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Access asyncpg Record field by key on raw query#207
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vmarkovtsev merged 1 commit intoencode:masterfrom May 12, 2020
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Access asyncpg Record field by key on raw query#207vmarkovtsev merged 1 commit intoencode:masterfrom
vmarkovtsev merged 1 commit intoencode:masterfrom
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vmarkovtsev
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May 12, 2020
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Interesting. This line was introduced in 5fdf35a by @pvanliefland I wonder if there is some secret hidden sense in it... Maybe |
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Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
vmarkovtsev
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Oct 19, 2020
Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
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Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
vmarkovtsev
added a commit
to vmarkovtsev/databases
that referenced
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Oct 20, 2020
Changelog: - Use backend native fetch_val() implementation when available (encode#132) - Replace psycopg2-binary with psycopg2 (encode#198) (encode#204) - Speed up PostgresConnection fetch() and iterate() (encode#193) - Access asyncpg Record field by key on raw query (encode#207) - Fix type hinting for sqlite backend (encode#227) - Allow setting min_size and max_size in postgres DSN (encode#210) - Add option pool_recycle in postgres DSN (encode#233) - Fix SQLAlchemy DDL statements (encode#226) - Make fetch_val call fetch_one for type conversion (encode#246) - Allow extra transaction options (encode#242) - Unquote username and password in DatabaseURL (encode#248)
vmarkovtsev
added a commit
that referenced
this pull request
Oct 20, 2020
Changelog: - Use backend native fetch_val() implementation when available (#132) - Replace psycopg2-binary with psycopg2 (#198) (#204) - Speed up PostgresConnection fetch() and iterate() (#193) - Access asyncpg Record field by key on raw query (#207) - Fix type hinting for sqlite backend (#227) - Allow setting min_size and max_size in postgres DSN (#210) - Add option pool_recycle in postgres DSN (#233) - Fix SQLAlchemy DDL statements (#226) - Make fetch_val call fetch_one for type conversion (#246) - Allow extra transaction options (#242) - Unquote username and password in DatabaseURL (#248)
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I am using postgresql (asyncpg), and have a result set of about 5,000 records with 12 columns.
When serializing the result set to another type I noticed that the step of reading the results from
databases.backends.postgres.Recordstep was a bit of a bottleneck.After digging into the code I noticed that when there is no column map, the code was taking the
asyncpg.Recordobject and turning its keys into a tuple and then doing an index lookup based on the key. I'm unclear on if this step is necessary, because you can access the fields on theasyncpg.Recordby key directly via a dict lookup.After applying this change, the amount of time to serialize the result set I was working with was reduced rather dramatically (between 40-60%). I ran the unit tests and saw that they all past, but am happy to add others if there are cases you would like.