如何过滤 Postgresql jsonb 像键内的查询键

Question

id        data
0a        {"name" : "x1", "source_extended_attributes": {"alexa_pageviews": 6000}}
7ee       {"name" : "x2", "source_extended_attributes": {"alexa_pageviews": 6000}}
8d        {"name" : "x3", "source_extended_attributes": {"alexa_pageviews": 6000}}

The data column is defined as jsonb.

I need to use a select where alexa_pageviews but I can't.

I can use name like where data->>'name' = 'x1'

i need how access key inside key in PostgreSQL query

Answer 1

Simple: data->'source_extended_attributes'->>'alexa_pageviews' If you want to compare the value with something, there are several ways.

As text (returns JSON value as text explicitly using ->> operator):

data->'source_extended_attributes'->>'alexa_pageviews' like '6%'

As numeric (casts the TEXT representation to the NUMERIC value to the given type ( int )):

(data->'source_extended_attributes'->>'alexa_pageviews')::int > 5000

As JSON numeric (implicitly casts righthand TEXT constant to JSON type):

data->'source_extended_attributes'->'alexa_pageviews' > '999'