Hi Walid,
Thanks for the files. Being able to reproduce the problem is always the
best way to help...
The missing thing that makes it work for me is to
add .set(SQLDialect.POSTGRES) to your configuration. If you're not doing
that, the configured SQLDialect is just SQLDialect.DEFAULT, which produces
unspecified output (mostly just what you're using as input). The
interpreter dialect was indeed a distraction, it is not related to this
topic.
So, try this:
Settings settings = new Settings()
.withParseDialect(SQLDialect.ORACLE)
.withParseUnknownFunctions(ParseUnknownFunctions.IGNORE)
.withTransformTableListsToAnsiJoin(true)
.withTransformUnneededArithmeticExpressions(TransformUnneededArithmeticExpressions.ALWAYS)
.withTransformRownum(true)
.withParamType(ParamType.NAMED)
.withParamCastMode(ParamCastMode.ALWAYS);
Configuration jooqConfig = new DefaultConfiguration()
.set(getConnection())
.set(SQLDialect.POSTGRES) // Line added by me
.set(settings)
.set(ParseListener.onParseField(ctx -> {
if (ctx.parseKeywordIf("SYSDATE")) {
return DSL.field("localtimestamp");
}
return null;
}));
That will make DECODE work as you said. TO_NUMBER() seems to work for me,
irrespective of whether this is set or not, because we just parse that into
a CAST for all dialects. I guess it's worth looking into supporting that
more formally: https://github.com/jOOQ/jOOQ/issues/11746
However, indeed, TO_CHAR(1) stops working with PostgreSQL complaining about:
ERROR: function to_char(integer) does not exist
It seems a format is strictly required:
https://www.postgresql.org/docs/current/functions-formatting.html
So that's a bug:
https://github.com/jOOQ/jOOQ/issues/11747
As a workaround, just parse the TO_CHAR() function as well, as you have
already parsed SYSDATE:
.set(ParseListener.onParseField(ctx -> {
if (ctx.parseKeywordIf("SYSDATE")) {
return DSL.field("localtimestamp");
}
else if (ctx.parseFunctionNameIf("TO_CHAR")) {
ctx.parse('(');
Field<?> f1 = ctx.parseField();
Field<?> f2 = ctx.parseIf(',') ? ctx.parseField() : null;
ctx.parse(')');
return f2 == null ? f1.cast(SQLDataType.VARCHAR) :
DSL.toChar((Field) f1, (Field) f2);
}
return null;
}));
Thanks for your patience in this matter. Please let me know if I can be of
any further assistance.
On Thu, Apr 1, 2021 at 5:15 PM Walid CHAIB <[email protected]> wrote:
> Hi Lukas,
> It's just an execution of a preparedStatement.
> You can check it out in the attached files.
>
>
>
>
>
> Le jeu. 1 avr. 2021 à 16:04, Lukas Eder <[email protected]> a écrit :
>
>> Walid,
>>
>> The website doesn't offer specifying the interpreter dialect. What you
>> see there as input dialect is the parse dialect.
>>
>> But I can only really hypothesise what you're doing :) Why don't you show
>> me your code from your TestPostgreSQL class? If I can see the *exact* code
>> you tried, then I will be able to help you. If I don't see that code, then
>> I can only guess what it is you're trying to do.
>>
>> Thanks,
>> Lukas
>>
>> On Thu, Apr 1, 2021 at 4:40 PM Walid CHAIB <[email protected]>
>> wrote:
>>
>>> Hi Lukas,
>>>
>>> 1- When I specify the interpreter dialect, Jooq parses the oracle
>>> functions like decode , nvl ... but it doesn't parse the oracle cast
>>> functions like to_char(bigint) , to_number(varchar)
>>> 2- When I don't specify the interpreter dialect, Jooq parse the oracle
>>> cast functions to cast( ... as ...) but it doesn't parse the predefined
>>> functions like decode as you can see in example :
>>> SELECT DECODE(1,1 , 'One') From dual
>>> Exception in thread "main" org.postgresql.util.PSQLException: ERREUR: la
>>> fonction decode(bigint, bigint, character varying) n'existe pas
>>> Indice : Aucune fonction ne correspond au nom donné et aux types
>>> d'arguments.
>>> Vous devez ajouter des conversions explicites de type.
>>> Position : 8
>>> at
>>> org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2553)
>>> at
>>> org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2285)
>>> at
>>> org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:323)
>>> at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:473)
>>> at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:393)
>>> at
>>> org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:164)
>>> at
>>> org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:114)
>>> at org.jooq.impl.ParsingStatement.executeQuery(ParsingStatement.java:339)
>>> at com.tbs.db.TestPostgreSQL.main(TestPostgreSQL.java:31)
>>>
>>> Even with the website https://www.jooq.org/translate/, It's the same
>>> behaviour ...
>>>
>>>
>>> Le jeu. 1 avr. 2021 à 15:25, Lukas Eder <[email protected]> a écrit :
>>>
>>>> Hi Walid,
>>>>
>>>> That's surprising, there isn't a direct link between interpreting (DDL)
>>>> and parsing. Can you show some example code that helps reproduce what
>>>> you're seeing? Perhaps there's a more complex interaction in your setup
>>>> that can't be easily derived from your description.
>>>>
>>>> Thanks,
>>>> Lukas
>>>>
>>>> On Thu, Apr 1, 2021 at 3:11 PM Walid CHAIB <[email protected]>
>>>> wrote:
>>>>
>>>>> When I don't specify the interpreter dialect Joqq doesn't parse the
>>>>> oracle function like nvl and decode ...
>>>>>
>>>>> Le jeu. 1 avr. 2021 à 13:27, Lukas Eder <[email protected]> a
>>>>> écrit :
>>>>>
>>>>>> Hi Walid,
>>>>>>
>>>>>> You can safely ignore the interpreter dialect. It has nothing to do
>>>>>> with your current work. You only need to work with the parse dialect. But
>>>>>> that is only used to resolve ambiguous syntax (e.g. select a = b in
>>>>>> PostgreSQL vs SQL Server).
>>>>>>
>>>>>> Now, let's rewind and look at what you're actually trying to do?
>>>>>>
>>>>>> Cheers,
>>>>>> Lukas
>>>>>>
>>>>>> On Thu, Apr 1, 2021 at 1:46 PM Walid CHAIB <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi Lukas,
>>>>>>>
>>>>>>> Is there a parameter I have to set it, so I can parse cast functions
>>>>>>> ( to_char(),to_number() ...) to cast( x as varchar ) , cast (x as int)
>>>>>>> because when specifying
>>>>>>> .withInterpreterDialect(SQLDialect.POSTGRES_12), jooq doesn't parse it,
>>>>>>> and
>>>>>>> when i didn't specify the dialect interpreter i get problems with
>>>>>>> parsing
>>>>>>> other functions like decode ?
>>>>>>>
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