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argumentum

SQLite returning query as JSON

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#include <SQLite.au3>

;-- When SQLite is compiled with the JSON1 extensions it provides builtin tools
;-- for manipulating JSON data stored in the database.
;-- This is a gist showing SQLite return query as a JSON object.
;-- https://www.sqlite.org/json1.html

Example()
Func Example()
    _SQLite_Startup() ; "<your path>\sqlite3.dll", False, 1) ; https://www.autoitscript.com/autoit3/docs/libfunctions/_SQLite_Startup.htm
    _SQLite_Open() ;  ...if you can not run this due to errors, get the latest DLL from https://www.sqlite.org/
    If _SQLite_Exec(-1, "CREATE TABLE users (id INTEGER PRIMARY KEY NOT NULL, full_name TEXT NOT NULL, email TEXT NOT NULL, created DATE NOT NULL );") Then Return 4
    If _SQLite_Exec(-1, 'INSERT INTO users VALUES ' & _
            '(1, "Bob McFett", "bmcfett@hunters.com", "32-01-01"),' & _
            '(2, "Angus O''Vader","angus.o@destroyers.com", "02-03-04"),' & _
            '(3, "Imperator Colin", "c@c.c", "01-01-01");') Then Return 5

;   -- Get query data as a JSON object using the
;   -- json_group_object() [1] and json_object() [2] functions.
    _SQLite_GetTable2d_ArrayToConsole("SELECT" & _
            " json_group_object(" & _
            "   email," & _
            "   json_object('full_name', full_name, 'created', created)" & _
            " ) AS json_result" & _
            " FROM (SELECT * FROM users WHERE created > ""02-01-01"");")
    ; {"bmcfett@hunters.com":{"full_name":"Bob McFett","created":"32-01-01"},"angus.o@destroyers.com":{"full_name":"Angus O'Vader","created":"02-03-04"}}


;   -- Get query data as a JSON object using the
;   -- json_group_array() function to maintain order.
    _SQLite_GetTable2d_ArrayToConsole("SELECT" & _
            " json_group_array(" & _
            "   json_object('full_name', full_name, 'created', created)" & _
            " ) AS my_json_result_OrAnythingReally" & _
            " FROM (SELECT * FROM users ORDER BY created);")
    ; [{"full_name":"Imperator Colin","created":"01-01-01"},{"full_name":"Angus O'Vader","created":"02-03-04"},{"full_name":"Bob McFett","created":"32-01-01"}]

;-- Links
;-- [1] https://www.sqlite.org/json1.html#jgroupobject
;-- [2] https://www.sqlite.org/json1.html#jobj
; example found at https://gist.github.com/akehrer/481a38477dd0518ec0086ac66e38e0e2
EndFunc   ;==>Example

Func _SQLite_GetTable2d_ArrayToConsole($sSQL, $hDB = -1)
    Local $aResult, $iRows, $iColumns
    If _SQLite_GetTable2d($hDB, $sSQL, $aResult, $iRows, $iColumns) Then
        ConsoleWrite("! SQLite Error: " & _SQLite_ErrCode($hDB) & @CRLF & "! " & _SQLite_ErrMsg($hDB) & @CRLF)
    Else
        _SQLite_Display2DResult($aResult)
    EndIf
    ConsoleWrite(@CRLF)
EndFunc   ;==>_SQLite_GetTable2d_ArrayToConsole

Based on this example, you can build your own query. 
The code has all the explanations.
Enjoy :) 

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Thank you for the examples; I battled to wrap my head around JSON group objects and ended up doing it the looong way :sweating:

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Nice, but as I said in another thread, you have to build your own formatting depending on each query, just to put column names in the resulting json.

An ideal solution would be a function like this:

select jsonify(select ...) whatever the inner select is.


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)

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...same here @dmob, but I've got lucky. :P 
 

1 hour ago, jchd said:

An ideal solution would be a function like this: select jsonify(select ...) whatever the inner select is.

yes. And that is what I did  something along the idea is what I did for my testing tho, is not a general purpose func. , just a hack to get it out of my way:

Func JsonIze_Query($s, $sQuery)
    Local $s_json_object_Str = "", $sSQL = "SELECT json_group_array( json_object("
    Local $a_json_object_Str = StringSplit($s, ",")
    For $n = 1 To $a_json_object_Str[0]
        $s_json_object_Str &= ",'" & $a_json_object_Str[$n] & "'," & $a_json_object_Str[$n]
    Next
    $sSQL &= StringTrimLeft($s_json_object_Str, 1) & ")) AS json_result FROM (" & $sQuery & ");"
    ConsoleWrite($sSQL & @CRLF)
    Return $sSQL
EndFunc

 

Edited by argumentum
clarify a bit

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I'm not trying to belittle your good code, not at all. What I find unpractical but inevitable is that you still have to setup both $s and $sQuery in paired terms for every distinct query. Either this way, or merge both when typing the query as in the other thread.

