SnArF

SQL/Acces select query error

5 posts in this topic

Hello,

I,m connecting to a access mdb, it works fine except when i use a select query and the requested data does not exists, then i get an error.

; Example

Local $dbName = @ScriptDir & "\test.mdb"

$dbCon = ObjCreate("ADODB.Connection") ; Create DataBase connection
$dbCon.Open("Driver={Microsoft Access Driver (*.mdb)}; DBQ=" & $dbName)

$sQuery = "select * from sourcefiles where Text='test'"
$result = $dbCon.Execute($sQuery)

MsgBox(0, "", $result.Fields( "ID" ).Value)

If "test" exists in column Text then i get the ID number from column ID

But if it doesn't exist i get an error:

MsgBox(0, "", $result.Fields( "ID" ).Value)
MsgBox(0, "", $result.Fields( "ID" )^ ERROR

If the value "test"does not exist i just want $result to be 0 or ""

Someone an idea?


My scripts: _ConsoleWriteLog | _FileArray2D

 

 

 

Share this post


Link to post
Share on other sites



This should do:

Local $dbName = @ScriptDir & "\test.mdb"

$dbCon = ObjCreate("ADODB.Connection") ; Create DataBase connection
$dbCon.Open("Driver={Microsoft Access Driver (*.mdb)}; DBQ=" & $dbName)

$sQuery = "select * from sourcefiles where Text='test'"
$result = $dbCon.Execute($sQuery)

If Not $result.EOF Then
    MsgBox(0, "", $result.Fields( "ID" ).Value)
    ; ...
EndIf

I'm not familiar with Access, but typical SQL engine would allow that as well:

$sQuery = "select coalesce(ID, 0) from sourcefiles where Text='test'"
$result = $dbCon.Execute($sQuery)

MsgBox(0, "", $result.Fields(0).Value)

 


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

Share this post


Link to post
Share on other sites

Someone an idea?

btw.

You should use Com Error Handler with this :
 

ObjEvent()

Look in examples from HelpFile


Signature beginning:   Wondering who uses AutoIT and what it can be used for ?
* GHAPI UDF - modest begining - comunication with GitHub REST API *
ADO.au3 UDF     POP3.au3 UDF     XML.au3 UDF    How to use IE.au3  UDF with  AutoIt v3.3.14.x  for other useful stuff click the following button

Spoiler

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

Signature last update: 2017-06-04

Share this post


Link to post
Share on other sites

Yes but in this case this is not an actual error: it's indeed to be expected that some SELECT returns an empty set. So testing for the resultset being empty seems appropriate here.

Of course it's always a good idea to have a genuine COM error handler setup.


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

Share this post


Link to post
Share on other sites

Yes but in this case this is not an actual error: it's indeed to be expected that some SELECT returns an empty set. So testing for the resultset being empty seems appropriate here.

Of course it's always a good idea to have a genuine COM error handler setup.

For this I use "btw."

Sorry for so short help/support but actually I get 100 mail / day  and 50 phone call / day.
I hope my hell will end in next 4 weeks :)

 


Signature beginning:   Wondering who uses AutoIT and what it can be used for ?
* GHAPI UDF - modest begining - comunication with GitHub REST API *
ADO.au3 UDF     POP3.au3 UDF     XML.au3 UDF    How to use IE.au3  UDF with  AutoIt v3.3.14.x  for other useful stuff click the following button

