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PostgreSQL: SQL statement doesn't return rows
Posted: Mon 01 Jun 2015 14:26
by ron.dunn
I'm trying to execute the following PostgreSQL command through PyODBC:
dw_cur.execute ("copy load_abc from 'c:/landing_zone/abc.csv' with (format csv,header TRUE)")
PyODBC is throwing an exception with the message "SQL statement doesn't return rows". I believe this comes from the driver.
My connection string is:
'Driver={Devart ODBC Driver for PostgreSQL};Server=XXX;Database=XXX;Username=XXX;Password=XXX;UseUnicode=1'
Any suggestions?
Re: PostgreSQL: SQL statement doesn't return rows
Posted: Mon 01 Jun 2015 14:42
by ron.dunn
Here is the relevant section of an ODBC trace:
Code: Select all
XXX d00-b20 ENTER SQLExecDirectW
HSTMT 0x00000000039917A0
WCHAR * 0x0000000002E16D50 [ -3] "copy load_abc from 'c:/landing_zone/abc.csv' with (format csv,header TRUE)\ 0"
SDWORD -3
XXX d00-b20 EXIT SQLExecDirectW with return code -1 (SQL_ERROR)
HSTMT 0x00000000039917A0
WCHAR * 0x0000000002E16D50 [ -3] "copy load_abc from 'c:/landing_zone/abc.csv' with (format csv,header TRUE)\ 0"
SDWORD -3
DIAG [HY000] [Devart][ODBC][PostgreSQL]SQL statement doesn't return rows (52032928)
XXX d00-b20 ENTER SQLGetDiagRecW
SQLSMALLINT 3 <SQL_HANDLE_STMT>
SQLHANDLE 0x00000000039917A0
SQLSMALLINT 1
SQLWCHAR * 0x0000000000BDF320
SQLINTEGER * 0x0000000000BDF838
SQLWCHAR * 0x0000000003991DF0
SQLSMALLINT 1023
SQLSMALLINT * 0x0000000000BDF830
XXX d00-b20 EXIT SQLGetDiagRecW with return code 0 (SQL_SUCCESS)
SQLSMALLINT 3 <SQL_HANDLE_STMT>
SQLHANDLE 0x00000000039917A0
SQLSMALLINT 1
SQLWCHAR * 0x0000000000BDF320 [ 5] "HY000"
SQLINTEGER * 0x0000000000BDF838 (0)
SQLWCHAR * 0x0000000003991DF0 [ 59] "[Devart][ODBC][PostgreSQL]SQL statement doesn't return rows"
SQLSMALLINT 1023
SQLSMALLINT * 0x0000000000BDF830 (59)
Re: PostgreSQL: SQL statement doesn't return rows
Posted: Wed 03 Jun 2015 13:01
by AlexP
We can't reproduce the issue. The copy command is executed with no errors on the latest driver version 1.1.1. Please specify the driver version and the version of Python and PyODBC.
Code: Select all
Python 3.3.5 (v3.3.5:62cf4e77f785, Mar 9 2014, 10:37:12) [MSC v.1600 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information.
>>> import pyodbc
>>> con = pyodbc.connect('DSN=test_postgres')
>>> cur = con.cursor()
>>> cur.execute("copy emp from 'd:\emp.csv'");
<pyodbc.Cursor object at 0x02A4A0C8>
>>> con.commit()
>>>