将 pyodbc 连接到 Postgres [英] Connect pyodbc to Postgres
问题描述
尝试使用 pyodbc 连接到 Postgres.
Trying to connect to Postgres using pyodbc.
我可以使用 isql 连接到数据库:
I can connect to the DB with isql:
echo "select 1" | isql -v my-connector
返回:
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL> select 1
+------------+
| ?column? |
+------------+
| 1 |
+------------+
SQLRowCount returns 1
1 rows fetched
但是当我尝试与 pyodbc 连接时:
But when I try to connect with pyodbc:
import pyodbc
con = pyodbc.connect("DRIVER={PostgreSQL Unicode}; DATABASE=<dbname>; UID=<username>; PWD=<password>; SERVER=localhost; PORT=5432;")
我收到以下错误:
pyodbc.Error: ('08001', '[08001] [unixODBC]connction string lacks some options (202) (SQLDriverConnect)')
obdc.ini 文件如下所示:
obdc.ini file looks like this:
[my-connector]
Description = PostgreSQL connection to '<dbname>' database
Driver = PostgreSQL Unicode
Database = <dbname>
Servername = localhost
UserName = <username>
Password = <password>
Port = 5432
Protocol = 9.3
ReadOnly = No
RowVersioning = No
ShowSystemTables = No
ShowOidColumn = No
FakeOidIndex = No
ConnSettings =
odbcinst.ini 文件如下所示:
odbcinst.ini file looks like this:
[PostgreSQL ANSI]
Description = PostgreSQL ODBC driver (ANSI version)
Driver = psqlodbca.so
Setup = libodbcpsqlS.so
Debug = 0
CommLog = 1
UsageCount = 1
[PostgreSQL Unicode]
Description = PostgreSQL ODBC driver (Unicode version)
Driver = psqlodbcw.so
Setup = libodbcpsqlS.so
Debug = 0
CommLog = 1
UsageCount = 1
注意事项:
- Ubuntu 14.04
- Python 3
- PostgreSQL 9.3
我过去使用 psycopg2 连接到 Postgres,但是我现在的公司使用 Netezza、Postgres 和 MySQL.我想编写1个连接模块,并使用不同的驱动程序连接到不同的数据库.任何帮助将不胜感激.
I have used psycopg2 in the past to connect to Postgres, however my current company uses Netezza, Postgres, and MySQL. I want to write 1 connection module, and use different drivers to connect to the different databases. Any help would be greatly appreciated.
--谢谢
推荐答案
由于您已经在 odbc.ini 中定义了一个可用的 DSN,您可以直接使用它:
Since you already have a working DSN defined in odbc.ini you can just use that:
con = pyodbc.connect("DSN=my-connector")
另外,作为记录,连接字符串中的额外空格可能会混淆问题,因为这对我来说很好,至少在 Python 2.7 下
Also, for the record, that extra whitespace in your connection string may have been confusing the issue because this worked fine for me, under Python 2.7 at least
import pyodbc
conn_str = (
"DRIVER={PostgreSQL Unicode};"
"DATABASE=postgres;"
"UID=postgres;"
"PWD=whatever;"
"SERVER=localhost;"
"PORT=5432;"
)
conn = pyodbc.connect(conn_str)
crsr = conn.execute("SELECT 123 AS n")
row = crsr.fetchone()
print(row)
crsr.close()
conn.close()
这篇关于将 pyodbc 连接到 Postgres的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!