pyodbc

问题 Over a year ago someone asked this question: Execute .sql files that are used to run in SQL Management Studio in python. I am writing a script in python that connects to a SQL server and creates and populates a database based on SQL commands in a large (several GBs) .sql file. It looks like SQLCMD requires a download and install of SQL Server Express. Are there other ways to execute a .sql file from python without requiring everyone who uses my script to download and install SQL Server? Does

问题 I know pyodbc is an older project and probably more featureful and robust, but is there anything about its design (based on components of compiled C code), that would make it preferable to a pure Python implementation, such as pypyodbc? I do a lot of ETL work and am thinking of switching from a Linux/Jython/JDBC approach to Windows/Cygwin/Python/ODBC approach. 回答1: Potential advantages of pyodbc over pypyodbc by being written in C would be: speed - see the pypyodbc wiki comparison more

问题 I have pyODBC installed for Python 3.2 and I am attempting to update a SQL Server 2008 R2 database that I created as a test. I have no problem retrieving data and that has always worked. However when the program performs a cursor.execute("sql") to insert or delete a row then it does not work - no error, nothing. The response is as if I am successful updating the database but no changes are reflected. The code below essentially is creating a dictionary (I have plans for this later) and just

问题 The nutshell of my problem is that my script cannot write complete unicode strings (retrieved from a db) to a csv, instead only the first character of each string is written to the file. eg: U,1423.0,831,1,139 Where the output should be: University of Washington Students,1423.0,831,1,139 Some background: I'm connecting to an MSSQL database using pyodbc. I have my odbc config file set up for unicode, and connect to the db as follows: p.connect("DSN=myserver;UID=username;PWD=password;DATABASE

问题 I'm using pyodbc with SQL Server 2000. I want to be able to insert a row and get the auto incremented row id value back? Any ideas? Here's what I have so far: cursor.execute("insert into products(id, name) values ('pyodbc', 'awesome library')") cnxn.commit() 回答1: Sorry, I asked too soon, it's addressed in their FAQ Use "SELECT @@IDENTITY". 来源： https://stackoverflow.com/questions/2883722/pyodbc-on-sql-server-how-can-i-do-an-insert-and-get-the-row-id-back

问题 I've written a short python script which tries to import the pyodbc extension package so I can access my SQL table. import pyodbc as pyodbc cnxn = pyodbc.connect('Driver={SQL Server};' 'Server=DESKTOP-UO8KJOP;' 'Database=ExamplePFData' 'Trusted_Connection=yes;') I have definitely installed the extension by using: pip install pyodbc. And when I go to install it again, cmd says: Requirement already satisfied: pyodbc in ... and I've found the pyd file in my directories. I have also tried

问题 I am attempting to write a Python script that can take Excel sheets and import them into my SQL Server Express (with Windows Authentication) database as tables. To do this, I am using pandas to read the Excel files into a pandas DataFrame , I then hope to use pandas.to_sql() to import the data into my database. To use this function, however, I need to use sqlalchemy.create_engine() . I am able to connect to my database using pyodbc alone, and run test queries. This conection is done with the

问题 I am currently querying data into dataframe via the pandas.io.sql.read_sql() command. I wanted to parallelize the calls similar to what this guys is advocating: (Embarrassingly parallel database calls with Python (PyData Paris 2015 )) Something like (very general): pools = [ThreadedConnectionPool(1,20,dsn=d) for d in dsns] connections = [pool.getconn() for pool in pools] parallel_connection = ParallelConnection(connections) pandas_cursor = parallel_connection.cursor() pandas_cursor.execute(my

问题 I'm trying to automate data collection from the results of an online form, compile them into an Excel file, and then upload the data from the Excel file into Access. I have a Python script that does this for another database and works perfectly fine, but the same code does not work for the new database for some reason. Using pydobc, I'm able to successfully connect to the database and perform simple SELECT and INSERT statements such as: DBcursor.execute("insert into Table1(Field1, Field2)

问题 I am trying to call a stored procedure that creates a Database from pyodbc The Following is a minimal example of the code import pyodbc conn = pyodbc.connect("Driver={SQL Server};Server=SERVERNAME;Trusted_Connection=yes;") cursor=conn.cursor() cursor.execute("""\ DECLARE @RC int DECLARE @ClientName varchar(255) SET @ClientName = 'Test' EXECUTE @RC = [DB_NAME].[SCHEMA].[sp_NAME] @ClientName """) conn.commit() The code should ideally create a Database named ' Test ' in the SQL Server Instance.