Hi Jim,
I'll speak at the Common Annual Conference (POWERUp18) in St Antonio and
I'll definitely hold the following sessions:
- Generating XML with SQL
- Consuming XML with SQL
- Generating JSON with SQL
- Consuming JSON with SQL
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxx> On Behalf Of Jim L. Bostwick
Sent: Montag, 12. März 2018 14:52
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Creating XML document via SQL - Db2 for i 7.2
Birgitta,
Thanks for your great example. I appreciate you providing a direct answer
to my question. I must admit I share Jon's thoughts about SQL, but that is
mostly due to my lack of use. I would definitely be interested in taking
one of your classes. Would that be through COMMON, or RPG/DB2 Summit?
Jim Bostwick
message: 1
date: Sat, 10 Mar 2018 11:24:13 +0100
from: "Birgitta Hauser"
<Hauser@xxxxxxxxxxxxxxx<mailto:Hauser@xxxxxxxxxxxxxxx>>
subject: RE: Creating XML document via SQL - Db2 for i 7.2
Hi Jim,
that is not as difficult.
You split your SQL-Statement into multiple Common Table Expressions that
construct the XML components. These CTEs are joined together and for
building the next component until the XML document is completed in the Final
Select.
Look at the following XML document:
<Request>
<Product>
ProductA
<Profile>
ProfileA
<Data>
<Field1>Field1A</Field1>
<Field2>2018-03-10</Field2>
</Data>
<NewGroup>
<Field3>10,56</Field3>
<Field4>Field4A</Field4>
</NewGroup>
</Profile>
</Product>
<Product>
ProductB
<Profile>
ProfileB
<Data>
<Field1>Field1B</Field1>
<Field2>2018-03-09</Field2>
</Data>
<NewGroup>
<Field3>125,20</Field3>
<Field4>Field4B</Field4>
</NewGroup>
</Profile>
</Product>
</Request>
This XML Document is generated by the following SQL-Statement With x as
(Select *
From (Values('ProductA', 'ProfileA', 'Field1A', Current_Date,
10,56 , 'Field4A'),
('ProductB', 'ProfileB', 'Field1B', Current_Date -
1 Day, 125,2 , 'Field4B'))
x (Product, Profile, Field1, Field2, Field3, Field4)),
-- Build the Data and NewGroup components
y as (Select Product, Profile, xmlrow(Field1 as "Field1",
Field2 as "Field2"
Option row "Data") yData,
xmlrow(Field3 as "Field3",
Field4 as "Field4"
Option row "NewGroup") yNewGroup
from x),
-- Build the nexted elements Product, Profile, with Data and NewGroup
z as (Select Product, Profile, XMLElement(Name "Product", Product,
XMLElement(Name "Profile", Profile,
yData,
yNewGroup)) zProduct
from y)
-- Final Select aggregate the different rows and include this information in
an root element
Select XMLElement(Name "Request", XMLAgg(zProduct))
from z;
Mit freundlichen Gr??en / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok) "What is
worse than training your staff and losing them? Not training them and
keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
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