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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Aug 22, 2023

RELATED IDEAS

JSON_UPDATE - Updating a true/false value

Whith JSON_UPDATE it is possible to modify existing JSON data. It is possbile to exchange a single value, to add a key/value pair, to exchange an existing Object, to add an existing Object, exchange an array and add a new array.

... but it is not possible to exchange a Boolean value, i.e. it is not possible to exchange the true literal in the following JSON document with false. The Boolean value (i.e. true or false without quotes arroung) is replaced with a string, i.e. "TRUE" or "FALSE". 

The only way to exhange the true/false literal, is to rxchange the whole Object. (a true/false literal in an object is not converted into a  string).

It would be great if we could not only replace numeric values and strings and null values, but also true and false literals without replacing the whole object. 

UPDATE_JSON - B...
UPDATE_JSON - Boolean Values.sql
 UPDATE_JSON - Boolean Values.sql
Open full size
UPDATE_JSON - Boolean Values.sql
Idea priority Medium
  • Guest
    Reply
    |     Sep 23, 2023
    IBM does not intend to provide a solution to this Idea at this time, so it is being closed.

    This request to convert the SQL Boolean data type directly to a JSON Boolean value cannot be implemented without adding extra syntax to the JSON_UPDATE function due to compatibility considerations. While this could be done, this support will not be provided any time soon so the Idea is being closed.

    As an alternative, a Boolean value can be converted to a JSON Boolean value by using a CASE construct. This allows the value to be updated without reconstructing the entire object.

    create variable mylib.boolvar boolean;
    set mylib.boolvar = true;
    values JSON_UPDATE('{"a":7}','SET','$.a',mylib.boolvar); -- {"a":"TRUE"}
    values JSON_UPDATE('{"a":7}','SET','$.a', case mylib.boolvar when true then 'true' when false then 'false' end); -- {"a":true}


    Db2 for i development team
    IBM Power Systems Development

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