * strongly recommended when sending parameter values in binary format, because binary format has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 2224 页 | 5.05 MB | 1 年前3PostgreSQL 8.4 Documentation
common values into one group row that represents all rows in the group. This is done to eliminate redundancy in the output and/or compute aggregates that apply to these groups. For instance: => SELECT * parameter values in binary format, because binary format 573 Chapter 30. libpq - C Library has less redundancy than text format and so there is less chance that the server will detect a type mismatch mistake0 码力 | 2371 页 | 5.09 MB | 1 年前3
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