jsonb find a value in an array - sql

Question

There is such a data structure:
Column "recipient" type jsonb
{
"phoneNumbers": [
{
"isDefault": true,
"type": "MOBILE",
"number": "3454654645"
},
{
"isDefault": true,
"type": "MOBILE",
"number": "12423543645"
}
]
}
I need to write a search request by number. In the postgres documentation, I did not find a search by value in an array, only it is obtained by an index. It doesn't suit me
I made a query like this, it gets executed, but are there any other ways to search through an array?
SELECT *
FROM my_table
WHERE recipient -> 'phoneNumbers' #> '[{"number":3454654645}]'

Answer 1

That's pretty much the best way, yes.
If you have a (GIST) index on recipient the index would not be used by your condition. But the following could make use of such an index:
SELECT *
FROM my_table
WHERE recipient #> '["phoneNumbers": {"number":3454654645}]}'
If you are using Postgres 12 or later, you can also use a JSON path expression:
SELECT *
FROM my_table
WHERE recipient ## '$.phoneNumbers[*].number == "12423543645"'
If you can't pass a JSON object to your query, you can use an EXISTS sub-select:
SELECT mt.*
FROM my_table mt
WHERE EXISTS (SELECT *
FROM jsonb_array_elements_text(mt.recipient -> 'phoneNumbers') as x(element)
WHERE x.element ->> 'number' = '3454654645')
The '3454654645' can be passed as a parameter to your query. This will never make use of an index though.