Fix vague comment in jsonb documentation
The sample query fails because of an attempt to update the key of a numeric. But the comment says it's just because of the missing object key. That's not correct because jsonb subscription automatically adds missing keys. Reported-by: Nikita Konev
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@ -648,7 +648,8 @@ SELECT ('[1, "2", null]'::jsonb)[1];
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UPDATE table_name SET jsonb_field['key'] = '1';
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-- This will raise an error if any record's jsonb_field['a']['b'] is something
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-- other than an object. For example, the value {"a": 1} has no 'b' key.
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-- other than an object. For example, the value {"a": 1} has a numeric value
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-- of the key 'a'.
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UPDATE table_name SET jsonb_field['a']['b']['c'] = '1';
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-- Filter records using a WHERE clause with subscripting. Since the result of
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