Re: dataformatting in nodeJS SQL interface with IBM db2a

Thank you Nathan for the feedback.

Yes! exactly as you state it!

I would wote for an RFE (or post one myself) that makes it possible to set
these options like trimming and defaulting to JSON types in the DB
connection call.

That makes is backward compatible and will not polute the SQL statement you
write. Though we still need some way to map (cast) dates, booleans and
blobs etc. for node.js - and a UDTF will not do the trick: they only work
for “read-only” result sets as you can imagine ( I have been down that
road).

As a node.js developer you still need a wrapper to convert into and from
sqltypes to/from JSON types.

One thought:

You can create SQL types today.

Create type bool as int;

However you can’t create enumerators and theirs domains like

0=false,1=true

So node.js receives the true/false (and even null) but SQL reads and/or
stores the 0 and 1

There is still some plumbing to do and a way to get it simple and right.

The plumbing part is definitely for IBM to do, so we don’t end up with
loads of homegrown frameworks that pretty much do the same.

...does it make sense?

lør. 24. mar. 2018 kl. 18.37 skrev Nathan Andelin <nandelin@xxxxxxxxx>:

Niels,

Could you clarify? Are you suggesting that somebody submit an RFE to have
IBM add new SQL connection settings that implement the desired "trim"
behaviors?

Nathan.


On Sat, Mar 24, 2018 at 9:08 AM, Niels Liisberg <nli@xxxxxxxxxxxxxxxxx>
wrote:

At better solution would be: set the trim option on the connection

since

that is already IBM proprietary . Doing it on the select statement

would

pollute the sql syntax.

Why don't you raise a RFE for both trimming and sql-alike data types in

the

result-set. I think my friend Jesse Gorzinsky would love that.
lør. 24. mar. 2018 kl. 15.52 skrev Henrik Rützou <hr@xxxxxxxxxxxx>:

Nathan

a lazy programmer (and I'm one) is a programmer that dosn't code 100
similar programs from one end to the other - they have fun making a
program generator that then does the job they do not bother to make

;-)

On Sat, Mar 24, 2018 at 3:10 PM, Nathan Andelin <nandelin@xxxxxxxxx>
wrote:

Henrik,

The term "lazy programmer" is sometimes used with negative

connotation,

and

other times used with positive connotation. In this case, I don't

fault

programmers who would rather not code the full SQL statement,

including

rtrim() function calls required to trim fields.

I was just trying to say that this is a case where invoking a REST

web

service API would provide a simpler interface for programmers. A
web-service API would relieve programmers of the verbosity and

ofttimes

complexity of coding their own SQL statements.

I'm just suggesting that this is a case where a REST web service

API

would

have advantages over Node's db2a interface.



On Sat, Mar 24, 2018 at 7:41 AM, Henrik Rützou <hr@xxxxxxxxxxxx>

wrote:

Nathan

you may call it lazy to want to have a transparent interface that

hasn't

to

be
touched every time you add a new or remove a column to a table.

Especially removing a column will cause errors if you specify

resultsets

by specific field names, imho they sould automatically be removed

from

the rest service and that should automatically result in the

field

are

removed
in the UI regardless of code defining the field may exsist.

We are back to constructing an UI where if you filter the SSN

from

UserA

it dosn't appear in his UI but dons't filter it from UserB it

appears -

both running
on the same code.

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Niels Liisberg
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System & Method A/S
Phone +45 70 20 30 10
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