Re: json_table(httpgetclob, nested array

On Nov 17, 2019, at 4:39 PM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

Been a long couple of days.

exec sql select * into :wCount, :wSeas
from json_table(systools.httpgetclob(:wURL, ''), '$'
columns(
wData_length dec(3,0) path 'lax $.wData_length',
nested 'lax $.SeasOceans[*]'
columns(
SeasOceans varchar(20) path 'lax $')) );

returns the count and the first array element with an sql message:

"Result of SELECT more than one row.
SQLCODE = -811"

Which is not incorrect, but I thought was handled by "nested"? Perhaps it is related to SQLRPGLE more than to SQL?



On 11/15/2019 1:18 PM, Peter Dow wrote:

The documentation I was reading at https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/sqlp/rbafyjsontable.htm

did not have an explanation of the "path". Reading further, I found where it had example of an array within the json object. That got me to

SELECT * FROM json_table('
{
"wData_length":14,
"SeasOceans":[
"Adriatic Sea",
"Arctic Ocean",
"Atlantic Ocean",
"Bay of Bengal",
"Caribbean Sea"
]
}',
'lax $.SeasOceans[*]'
COLUMNS(
SeasOceans varchar(40) PATH 'lax $')
) as jt

which returns

....+....1....+....2....+....3....+....4
SEASOCEANS
Adriatic Sea
Arctic Ocean
Atlantic Ocean
Bay of Bengal
Caribbean Sea
******** End of data ********

I still have no idea what the lax in the path means. I tried changing it to abc and it didn't complain, but it didn't select anything either.

--
*Peter Dow* /
Dow Software Services, Inc.
909 793-9050
petercdow@xxxxxxxxx <mailto:petercdow@xxxxxxxxx>
pdow@xxxxxxxxxxxxxx <mailto:pdow@xxxxxxxxxxxxxx> /

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