Deriving $s from the analysis of $sQuery automagically is way beyond doable for the general case (SQL grammar isn't simple!).

Passing the result array to an extension function in plain C in order to do the json formatting quickly is hard due to AutoIt using Variant type.


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)

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..basically this is just "SELECT json_group_array( json_object(" & "'name', name, 'etc', etc" & ")) AS json_result FROM (" & $sSQL & ");"
Coding a table_names_generator() can get cumbersome and mainly, slow, just to get the "'name', name, 'etc', etc" part. And that string will be used for every call to the same query.
I love automagical functions but given the time cost of AutoIt executions, in the aim of speed, coding such would defeat the purpose of a speedy script.
The loop I made to take an array and generate a json string was practical but slow, so one has to choose: hard code or magical function. What is faster.

Finding a query that makes the resultant faster, that in itself I'd call "magical query" ( as I did not come up with it solely on my own ), so, I saved around 200 ms. ( in my query ) by having SQLite formatting the return value.

And I feel I know you better than believing that you would aim to belittle anyone. Moreover, you strive to enlighten everyone in every posting, so, thanks for taking the time to evaluate possibilities.

Now, if an "ASM god" comes up with a _SQLite_GetTable2d_array_to_json(), now that would be vary much welcomed :) 

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      Here and some helpful links to get you more familiar with jq, what can be done with it, its built-in functions, and its syntax.
      jq Website: https://stedolan.github.io/jq/ jq Manual: https://stedolan.github.io/jq/manual/ jqWiki (FAQ, Cookbook, Advanced Topics) https://github.com/stedolan/jq/wiki jq Online Testing Playground: https://jqplay.org/ jq is a single 32 or 64 bit executable that has no other dependencies.  Just like using the SQLite UDF, the only requirement to use this UDF is that the jq executable reside in a location in which the UDF can execute it.  The latest win32 & win64 versions have been included in the UDF download.  You can always get newer versions from the jq website.
      I don't consider this UDF as a replacement for some of the other JSON UDFs like the one based on JSMN.  If speed and simple JSON parsing are your primary goals, then other UDFs may be a better choice.  However, if you like having the power to do just about anything related to JSON processing/manipulation, using a single UDF, then jq may be worth checking out.  It can be used by novices and experts alike.  Below, is a brief explanation of how jq works, how to use the jq UDF, and a few examples of how to do some simple tasks.  If you want to learn more about jq and what it can do, I would highly suggest checking out the jq website and some of the other resources listed above.
      jq at a high level
      Like 'sed', jq reads JSON in, either through STDIN or one or more files, processes it thru one or more "filters", and outputs the results.  You can, optionally, supply "options" that affect how it reads the input, where it gets its "filters", and how it writes its output.  It looks a little like this:
      JSON ---> jq processor (using supplied filters and options) ---> Output
      So in jq lingo, you basically use "Filters" to tell jq what you want it to do.  So in the UDF file, that is why the main functions ( _jqExec() and _jqExecFile() ) refer to filters and options.  Please make note that jq works with relatively strict JSON.  This means that all JSON read must be conform to the standard.  Luckily, jq is pretty good at identifying where a format error exists in non standard JSON.
      The jq UDF
      There are 2 main funtions in the UDF file, _jqExec and jqExecFile.  With these 2 functions, you can pretty much do anything that jq can do.  The only difference between to two functions is whether the JSON is supplied by a string or a file.  The 2 primary functions simply call the jq executable with the supplied information, after properly formatting the parameters.  There are additional functions in the UDF to easily pretty-print your json, compact-print your json, dump the json data with its associated paths, and see if specific JSON keys exist, but they all just execute the _jqExec or _jqExecFile function with the proper filter.  There are also a couple of extra functions to display what version of the UDF and jq executable you are currently using.  There are also a couple of functions to enable and disable logging of jq information for debugging purposes.  Most of the jq UDF file functions return an @error if unsuccessful.  Some also include @extended info.  Please see the actual function headers for more information on their usage and return values.
      The 2 primary functions below just format your jq request and pass it on the jq executable.  The functions will also properly escape double quotes (") that are used in the filter.  For most simple tasks, you just need to supply the JSON source and a filter.
      _jqExec($sJson, $sFilter, $sOptions = Default, $sWorkingDir = Default) Or _jqExecFile($sJsonFile, $sFilter, $sOptions = Default, $sWorkingDir = Default) Using jq in your script
      As stated earlier, the jq executable must reside somewhere where the script can locate and execute it.  The _jqInit() function always has to be executed before any jq processing occurs.  _jqInit() merely locates the executable or uses the supplied path.  It also clears any previous debug log.  The jq UDF folder contains a jq example script that has several examples to how to do some of the most common JSON processing tasks.  Here are a few examples to get you started:

