大约有 1,948 项符合查询结果（耗时：0.0154秒） [XML]
How to copy from CSV file to PostgreSQL table with headers in CSV file?
...because it uses native DB import commands. It supports Postgres as well as MYSQL and MS SQL.
import pandas as pd
df = pd.read_csv('table.csv')
uri_psql = 'postgresql+psycopg2://usr:pwd@localhost/db'
d6tstack.utils.pd_to_psql(df, uri_psql, 'table')
It is also useful for importing multiple CSVs, so...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...
A PostgreSQL "schema" is roughly the same as a MySQL "database". Having many databases on a PostgreSQL installation can get problematic; having many schemas will work with no trouble. So you definitely want to go with one database and multiple schemas within that database...
Why is IoC / DI not common in Python?
...rt psycopg
self.database_interface = psycopg
elif config_dbms_name == 'mysql':
...
Later code can then create a database interface by writing:
my_db_connection = self.database_interface()
# Do stuff with database.
Instead of the boilerplate factory functions that Java and C++ need, Pyth...
When to add what indexes in a table in Rails
...
Not the answer you're looking for? Browse other questions tagged mysql ruby-on-rails activerecord or ask your own question.
Using Transactions or SaveChanges(false) and AcceptAllChanges()?
...ich database it's talking to, Rollback() is called in case it's talking to MySql or something that doesn't have that automatic behavior.
– Jared
Jun 13 '16 at 20:52
...
LINQ-to-SQL vs stored procedures? [closed]
...
LINQ to Entities works with Postgres and MySql in addition to MSSQL. Not sure, but I thought I read there was something for Oracle around.
– bbqchickenrobot
Jul 8 '09 at 17:36
...
How to generate the “create table” sql statement for an existing table in postgreSQL
... Brilliant bit of code, especially for those of us coming from MySQL, using SHOW CREATE TABLE table_name. Additionally, I'm accessing a database with limited permissions, so this is perfect.
– Eric P
Mar 9 '18 at 22:59
...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...MS
before assuming all of this still holds.
I've been a Sybase ASE, MySQL, and SQL Server DBA on-and off since for almost a decade (along with application development in C, PHP, PL/SQL, C#.NET, and Ruby). So, I have no particular axe to grind in this (sometimes) holy war.
The historical per...
Why does Date.parse give incorrect results?
...split[dc]]=dtsplit[dc];
}
// uses assc array for standard mysql format
dstring[r] = '20'+df['yy']+'-'+df['mm']+'-'+df['dd'];
dstring[r] += ' '+df['HH']+':'+df['MM']+':'+df['ss'];
share
|
...
How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...quire a little configuration. Always use Unicode strings for SQL queries.
MySQL
In the connection string add:
charset='utf8',
use_unicode=True
E.g.
>>> db = MySQLdb.connect(host="localhost", user='root', passwd='passwd', db='sandbox', use_unicode=True, charset="utf8")
PostgreSQL
Ad...