Spoiler

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

Signature last update: 2017-06-04

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Similar Content

    • sc4ry
      By sc4ry
      Dear all,
      I already have a formula which will select doublicates, but sometimes there might be entries with additional information starting after "-", which I now want to trim away.
      Current formula is:
      Select DISTINCT a.title, a.oid, a.size, a.disk from DB a, DB b where (a.title like b.title and a.oid <> b.oid)" & $ActiveDisks_Filter & " AND (a.comment <> 'Delete' AND b.comment <> 'Delete') Order by a.title ASC, a.size DESC; testwise I want to add a simple solution like left, but afterwards I get an error but I do not know why.
      Select DISTINCT a.title, a.oid, a.size, a.disk from DB a, DB b where (left(a.title,15) like b.title and a.oid <> b.oid) Order by a.title ASC, a.size DESC; Error: near "(": syntax error: Finally I would like to insert intstr to search for "-" but currently I am not able to extend my current code =/
      Thanks a lot for your help.
      EDIT: hey, I managed it, left was not working also it was somehow shown that the tool knowed the comment. I did it now with substr+instr
      (substr(a.title, 1, instr(a.title, ' - '))  
    • AndyS19
      By AndyS19
      I have code that does a WMI SQL query to find all defined printers, and I want to parse the returned object in several places.  However, after parsing it the first time, all other times fail to find any printer objects.
      Here is my test code:
      test() Func test() Local $oPrinters, $oPrinter, $err, $cnt, $oP, $query $query = "SELECT * FROM Win32_Printer" $oPrinters = doQuery($query) $err = @error LogMsg("+++: $err = " & $err & ", isObj($oPrinters) = " & IsObj($oPrinters)) If ($err == 0) Then LogMsg("FIRST LOOP") ; <=== FIRST LOOP $cnt = 0 $oP = $oPrinters LogMsg("+++: isObj($oP) = " & IsObj($oP)) For $oPrinter In $oP $cnt += 1 LogMsg("+++: isObj($oPrinter): " & IsObj($oPrinter) & ", $oPrinter.Name ==>" & $oPrinter.Name & "<==") Next LogMsg("+++: Found " & $cnt & " printers") LogMsg("SECOND LOOP") ; <== SECOND LOOP $cnt = 0 $oP = $oPrinters LogMsg("+++: isObj($oP) = " & IsObj($oP)) For $oPrinter In $oP $cnt += 1 LogMsg("+++: isObj($oPrinter): " & IsObj($oPrinter) & ", $oPrinter.Name ==>" & $oPrinter.Name & "<==") Next LogMsg("+++: Found " & $cnt & " printers") EndIf EndFunc ;==>test Func doQuery($sQuery, $lnum = @ScriptLineNumber) #forceref $lnum LogMsg("+++:" & $lnum & ": doQuery(" & '"' & $sQuery & '"' & ") entered") Local $oWMIService, $oResults, $errstr Local $wbemFlags = BitOR(0x20, 0x10) ; $wbemFlagReturnImmediately and wbemFlagForwardOnly $oWMIService = ObjGet("winmgmts:\\" & "localhost" & "\root\CIMV2") If (IsObj($oWMIService)) Then $oResults = $oWMIService.ExecQuery($sQuery, "WQL", $wbemFlags) If (IsObj($oResults)) Then LogMsg("+++: doQuery() returns @error = 0, Good: returning the object") Return (SetError(0, 0, $oResults)) ;;; Good: return the object Else $errstr = "" _ & "WMI Query failed." & @CRLF _ & "This is the query:" & @CRLF _ & " " & $sQuery LogMsg("+++: ====>" & $errstr & "<===") LogMsg("+++: doQuery() returns @error = 1") Return (SetError(1, 0, $errstr)) ; Error: Query faled EndIf Else $errstr = "" _ & "WMI Output" & @CRLF _ & "No WMI Objects Found for class: " & @CRLF _ & "Win32_PrinterDriver" & @CRLF _ & "using this query:" & @CRLF _ & " " & $sQuery LogMsg("+++: ====>" & $errstr & "<===") MsgBox(0, "ERROR", $errstr) ; Error: Cannot get $oWMIService object Exit (1) EndIf EndFunc ;==>doQuery Func LogMsg($msg, $lnum = @ScriptLineNumber) ConsoleWrite("+++:" & $lnum & ": " & $msg & @CRLF) EndFunc ;==>LogMsg Parsing the returned $oPrinters object shows 5 printers:
      +++:15: FIRST LOOP +++:18: +++: isObj($oP) = 1 +++:22: +++: isObj($oPrinter): 1, $oPrinter.Name ==>Microsoft XPS Document Writer<== +++:22: +++: isObj($oPrinter): 1, $oPrinter.Name ==>Microsoft Office Document Image Writer<== +++:22: +++: isObj($oPrinter): 1, $oPrinter.Name ==>Fax<== +++:22: +++: isObj($oPrinter): 1, $oPrinter.Name ==>Canon MG7100 series Printer WS<== +++:22: +++: isObj($oPrinter): 1, $oPrinter.Name ==>Canon MG6100 series Printer WS<== +++:24: +++: Found 5 printers Parsing it again, shows no printers:
      +++:26: SECOND LOOP +++:29: +++: isObj($oP) = 1 +++:35: +++: Found 0 printers  
    • GhostLine
      By GhostLine
      Hello guys !
      I'm stuck in something stupid (I guess), but since I've no clue on how to solve it, here I come
      I'm trying to collect the result of the query "select @@hostname" on MSSQL Server, but it doesn't work ... and I'm sure I'm connected to the database (I've successfully seen the database treeview). 

