Reported 2 days ago:
67133 - Severe data corruption tied to values processing wrongly under some locales
feedback://showreport?report_id=67133
basically you need to get EVERY person who uses locales affected by this to put this as their TOP priority and also subscribe to the case to get it fixed
0 points = no priority
only ā1 reporterā = no priority (see Web 2.0 date picker on WebDialog problem - #5 by Jay_Menna - Web - Xojo Programming Forum)
FYI use the HTTP links in here
http://feedback.xojo.com/case/67133
Click āsubscribeā on an open case to add your āme tooā to any case
This is a severe case, possible data loss pointed out. It should not be a case of āsubscribersā begging, but for the triage team set an urgent priority. If they donāt want to work as anyone should be, with the QA team setting some cases as severe, and urgent, the bad luck is all on them. The risk of going out of business due to millionaire damages inflicted on others, due to known neglected issues, too. I made the best for them. Geoff is aware. I called him out when weāve found that Xojo bug. Robin is more than aware, and Iām pretty sure more Xojo engineers that were around in the forum too. Options and prioritiesā¦
I looked at the caseā¦
What does this currency issue in SQLLite have to do with testing Delphi?
(This should be a split topic?)
The issue is primarily one of (Xojo?) not being specific in the text-to-number conversion that is used when you provide a hard coded value in a string.
(eg it probably should be be using Val and expecting YOU to provide 5.2,
or should it be using Cdbl and interpreting what you throw at it, because a command like this is usually generated as the result of something someone typed in, despite the SQL Injection risk.
In which case if someone uses your USA formatted value of 5.2 on a Spanish system, they get the wrong value)
The command used was
db.ExecuteSQL(CreateIt + āINSERT INTO test (āākk6000"ā) VALUES (5.2);")
So, knowing that YOU want to store a real number of 5.2 in the db, and knowing that the app is running on a Spanish setup, wouldnāt it make sense to either
store the localised value of 5,2 here,
or use a parameterised query?
This is a severe case, possible data loss pointed out. It should not be a case of āsubscribersā begging, but for the triage team set an urgent priority.
I seem to recall that SQLLite stores everything as a string.
That being the case, if a db is shared between a US and EU company, one of them is going to see incorrect values for 5.2
Is this ALSO a SQLLite āissueā ?
So many wrong assumptions and fallacies, but Iāll need to expose A BIT of light over itā¦
Well, this XOJO issue, not SQLite, is focused on the topic, not Delphi, and it is just to remember people that Xojo is, kind of, Silver, not Gold.
Please, stop saying nonsense without examining the case that was recognized as a āBUG IN THE FRAMEWORKā by Robin.
Do you have some notion on how this all you wrote is nonsense?
More nonsense.
Please, next time, check the case with care.
Letās just say that if we retrieve that SQLLite floating point value (not string) this way, c1 comes as 5.2 correctly:
Var c1 As Currency = rs.Column("kk6000").CurrencyValue
But, if we try using the iterators like
For Each row as DatabaseRow in rs
Var d1 As Double = row.Column(ākk6000ā).DoubleValue // 5.2
Var c1 As Currency = row.Column(ākk6000ā).CurrencyValue // -0.5808
The framework destroys the value. Itās not a SQLite problem, it was arisen when DatabaseRow was involved.
I will politely disagree.
Wouldnāt you expect a coder in Spain to formulate the same statement as
db.ExecuteSQL(CreateIt + āINSERT INTO test (āākk6000"ā) VALUES (5,2);")
?
You can store any type of data in any field in SQLLite.
To me, that sounds like text storage and variants. They call it type affinity.
If you want to say that is wrong or misrepresentative, I donāt mind.
Youāre the expert.
I see you have amended the reply to remove a comment about me being aggressive.
I wasnāt intending to be so (I donāt have any issue with you, just comments on the situation) , but my goodness, have you read your bug report?
I could hear you shouting as I read it.
I wrote DB engines, I wrote an Operating System for an Industrial Computer.
Thats good.
But out of curiosity, did you try a parameterised query?
Did you try using 5,2 ?
I wonāt bother responding any more here.
I understand your frustration, but I can live without being part of it.
No. Nobody does it unless they are some student learning and committing some massive error.
Do you realize, that that code I attached to the case is not a real code, but just a sample tailored to show the bug? Including the value, correctly put in the string, that is part of the āas you can seeā.
More than read, I wrote it. Whatās wrong with it?
Hardly you will see me shouting.
Yes, I redacted what I was writing because I always read, and reread, what the other says, and what Iām writing, trying to find the best tone avoiding misunderstandings.
Iāve read your comment in a bad tone, unnecessarily lost the patience, but later I shrunk the arguments to the minimum after.
And thatās completely correct. If I owned Xojo, R2021R3.2 would be out next day just due to it.
I must advise readers that those huge exaggerations and zoom are from Jeff, not me. The text is ok and in place in the case.
shouldnt be but it is frequently noted āthere are not many reportersā
Itās a Framework bug, related to DB. And silent one. Probably not a SQLite one, probably affects more DBs. Needs deeper analysis. There are more ignored reports. I do remember something related to PostgreSQL, but when people say āThe workaround isā¦ā itās neglected there.