      How to pretty-print some JSON
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"fruits":[{"Apple":{"color":"Red","season":"Fall"}}, {"Banana":{"color":"Yellow","season":"Summer"}}]}' $sCmdOutput = _jqPrettyPrintJson($sJson) ConsoleWrite(@CRLF & "Pretty-Print JSON" & @CRLF & $sCmdOutput & @CRLF) How to compact-print some JSON
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{ "fruits" : [{"Apple" : {"color":"Red","season":"Fall"}}, {"Banana":{"color":"Yellow","season":"Summer"}}]}' $sCmdOutput = _jqCompactPrintJson($sJson) ConsoleWrite(@CRLF & "Compact-Print JSON" & @CRLF & $sCmdOutput & @CRLF) Dump JSON data (paths and values)
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{ "fruits" : [{"Apple" : {"color":"Red","season":"Fall"}}, {"Banana":{"color":"Yellow","season":"Summer"}}]}' $sCmdOutput = _jqDump($sJson) ConsoleWrite(@CRLF & "Dump JSON paths and values" & @CRLF & $sCmdOutput & @CRLF) How to GET JSON values
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"Apple" : {"color":"Red","season":"Fall"}, "Banana":{"color":"Yellow","season":"Summer"}}' $sFilter = '.Banana.color' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("Get color of banana" & @CRLF) ConsoleWrite("Input: : " & _jqCompactPrintJson($sJson) & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & $sCmdOutput & @CRLF) or
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"Apple" : {"color":"Red","season":"Fall"}, "Banana":{"color":"Yellow","season":"Summer"}}' $sFilter = 'getpath(["Banana", "color"])' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("Get color of banana" & @CRLF) ConsoleWrite("Input: : " & _jqCompactPrintJson($sJson) & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & $sCmdOutput & @CRLF)  
      Check for the existence of a key
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"Apple":{"color":"Red","season":"Fall"}, "Banana":{"color":"Yellow","season":"Summer"}}' $sFilter = '.Banana | has("color")' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("Check for existence of color key within Banana object" & @CRLF) ConsoleWrite("Input: : " & _jqCompactPrintJson($sJson) & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & $sCmdOutput & @CRLF) Count of how many Items in an object
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"Apple":{"color":"Red"}, "Banana":{"color":"Yellow","season":"Summer"}}' $sFilter = '.Banana | length' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("How many items in the Banana object" & @CRLF) ConsoleWrite("Input: : " & _jqCompactPrintJson($sJson) & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & $sCmdOutput & @CRLF) How to PUT/Create/Modify JSON
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sInput = "" $sFilter = 'setpath(["Apple","color"];"Red") | setpath(["Banana","color"];"Yellow") | setpath(["Banana","season"];"Summer")' $sOptions = '-n' ;required if no input supplied $sCmdOutput = _jqExec($sInput, $sFilter, $sOptions) ConsoleWrite("Update/Create JSON" & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & @CRLF & $sCmdOutput & @CRLF) List all of the fruits (top-level keys)
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '{"Apple":{"color":"Red"}, "Banana":{"color":"Yellow","season":"Summer"}}' $sFilter = 'keys | .[]' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("List all top-level keys (fruits)" & @CRLF) ConsoleWrite("Input : " & $sJson & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & @CRLF & $sCmdOutput & @CRLF) Calculate the sum of all of the objects' price * qty
      #include "jq.au3" _jqInit() If @error Then Exit ConsoleWrite("ERROR: Unable to initialize jq - @error = " & @error & @CRLF) $sJson = '[{"id":1,"price":20.00,"qty":10},{"id":2,"price":15.00,"qty":20.25},{"id":3,"price":10.50,"qty":30}]' $sFilter = 'map(.price * .qty) | add' $sCmdOutput = _jqExec($sJson, $sFilter) ConsoleWrite("Calculate the sum of all of the objects' price * qty" & @CRLF) ConsoleWrite("Input : " & $sJson & @CRLF) ConsoleWrite("Filter : " & $sFilter & @CRLF) ConsoleWrite("Output : " & $sCmdOutput & @CRLF)
      The examples above, and the ones in the example files, merely scratch the surface of what jq can do.  It may look intimidating at first but it really isn't that bad once you start playing with it.
      If you have any questions regarding the UDF, or how to perform a certain task using jq, I'll try my best to answer them.  Since jq has been around for a while now, there's also several jq-related questions and answers on StackOverflow.