      #Region ;**** Directives created by AutoIt3Wrapper_GUI **** #AutoIt3Wrapper_UseX64=n #EndRegion ;**** Directives created by AutoIt3Wrapper_GUI **** #include<_sql.au3> #include<array.au3> Local $aData,$iRows,$iColumns ;Server ID and credentials for tCards Global $ServerAddressT = "10.200.88.1" Global $ServerUserNameT = "user" Global $ServerPasswordT = "password" Global $DatabaseNameT = "DataBASE" ;Connect to DB _SQL_RegisterErrorHandler();register the error handler to prevent hard crash on COM error $OADODB = _SQL_Startup() If $OADODB = $SQL_ERROR Then MsgBox(0 + 16 + 262144, "Error", _SQL_GetErrMsg()) If _sql_Connect(-1, $ServerAddressT, $DatabaseNameT, $ServerUserNameT, $ServerPasswordT) = $SQL_ERROR Then     MsgBox(0 + 16 + 262144, "Error 1", _SQL_GetErrMsg())     _SQL_Close()     Exit Else     If _SQL_Execute(-1,"select @@SERVERNAME") = $SQL_ERROR then         Msgbox(0 + 16 +262144,"Error",_SQL_GetErrMsg())     Else         _ArrayDisplay(_SQL_GetTable(-1,"select @@SERVERNAME",$aData,$iRows,$iColumns)) ;~         $toto = _SQL_Execute(-1,"select @@SERVERNAME") ;~         _ArrayDisplay($toto)     EndIf EndIf
    • Gorby7
      By Gorby7
      I have an Autoit-based client GUI that uses a single MS SQL Server database. I have no problem connecting to and executing queries against this database from my AutoIT code, with the below exception:
      One of the database's stored procedures I need to execute requires a parameter that is a table. I've set up the appropriate table_type on the database and everything works fine on the database itself when I execute the stored proc with a table variable for the parameter (no AutoIT involved). The problem is that I can't figure out how to pass a table parameter from AutoIT, assuming it's even possible. The code below shows the two methods I've tried, both methods return a RecordSet object that is at EOF.
      #include <Array.au3> Opt("MustDeclareVars", 0) $sDBSrv = "ITSQL01.domain.com" $sDBName = "INVDEV" $sADOName = "ADODB.Connection" $oSQLConn = ObjCreate($sADOName) $sConnStr = "Driver={SQL Server};Server=" & $sDBSrv & ";Database=" & $sDBName & ";Trusted_Connection=yes;" $oSQLConn.Open ($sConnStr) $rsoFacFriendly = $oSQLConn.Execute("SELECT TOP 5 FriendlyName FROM Facility") If Not $rsoFacFriendly.EOF Then $aFacFriendly = $rsoFacFriendly.GetRows() _ArrayDisplay($aFacFriendly) $rsoSPResults = $oSQLConn.Execute("EXEC spTableParameterPassTest " & $aFacFriendly) Select Case $rsoSPResults.EOF = False MsgBox(0, "sp exec1", "not end of file") $aSPResults = $rsoSPResults.GetRows() _ArrayDisplay($aSPResults) Case IsObj($rsoSPResults) = 0 MsgBox(0, "sp exec1", "rso isn't even an object") Case $rsoSPResults.EOF = True MsgBox(0, "sp exec1", "At end of file") Case Else MsgBox(0, "sp exec1", "Something else happened") EndSelect $rsoSPResults = 0 $rsoSPResults = $oSQLConn.Execute("EXEC spTableParameterPassTest " & $rsoFacFriendly) Select Case $rsoSPResults.EOF = False MsgBox(0, "sp exec2", "not end of file") $aSPResults = $rsoSPResults.GetRows() _ArrayDisplay($aSPResults) Case IsObj($rsoSPResults) = 0 MsgBox(0, "sp exec2", "rso isn't even an object") Case $rsoSPResults.EOF = True MsgBox(0, "sp exec2", "At end of file") Case Else MsgBox(0, "sp exec2", "Something else happened") EndSelect $rsoSPResults = 0 $rsoFacFriendly = 0 $oSQLConn.Close $oSQLConn = 0 Exit  
    • rynow
      By rynow
