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| author | Federico Caselli <cfederico87@gmail.com> | 2021-10-14 21:45:57 +0200 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-06-18 14:57:26 -0400 |
| commit | db08a699489c9b0259579d7ff7fd6bf3496ca3a2 (patch) | |
| tree | 741feb8714d9f94f0ddfd03af437f94d2d5a505b /setup.cfg | |
| parent | 964c26feecc7607d6d3a66240c3f33f4ae9215d4 (diff) | |
| download | sqlalchemy-db08a699489c9b0259579d7ff7fd6bf3496ca3a2.tar.gz | |
rearchitect reflection for batched performance
Rearchitected the schema reflection API to allow some dialects to make use
of high performing batch queries to reflect the schemas of many tables at
once using much fewer queries. The new performance features are targeted
first at the PostgreSQL and Oracle backends, and may be applied to any
dialect that makes use of SELECT queries against system catalog tables to
reflect tables (currently this omits the MySQL and SQLite dialects which
instead make use of parsing the "CREATE TABLE" statement, however these
dialects do not have a pre-existing performance issue with reflection. MS
SQL Server is still a TODO).
The new API is backwards compatible with the previous system, and should
require no changes to third party dialects to retain compatibility;
third party dialects can also opt into the new system by implementing
batched queries for schema reflection.
Along with this change is an updated reflection API that is fully
:pep:`484` typed, features many new methods and some changes.
Fixes: #4379
Change-Id: I897ec09843543aa7012bcdce758792ed3d415d08
Diffstat (limited to 'setup.cfg')
| -rw-r--r-- | setup.cfg | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -128,6 +128,9 @@ profile_file = test/profiles.txt # create public database link test_link connect to scott identified by tiger # using 'xe'; oracle_db_link = test_link +# create public database link test_link2 connect to test_schema identified by tiger +# using 'xe'; +oracle_db_link2 = test_link2 # host name of a postgres database that has the postgres_fdw extension. # to create this run: @@ -162,8 +165,8 @@ mariadb = mariadb+mysqldb://scott:tiger@127.0.0.1:3306/test mariadb_connector = mariadb+mariadbconnector://scott:tiger@127.0.0.1:3306/test mssql = mssql+pyodbc://scott:tiger^5HHH@mssql2017:1433/test?driver=ODBC+Driver+13+for+SQL+Server mssql_pymssql = mssql+pymssql://scott:tiger@ms_2008 -docker_mssql = mssql+pymssql://scott:tiger^5HHH@127.0.0.1:1433/test +docker_mssql = mssql+pyodbc://scott:tiger^5HHH@127.0.0.1:1433/test?driver=ODBC+Driver+17+for+SQL+Server oracle = oracle+cx_oracle://scott:tiger@oracle18c/xe cxoracle = oracle+cx_oracle://scott:tiger@oracle18c/xe -oracle_oracledb = oracle+oracledb://scott:tiger@oracle18c/xe oracledb = oracle+oracledb://scott:tiger@oracle18c/xe +docker_oracle = oracle+cx_oracle://scott:tiger@127.0.0.1:1521/?service_name=XEPDB1
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