sorry, yes I mean - DSLContext.fetch(<SQL>)
And here is what I'm trying :
final SelectJoinStep<Record> step = dslContext
.select( (Collection<? extends Field<?>>) (Collection) fields
).from( table( USER ) );
Condition condition = field("user").length().eq(0);
step.where(condition)
step.fetch()
In this case this case expecting fetch() to return Records matching for
empty user.
which does not seems working for H2 DB.
However if ran SQL query on H2 console - select * from user where user=''
return results (or using LENGTH function of H2 to compare empty string).
In addition to empty value check, field.isNull() is also not working.
And like above - select * from user where user is null --> works fine
directly on H2 console.
In short trying to find out null and empty user values in DB.
Thanks
On Tue, Nov 4, 2014 at 10:14 PM, Lukas Eder <[email protected]> wrote:
> I'm very sorry, I don't fully understand the issue you're experiencing yet.
>
> When you write
>
> even tried - DSLContext.select("select user from SAMPLE where user is
>> null") is not working.
>
>
> Did you try your query exactly like this? There is no "select(String)"
> method on the DSLContext type. Perhaps you meant "DSLContext.fetch()"?
>
> In any case, please provide us with all necessary steps to help you. What
> I'm still missing to understand your issue is:
>
> What (exact) jOOQ queries did you write? What did they return? What did
> you expect them to return?
>
> Best,
> Lukas
>
> 2014-11-04 21:07 GMT+01:00 <[email protected]>:
>
>> Please find sample H2 DB file attached.
>> or can use
>> 1. CREATE TABLE SAMPLE (USER VARCHAR (20))
>> 2. then insert, '',NULL,'xyz' value.
>>
>> both empty and null conditions are not working for me via JOOQ API,
>> however SQL formed by JOOQ does execute correctly on H2 Console and return
>> results.
>> even tried - DSLContext.select("select user from SAMPLE where user is
>> null") is not working.
>>
>> Thanks
>>
>> On Tuesday, November 4, 2014 11:14:20 AM UTC-8, Lukas Eder wrote:
>>>
>>> Hello,
>>>
>>> Both field.length().eq(0) and field.eq("") would be correct
>>> Can you provide some sample data to reproduce this issue?
>>>
>>> Also, in case you're using H2 in Oracle compatibility mode, there's a
>>> chance that you're using Oracle behaviour, in case of which empty strings
>>> and NULL would be the same thing. See:
>>> http://www.h2database.com/javadoc/org/h2/engine/Mode.
>>> html?highlight=oracle&search=oracle#treatemptystringsasnull
>>>
>>> Cheers,
>>> Lukas
>>>
>>> 2014-11-04 19:51 GMT+01:00 <[email protected]>:
>>>
>>>> Hi,
>>>>
>>>> I have a table in H2 having column of tyI'm pe string with null as well
>>>> as empty value.
>>>>
>>>> So like to know jooq condition to select empty values for a row.
>>>>
>>>> jooq --> field.isNull() check allows me to select null value
>>>>
>>>> however for empty value tried following, but its not working.
>>>>
>>>> field.length.eq(0) or field.eq("")
>>>>
>>>> Could you please provide any pointers, whats going wrong here?
>>>>
>>>> Thanks
>>>>
>>>>
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