I have a csv file that I'd like to parse in Qt. I'd like to use the sql plugin, but I'm not sure how to get things set up. I currently am unable to open the .csvfile from my Qt app--I have to manually open it then start my app in hopes to query from it.
If the file I'm trying to read isn't manually opened before I begin my app, I get the following driver error:
[Microsoft][ODBC Excel Driver] External table is not in the expected format.
[Microsoft][ODBC Excel Driver] General Warning Unable to open registry key 'Temporary (volatile) Jet DSN for process 0x1ae0 Thread 0x1f2c DBC 0x4c52a4 Excel.' QODBC3: Unable to connect.
Here's my setup...
Qt Creator Build/Version:
I am working in Qt 5.3 which I did not build from source--I downloaded the installer.
I have configured a few debugging kits, but the one i'm using currently uses the MSVC 2012 openGL 32 bit compiler (which I've got set to default).
I have both Visual Studio 2012 AND 2010 on my machine, which is 64bit.
I didn't have to make the sql drivers, they came installed already (available drivers: () ("QSQLITE", "QMYSQL", "QMYSQL3", "QODBC", "QODBC3", "QPSQL", "QPSQL7"))
My .pro file hooks to the sql plugin:
QT += core gui network sql
And I've got the following includes:
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlError>
This is my code that establishes an Excel database connection and attempts a query:
QSqlDatabase db = QSqlDatabase::addDatabase("QODBC");
QString pathString = QString("C:\\MY_FILES\\test_work\\Xena\\Xena2544-2G\\Reports\\asdf_SN1_RFC2544_7_port_verify.csv");
db.setDatabaseName("DRIVER={Microsoft Excel Driver (*.xls)};DBQ=" + pathString );
if (!db.open())
{
QSqlError er = db.lastError();
QMessageBox::information(0, "Error", er.text());
}
if(db.open())
{
QSqlQuery query("select * from [" + QString("asdf_SN1_RFC2544_7_port_verify") + "$B13]"); //NEVER GETS HERE UNLESS i ALREADY MANUALLY OPENED THE FILE BEFORE RUNNING CODE.
QString process1Result = query.value(0).toString();
ui->verifyUnit1Status_lb->setText(process1Result);
}
File Permissions
- Full control
- modify
- read& execute
- read
- write
I'd really like to get this feature going. I would assume the error is in the connection string, but at this point I've tried for a couple hours with no success.
Thank you in advance.
Related
This question already has answers here:
sun.jdbc.odbc.JdbcOdbcDriver not working with jdk 1.8
(2 answers)
java.sql.SQLException: No suitable driver found for jdbc:odbc:Driver={Microsoft Text Driver (*.txt; *.csv)};DBQ=D:\Users\
(4 answers)
Closed 1 year ago.
I am trying to access Excel as a database using the groovy.sql package, which is a GDK extension to JDBC. I am aware that Excel is not a database and that for most tasks Apache POI works better. I am using an Excel file named weather.xlsx as a test document. The workbook contains only one sheet which looks like this:
City
Temperature
Denver
19
Boston
12
New York
22
I am using this code:
import groovy.sql.Sql
class ExcelAsDB {
static void main(args) {
def sql = Sql.newInstance(
"""jdbc:odbc:Driver=
{Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};
DBQ=C:\\path_to_file\\weather.xlsx;READONLY=false""", '', '')
println "City\t\tTemperature"
sql.eachRow('SELECT * FROM [temperatures$]') {
println "${it.city}\t\t${it.temperature}"
}
}
}
When I run the code, I get the following error message:
Exception in thread "main" java.sql.SQLException: No suitable driver found for jdbc:odbc:Driver=
{Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};
DBQ=C:\path_to_file\weather.xlsx;READONLY=false
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:702)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:228)
at groovy.sql.Sql.newInstance(Sql.java:396)
at groovy.sql.Sql$newInstance.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:157)
at Excel.main(Excel.groovy:7)
I've read in similar questions such as java.lang.ClassNotFoundException: sun.jdbc.odbc.JdbcOdbcDriver Exception occurring. Why? and JDBC ODBC Driver Connection that the ODBC bridge was removed from Java with Java 8. However, I was under the impression that if I connect directly to the Excel driver, rather than setup a DSN for the Excel file, I should be able to access the file anyway.
I am using a Windows computer and have confirmed that the Excel Driver is installed. I am using Groovy Version: 3.0.8 JVM: 16 Vendor: Oracle Corporation OS: Windows 10.
I am trying to open and copy xls documents in the Catalog window of ArcMap 10.6.1.
Everytime I try to expand the table I get this error message:
"Failed to connect to database. General function failure.
The external table doesn't have the expected format." (translated from German)
I've tried installing (then updating) "2007 Office System Driver: Data Connectivity Components" and "Microsoft Access Database Engine 2010 Redistributable" but that didn't help.
I'm running ArcGIS 10.6.1 on Windows Server 2012 R2 without an Office installation.
Interestinlgy, on another machine, running ArcGIS 10.5.1 with the same OS and no Office, it works fine!
Try this which can help you read and use data from a .xls using arcpy window:
import arcpy
import xlrd
inputExcel = xlrd.open_workbook("C:\Users\username\In_excel.xls")
sheetNames = inputExcel.sheet_names()
excelSheet = inputExcel.sheet_by_name(sheetNames[0])
for x in range (0, excelSheet.nrows):
for y in range (0 excelSheet.ncols):
cellValue = excelSheet.cell_value(x, y)
print (cellValue)
I'm trying to set up a connection between Python 3.7 and Teradata SQL Assistant. Below is the code I'm using, but I'm getting the following error... "InterfaceError: ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)'). Any idea why I'm getting this error?
import pyodbc
print ('Connecting to Teradata')
tdta_cnxn = pyodbc.connect(DSN='xxx',UID='xxx',PWD='xxx')
tdta_cursor = tdta_cnxn.cursor()
print ('Success!')
