Table fields from Mariadb to Base

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Harvey Nimmo Harvey Nimmo
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Table fields from Mariadb to Base

I am connecting a Base client (Version: 6.1.3.2) to a remote mariadb
using the MySQL (JDBC) connector.

A form I had generated in Base needed a new field that had to be added
to the source (Base) query and the related (Mariadb) table.

Having added the new field to the table using the Base client, I
expected it to appear in the query which is of the form (SELECT * FROM
<tablename>). It didn't until I closed Base and restarted it.

Is this a bug? Known or new?

Best Regards

Harvey

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Dan Lewis Dan Lewis
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Re: Table fields from Mariadb to Base


On 7/16/19 1:54 PM, Harvey Nimmo wrote:

> I am connecting a Base client (Version: 6.1.3.2) to a remote mariadb
> using the MySQL (JDBC) connector.
>
> A form I had generated in Base needed a new field that had to be added
> to the source (Base) query and the related (Mariadb) table.
>
> Having added the new field to the table using the Base client, I
> expected it to appear in the query which is of the form (SELECT * FROM
> <tablename>). It didn't until I closed Base and restarted it.
>
> Is this a bug? Known or new?
>
> Best Regards
>
> Harvey

I did not have any problem with this. I did this:

1) Created a new query from a current table in my database, Commentary.
Use SQL, I added
         SELECT * FROM `Bible`.`Commentary` `Commentary`

2) Added a field to Commentary table.

3) Saved the table.

4) Saved the database. (Did you do this?)

5)I opened the query. (If your query was already open, you should have
clicked the Run button.)

Dan


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Robert Großkopf Robert Großkopf
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Re: Table fields from Mariadb to Base

In reply to this post by Harvey Nimmo
Hi Haevey,
>
> Having added the new field to the table using the Base client, I
> expected it to appear in the query which is of the form (SELECT * FROM
> <tablename>). It didn't until I closed Base and restarted it.

How did you add the field? Tools → SQL? Or did you add it in the GUI.
If added through Tools → SQL a refresh of the tables is needed (View →
Refresh Tables). The GUI doesn't recognize automatically what has been
changed in this way.

Regards

Robert
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LibreOffice Community: http://robert.familiegrosskopf.de/map_3


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Harvey Nimmo Harvey Nimmo
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Re: Table fields from Mariadb to Base

On Tue, 2019-07-16 at 21:28 +0200, Robert Großkopf wrote:

> Hi Haevey,
> >
> > Having added the new field to the table using the Base client, I
> > expected it to appear in the query which is of the form (SELECT *
> > FROM
> > <tablename>). It didn't until I closed Base and restarted it.
>
> How did you add the field? Tools → SQL? Or did you add it in the GUI.
> If added through Tools → SQL a refresh of the tables is needed (View
> →
> Refresh Tables). The GUI doesn't recognize automatically what has
> been
> changed in this way.
>
> Regards
>
> Robert
> --
> Homepage: http://robert.familiegrosskopf.de
> LibreOffice Community: http://robert.familiegrosskopf.de/map_3
>
Thanks for the input!

I added the field via the Base table GUI. Of course, I could have added
the new field explicitly to the query (so that the field may then
appear twice) (but why?). Maybe this behaviour is only evident with a
remote database?

Cheers
Harvey



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Harvey Nimmo Harvey Nimmo
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Re: Table fields from Mariadb to Base

On Tue, 2019-07-16 at 22:11 +0200, Harvey Nimmo wrote:

> On Tue, 2019-07-16 at 21:28 +0200, Robert Großkopf wrote:
> > Hi Haevey,
> > >
> > > Having added the new field to the table using the Base client, I
> > > expected it to appear in the query which is of the form (SELECT *
> > > FROM
> > > <tablename>). It didn't until I closed Base and restarted it.
> >
> > How did you add the field? Tools → SQL? Or did you add it in the
> > GUI.
> > If added through Tools → SQL a refresh of the tables is needed
> > (View
> > →
> > Refresh Tables). The GUI doesn't recognize automatically what has
> > been
> > changed in this way.
> >
> > Regards
> >
> > Robert
> > --
> > Homepage: http://robert.familiegrosskopf.de
> > LibreOffice Community: http://robert.familiegrosskopf.de/map_3
> >
>
> Thanks for the input!
>
> I added the field via the Base table GUI. Of course, I could have
> added
> the new field explicitly to the query (so that the field may then
> appear twice) (but why?). Maybe this behaviour is only evident with a
> remote database?
>
> Cheers
> Harvey
>
A further input: my first action after updating the table was to go to
edit the form (to add the new field). The field did not show up in the
list of controls. It was this that made me open the query to check if
it were there. It wasn't, so I then opened the table, where it was
shown as expected, no data, as yet, having been entered in any of the
new fields.

Now I have slight doubts, having tried adding a new test field. This
field showed up when I opened the query, but was not to be seen in the
data control field of the form. In other words, maybe the order 'open
query/open form (for edit)' or the other way round, as in the
previously reported case, produces different results.