As I said. Any math error, or I/O bug, or DB bug, potentially causing data corruption, is a severe bug signaling a āletās stop everything and fix thisā without any additional cry.
Seems related, PostgreSQL:
61761 - abnormalities between rowset and datarow with currency type from @MarkusWinter
Why dont you TRY and VERIFY the problem instead of just writing the nonsense that you think it sounds like.
SQLite is storing the real as a DOUBLE (not as the other nonsense you think of storing all on plain text). Why are you so confused talking about the inserts?
So you are not even understanding what the problem is but blindy justifying the bug
Just read it carefully, it is not so difficult, Xojo retrieves that DOUBLE and INTERNALLY uses a intermediate string to convert that DOUBLE to a Currency. It has NOTHING to do with user input nor hard coded values in the code. Xojo could skip the string conversion but they decide to use it and screw up not making it regional aware.
Calm down!!! you look like a newcomer to Xojo.
Last year I reported a bug where a silent change in the framework corrupted all the files saved. Same āmillionaire damages inflicted on others, due to known neglected issuesāā¦ No answer from them, just a little note in the documentation to clarify the NEW behavior but not even noting there was a change, an attitude of it is not a bug, you are using it wrong look at the documentation.
So expect MAYBE a silent fixā¦ But just look at case 61761, more than a year and still there.
Sigh.
Why dont you?
Xojo retrieves that DOUBLE and INTERNALLY uses a intermediate string to convert that DOUBLE to a Currency.
I believe that is what I suggested may be happening.
The issue is primarily one of (Xojo?) not being specific in the text-to-number conversion that is used when you provide a hard coded value in a string.
Iāve had enough of this forum.
What Xojo did, no one except Xojo knows, but for sure, what they did is wrong and gets affected by the locale and should not.
I did when they made the original post on the other forum. Test to create the Database both in english locale and spain locale, both store the 5.2 as a double. The problem is NOT storing, is retrieving.
Of course NOT (At least if they know SQL) Are you aware that your code is NOT a valid SQL??? you CANāT use a comma like that.
But sure its the forum
One question
If instead of a hard coded insert of 5.2 you create a variable, say a double, and insert using a prepared statement then retrieve it, does the same issue ensue ?
something like
Var lDouble As Double = 5.2
Var db As New SQLiteDatabase
db.DatabaseFile = SpecialFolder.Desktop.Child("test-delete-it.sqlite")
db.CreateDatabase
Const createIt As String = "DROP TABLE IF EXISTS test; CREATE TABLE test (""kk6000"" real); "
db.ExecuteSQL(CreateIt)
db.ExecuteSQL("INSERT INTO test (""kk6000"") VALUES (?);", lDouble)
Var rs As RowSet = db.SelectSQL("SELECT * FROM test")
For Each row As DatabaseRow In rs
Var d1 As Double = row.Column("kk6000").DoubleValue
Var c1 As Currency = row.Column("kk6000").CurrencyValue
Var s1 As String = row.Column("kk6000").StringValue
Var sc1 As String = c1.ToString
Var sd1 As String = d1.ToString
Break // c1 is DESTROYED !
Next row
with a locale that doesnt use , and . as the separators is there still an issue ?
I tried this locally but dont think setting my locale worked as just a dimple debuglog of lDouble.tostring showed USA format still
makes me wonder if this is both a sqlite issue and how it determines what type affiinity that literal being inserted should have and xojoās conversions
EDIT : had to go look this up but it is possible as well to figure out what type affinity sqlite thinks is correct for a column - so we COULD for 100% certain see if it inserts the literal 5.2 as double by running a query like
SELECT typeof(kk6000) FROM test;
In any of the test to see if SQLItes affinity is causing issue
And if not rule that out entirely
My gut suspicion is that its not the issue
sure its the forum
No, itās the people on the forum.
I just donāt get the attitudes round here.
Its so toxic.
There is nothing wrong with hypothesising, and it often triggers trains of thought that may not have occurred.
you CANāT use a comma like that.
Fine.
But to me, sending a SQL command contained in a string to SQLLite in this manner, makes it SQLLiteās responsibility to interpret and store correctly.
Isnāt that what Xojo does?
In much the same way as I would expect sending a command to a DOS command line, a unix bash shell, or an HTTP POSTā¦ once sent, the responsibility is at the other end.
I donāt feel this is a Xojo bug.
If instead of a hard coded insert of 5.2 you create a variable, say a double, and insert using a prepared statement then retrieve it, does the same issue ensue ?
I asked that twice,
or use a parameterised query?
But out of curiosity, did you try a parameterised query?
but itās probably nonsense , soā¦
except that ISNāT legal sql occording to sqlite
see 3. Literal Values (Constants) on SQL Language Expressions
so iād say its NOT sqlites issue and that insert is fine - yours wouldnt be
and we CAN test that the affinity (or TYPE) of that column IS a double
if Xojo isnt reading that back correctly then its in Xojoās side of things Iād think