      If you work with JSON, I hope you find this UDF useful as I do.
    • By benners
      I am trying to normalise a database to remove duplicate info. I am using SQLite Expert to design the database and test sql queries.
      The database is going to store information about setup installers, such as paths, installer specific info, users to install for, type and category of installer blah, blah.
      I have attached the database thus far and the tables function are as follows:-
      category - stores text describing the general usage the installer comes under, such as Browser, Compression etc. installer - this is the main table that has relationships with the other tables and stores info about the installer file, install order etc. installer_user - a link table. Stores the user or computer to install the program for or on. package - stores the type of installer, NSIS, Inno  Nullsoft etc. platform - the OS architecture the installer file is compiled for. postinstall - a list of activities to perform when the main install has finished. postinstall_user - a link table. Stores the users\computers that are allowed to run the post install actions user - a list of computers or usernames. I might separate into two tables, undecided yet. Now there wil be one program that deals with the installation side and another that acts as a front end for editing the database suchs as adding new files, removing old files etc.
      The idea with the editing side is to be able to delete an installer from the installer table say with the id of 1 and all other pertinent information in the other tables will also be deleted. The same goes for deleting a user. All the fields relating to that user will be removed.
      I have managed to get that part working for the most part. If I delete either a user or installer, the related info in the installer_user and postinstall tables are removed but since I added the postinstall_user table to link usernames to the postinstall action, this is where I get the foreign key error. If someone can explain why, I am sure it is an obvious reason for someone who knows what they are doing 😄
      Cheers
      Installer - Copy.db
    • By Nas
      Hi everyone,
      I am trying to make a script that runs a query and show it to me to see if everything is right and then decide if I finish it or not so I made a little script as below :
      #include <ADO.au3> #include <Array.au3> #include <MsgBoxConstants.au3> #include <AutoItConstants.au3> _ADO_EVENTS_SetUp(True) _ADO_ComErrorHandler_UserFunction(_ADO_COMErrorHandler) Local $sDriver = 'SQL Server' Local $sDatabase = 'DataBase' ; change this string to YourDatabaseName Local $sServer = 'Localhost' ; change this string to YourServerLocation Local $sConnectionString = 'DRIVER={' & $sDriver & '};SERVER=' & $sServer & ';DATABASE=' & $sDatabase & ';UID=' & ';PWD=' & ';' ;~ Global $Query = _ ;~ "BEGIN TRAN" & @CRLF & _ ;~ "UPDATE Table" & @CRLF & _ ;~ "SET HOUR = 4" & @CRLF & _ ;~ "WHERE CUST = 'TEST'" & @CRLF & _ ;~ "SELECT * FROM Table" & @CRLF & _ ;~ "WHERE CUST = 'TEST'" & @CRLF & _ ;~ "ROLLBACK TRAN" Global $Query = _ "BEGIN TRAN" & @CRLF & _ "SELECT * FROM Table" & @CRLF & _ "WHERE CUST = 'TEST'" & @CRLF & _ "ROLLBACK TRAN" _Query_Display($sConnectionString, $Query) Func _Query_Display($sConnectionString, $sQUERY) ; Create connection object Local $oConnection = _ADO_Connection_Create() ; Open connection with $sConnectionString _ADO_Connection_OpenConString($oConnection, $sConnectionString) If @error Then Return SetError(@error, @extended, $ADO_RET_FAILURE) ; Executing some query directly to Array of Arrays (instead to $oRecordset) Local $aRecordset = _ADO_Execute($oConnection, $sQUERY, True) ; Clean Up _ADO_Connection_Close($oConnection) $oConnection = Null ; Display Array Content with column names as headers _ADO_Recordset_Display($aRecordset, 'Query Result') EndFunc ;==> _Query_Display When I ran this script it works great, but when I run the query below :
      Global $Query = _ "BEGIN TRAN" & @CRLF & _ "UPDATE Table" & @CRLF & _ "SET HOUR = 4" & @CRLF & _ "WHERE CUST = 'TEST'" & @CRLF & _ "SELECT * FROM Table" & @CRLF & _ "WHERE CUST = 'TEST'" & @CRLF & _ "ROLLBACK TRAN" It doesn't show anything, when I take those begin and rollback it does what it should but still not showing me anything at all, is there a way around it that you know of?
      Thank you.
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