Cheers
Harvey

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Robert Großkopf Robert Großkopf
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Re: Table fields from Mariadb to Base

Hi Harvey,

couldn't see this behaviour in LO 6.2.5.2 on OpenSUSE 15, 64bit rpm
Linux. But my MariaDB is a local database. Think it is a problem of the
remote-connection to your database. The changing of the table must reach
the database and after changing the table inside the database the
information could be send back to the query.

Do you use parameters for the connetion to the database, for example
jdbc:mysql://«Host of database»:3306/«databasename»?autoReconnect=true

@Dan: If you add a field to a table for an external database the
Base-file must not be saved. There has nothing been changed in Base,
only in the (external) database.

Regards

Robert
--
Homepage: http://robert.familiegrosskopf.de
LibreOffice Community: http://robert.familiegrosskopf.de/map_3


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Harvey Nimmo Harvey Nimmo
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Re: Table fields from Mariadb to Base

On Wed, 2019-07-17 at 09:09 +0200, Robert Großkopf wrote:

> Hi Harvey,
>
> couldn't see this behaviour in LO 6.2.5.2 on OpenSUSE 15, 64bit rpm
> Linux. But my MariaDB is a local database. Think it is a problem of
> the
> remote-connection to your database. The changing of the table must
> reach
> the database and after changing the table inside the database the
> information could be send back to the query.
>
> Do you use parameters for the connetion to the database, for example
> jdbc:mysql://«Host of
> database»:3306/«databasename»?autoReconnect=true
>
> @Dan: If you add a field to a table for an external database the
> Base-file must not be saved. There has nothing been changed in Base,
> only in the (external) database.
>
> Regards
>
> Robert
> --
> Homepage: http://robert.familiegrosskopf.de
> LibreOffice Community: http://robert.familiegrosskopf.de/map_3
>
Hallo Robert,

it seems that autoReconnect=true does the trick. I had been using the
MySQL(JDBC) method where there seemed to be no place to set the
autoReconnect option. Having switched to the pure JDBC method, I can
add autoReconnect=true and it works now as expected.

Many thanks!

Harvey

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Harvey Nimmo Harvey Nimmo
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Re: Table fields from Mariadb to Base

On Wed, 2019-07-17 at 09:54 +0200, Harvey Nimmo wrote:

> On Wed, 2019-07-17 at 09:09 +0200, Robert Großkopf wrote:
> > Hi Harvey,
> >
> > couldn't see this behaviour in LO 6.2.5.2 on OpenSUSE 15, 64bit rpm
> > Linux. But my MariaDB is a local database. Think it is a problem of
> > the
> > remote-connection to your database. The changing of the table must
> > reach
> > the database and after changing the table inside the database the
> > information could be send back to the query.
> >
> > Do you use parameters for the connetion to the database, for
> > example
> > jdbc:mysql://«Host of
> > database»:3306/«databasename»?autoReconnect=true
> >
> > @Dan: If you add a field to a table for an external database the
> > Base-file must not be saved. There has nothing been changed in
> > Base,
> > only in the (external) database.
> >
> > Regards
> >
> > Robert
> > --
> > Homepage: http://robert.familiegrosskopf.de
> > LibreOffice Community: http://robert.familiegrosskopf.de/map_3
> >
>
> Hallo Robert,
>
> it seems that autoReconnect=true does the trick. I had been using the
> MySQL(JDBC) method where there seemed to be no place to set the
> autoReconnect option. Having switched to the pure JDBC method, I can
> add autoReconnect=true and it works now as expected.
>
> Many thanks!
>
> Harvey

Ah but.....it seems to be not so simple...:-J
After setting the method to JDBC with the option autoReconnect=true, it
becomes not possible to edit the existing fields of the table. A new
field could be added, but the existing ones cannot be changed.

So I have to return to the MySQL(JDBC) option. However, it accepts
adding ?autoReconnect=true behind the database name AND the addition of
new fields is transferred to the forms function immediately.

In other words, the problem is solved, by adding the option          
?autoReconnect=true behind the database name in every case.

Is that documented somewhere?

Many thanks again

Cheers
Harvey



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Alex Thurgood Alex Thurgood
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Re: Table fields from Mariadb to Base

Le 17/07/2019 à 11:28, Harvey Nimmo a écrit :

Hi Harvey,


> So I have to return to the MySQL(JDBC) option. However, it accepts
> adding ?autoReconnect=true behind the database name AND the addition of
> new fields is transferred to the forms function immediately.
>
> In other words, the problem is solved, by adding the option          
> ?autoReconnect=true behind the database name in every case.
>
> Is that documented somewhere?
>

Known yes, at least to those who are used to dealing with the
idiosyncrasies of JDBC connection parameters through the LO db UI, but
documented generally, not so sure, possibly, here and there in the
relevant forums.


Alex


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