You can run into this szenario based on which ODBC drivers you have. Sometimes it can happen, that ODBC is not shure which drive to take.
So you have to point it to this by just adding "Driver=Teradata Database ODBC Driver 16.10" or "Driver={Teradata}" (or what your driver is) to the connection parameters.
As an alternative you can connect via native Python driver teradatasql (https://pypi.org/project/teradatasql/).
I am following a Udemy Course Learn ETL using SSIS. The first simple task is to transfer data from an excel file to a database.
The only change I have made is I am trying to transfer to a PostgreSQL server instead of a Microsoft SQL Server. I therefore had to install SSDT for Visual Studio first, and get the ODBC driver necessary to create a ODBC Destination for the package.
All well so far, but then when I try and run the package I just get:
SSIS package "Visual Studio 2017\Projects\Excel_SQL\Excel_SQL\Package.dtsx" starting.
Information: 0x4004300A at Excel to SQL, SSIS.Pipeline: Validation phase is beginning.
Information: 0x4004300A at Excel to SQL, SSIS.Pipeline: Validation phase is beginning.
Information: 0x40043006 at Excel to SQL, SSIS.Pipeline: Prepare for Execute phase is beginning.
Information: 0x40043007 at Excel to SQL, SSIS.Pipeline: Pre-Execute phase is beginning.
Information: 0x4004300C at Excel to SQL, SSIS.Pipeline: Execute phase is beginning.
SSIS package "Visual Studio 2017\Projects\Excel_SQL\Excel_SQL\Package.dtsx" finished: Canceled.
The program '[14368] DtsDebugHost.exe: DTS' has exited with code 0 (0x0).
No data transfers over. The excel file is very simple, excel 97-2003 as the connection expects, contains 2 columns only, rollnumber and marks, rollnumber has 11 rows of data going 1 to 11, and then some random marks in the marks column.
My database on Postgres is set up with these 2 columns, as numeric types.
I really cannot figure out what is going wrong.
I have seen some similar questions on stack overflow, but that was around the file type not being correct:
SSIS Package Cancels instantly on Debug
I don't think that's my issue.
Can anyone please advise?
Thank you.
I think the situation is not clear, but there are many suggestions that you can follow:
(1) Try to run the package in 32-bit
The issue may be caused if the package is trying to run in 64-bit mode and you don't have installed the relevant references, try to execute the package in 32-bit mode:
Package Properties >> Debugging >> Run64BitRuntime = false
How to execute a 32 bit SSIS package in a 64bit package?
(2) AccessDatabaseEngine is not installed
The issue may be caused if the Office connectivity components for microsoft Excel are missing, check that you have installed them:
Microsoft Access Database Engine 2010 Redistributable
Microsoft Access Database Engine 2016 Redistributable
(3) Make sure you have followed the appropriate steps to create ODBC Destination
You can follow this article in order to create a package that import data to postgres, check that all steps are done correctly:
SSIS WITH POSTGRESQL : CONNECT TO POSTGRESQL WITH SSIS COMPONENTS
(4) Doing some workarounds
In order to specify the error source, try to replace the Postgres destination with a Flat File Destination, if the package is executed successfully then the problem is with the ODBC Destination, also try to replace the excel source with FLat File Source, if the package is executed successfully then the problem is with the Excel Source.
If you are new to SSIS, som articles can help:
Simple SSIS: Importing Data from Flat Text Files
Export Data from SQL Server to Flat File in SSIS Example
Using SSIS to Export Data to Flat Files
(5) Try to Use SQL Import Export Wizard
If you have SQL Server Installed, try to use the Excel Import Export wizard to create and execute the package:
Import and Export Data with the SQL Server Import and Export Wizard
Connect to a PostgreSQL Data Source (SQL Server Import and Export Wizard)
How to export data from SQL Server to a Flat file
So, in this case it was that I just had to move the (Source) excel file out to my E:\ drive. Perhaps the path it was in was too long? Only 3 folders in from E:\ but...it worked.
Can anyone explain why that was the issue? Nothing pointed to that from the error messages.
So I created a ForEach loop and a data flow task to write from Excel to SQL DB. All works fine with the Excel source hard coded. As soon as I change the connection string to use the file path variable as a data source, I get this error:
[Excel Source 1] Error: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "Excel Connection Manager 1" failed with error code 0xC0202009.
I print the file path in a message box before executing the data flow so I know that the variable is working.
Naturally I browsed tons of answers and tutorials, but nothing. Here's what I tried:
Changing the data source on the connection string
Using the ExcelFilePath expression instead of the connection string
Changing the Excel file name in the connection manager properties
Ran the package in 32 bits
Set delayed validation to True in all data flow tasks and connection manager
Deleting and creating a new connection manager
Combinations of the above, lots of trial an error
I'm using Visual Studio 2013.
I'd appreciate your help as I've been plucking my hair all afternoon with this :)
I never got this to work, so I imported the Excel files to the DB using SQL:
SELECT * FROM OPENROWSET('Microsoft.ACE.OLEDB.12.0', 'Excel 12.0;Database=C:\Test\Excel_Data.xlsx;', 'SELECT * FROM [Sheet1$]')
https://www.sqlshack.com/query-excel-data-using-sql-server-linked-servers/