How to query nested jsonb format data column in postgresql?

@denis 

To query nested JSONB data in a column in PostgreSQL, you can use the -> operator to extract a specific key or field from the JSONB data. You can also use the #> operator to extract a nested key or field. Here are some examples:

1. To query a specific key from a JSONB data column:

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SELECT column_name->'key_name' 
FROM table_name

1. To query a nested key from a JSONB data column:

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SELECT column_name #> '{outer_key, inner_key}' 
FROM table_name

1. To filter rows based on a nested key value:

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SELECT *
FROM table_name
WHERE column_name->'outer_key'->>'inner_key' = 'desired_value'

1. To search for values in nested JSONB objects:

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SELECT *
FROM table_name
WHERE column_name @> '{"outer_key": {"inner_key": "desired_value"}}'

These are just a few examples of how you can query nested JSONB data in a PostgreSQL column. You can adapt these examples to your specific data structure and query needs.