      romaSQL
      This autoIt UDF is built on the concept of Laravel Query & doctrine.
      RomaSQL provides a new, comfortable and easy to use way for SQL-queries in autoIt.
      Most of the common SQL-queries are supported already and more are coming soon.
      All of your support is much appreciated.
      Connections
      For the connection the object ADODB is used. Therefore the connection string is based on ODBC.
      You can also use OLEDB connection strings or other database connections.
      In order for this to work your add-ons have to be installed in the function: __4ern_SQL_Connection.
      I’d be very glad if you shared your modifications with me.
      Currently supported connections
      -       MySQL (odbc)
      -       Microsoft SQL Server (odbc)
      -       SQLite (odbc)
      -       Microsoft Access (odbc)
      Command reference
      $SQL_connect; establishing connection $SQL_returnType; return a Array or Dictionary ('oDict') Object (Default = Array) $SQL_setDefaultTable; Default Tablename $SQL_setDefaultKey; Default Colmn Key (Default = id) $SQL_debug; if True, show SQL Statment in Console $SQL_get $SQL_update $SQL_delete $SQL_insertInto $SQL_take $SQL_limit $SQL_table $SQL_select $SQL_distinct $SQL_where $SQL_orWhere $SQL_whereBetween $SQL_whereNotBetween $SQL_whereIn $SQL_whereNotIn $SQL_whereNull $SQL_whereNotNull $SQL_having $SQL_orHaving $SQL_havingBetween $SQL_havingNotBetween $SQL_havingIn $SQL_havingNotIn $SQL_havingNull $SQL_havingNotNull $SQL_groupBy $SQL_orderBy  
      Examples
      establishing connection
      ;-----/ ; SQLite Connection ;-----/ $SQL_setDatabase('sqlite') $SQL_connect('C:\project.db') ;-----/ ; Access Connection ; Database, User, Password ;-----/ $SQL_setDatabase('access') $SQL_connect('C:\project.mdb') ;or as Admin $SQL_connect('C:\project.mdb', '4ern', 'root') ;-----/ ; SQLServer Connection ; Database, User, Password, Server, Driver ;-----/ $SQL_setDatabase('sqlserver') $SQL_connect('myDB', '4ern', 'root', 'localhost') ;or with Driver $SQL_connect('myDB', '4ern', 'root', 'localhost', 'SQL Server') ;-----/ ; MySQL Connection ; Database, User, Password, Server, Driver ;-----/ $SQL_setDatabase('mysql') $SQL_connect('myDB', '4ern', 'root', 'localhost') ;or with Driver $SQL_connect('myDB', '4ern', 'root', 'localhost', 'MySQL ODBC 5.2 UNICODE Driver')  
      simple SQL query
      $SQL_table('albums') $aRet = $SQL_get() if IsArray($aRet ) then _ArrayDisplay($aRet ) else ConsoleWrite('Keine Ergebnisse' & @LF) endif  
      Select
      $SQL_table('albums') $SQL_select('id', 'Name', 'Artist', 'Song') ;or pass to an Array Local $aSelect = ['id', 'Name', 'Artist', 'Song'] $SQL_select($aSelect) $aRet = $SQL_get() if IsArray($aRet ) then _ArrayDisplay($aRet ) else ConsoleWrite('Keine Ergebnisse' & @LF) endif where
      $SQL_table('albums') $SQL_select('id', 'Name', 'Artist', 'Song', 'Votes') $SQL_where('Artist', 'adele') $SQL_where('Votes', '>=' ,'9') $SQL_orWhere('Artist', '=' ,'Rag'n'Bone Man') ;or pass to an 2dArray Local $aSelect = [['Artist','adele'],['Votes', '>=' ,'9']] $SQL_where($aSelect) $aRet = $SQL_get() if IsArray($aRet ) then _ArrayDisplay($aRet ) else ConsoleWrite('Keine Ergebnisse' & @LF) endif  
      If you need more examples, then tell me exactly what you need.
      I hope you like my UDF and find some use for it.
      ---
      ->DONWLOAD romaSQL