Re: SQL/JSON: functions

On Thu, Mar 31, 2022 at 04:25:58PM -0400, Andrew Dunstan wrote:
> No code chunks left, only a documentation patch which should land

Documentation review for a6baa4bad.

> Construct a JSON the provided strings:

a JSON what ?
*from* the provided strings ?

> Construct a JSON from the provided values various types:

should say "a JSON scalar" ?
*of* various types ?

> Construct a JSON object from the provided key/value pairs of various types:

For comparison, that one looks ok.

+ <function>JSON_EXISTS</function> function checks whether the provided
+ <function>JSON_VALUE</function> function extracts a value from the provided
+ <function>JSON_QUERY</function> function extracts an <acronym>SQL/JSON</acronym>
+ <function>JSON_TABLE</function> function queries <acronym>JSON</acronym> data
+ <function>JSON_TABLE</function> uses the
+ <function>JSON_SERIALIZE</function> function transforms a SQL/JSON value

I think all these should all begin with "THE >...< function ...", like the
others do.

+To use other types, you must create the <literal>CAST</literal> from <type>json</type> for this type.
=> create a cast from json to this type.

+Values can be null, but not keys.
I think it's clearer to say "..but keys cannot."

+ For any scalar other than a number or a Boolean the text

Boolean COMMA the text

+ The path name must be unique and cannot coincide with column names.
Maybe say "name must be unique and distinct from the column names."

+ ... If you specify a <command>GROUP BY</command>
+ or an <command>ORDER BY</command> clause, this function returns a separate JSON object
+ for each table row.

"for each table row" sounds inaccurate or imprecise. The SELECT docs say this:
| GROUP BY will condense into a single row all selected rows that share the same values for the grouped expressions

BTW, the documentation references look a little like OIDs...
Does someone already have an SNMP-based doc browser ?
| For details, see Section 9.16.3.4.2.