Postgresql json like query

If the data column is text type, then use ->> on cast:

select * from module_data where data::json->>'title' like '%Board%'

If it's already json:

select * from module_data where data->>'title' like '%Board%'

I found the following is more straight-forward and easier for jsonb type of columns:

select * from table_name
where 
column_name::text like '%Something%'

Found a good article on more examples and implementations: https://www.compose.com/articles/faster-operations-with-the-jsonb-data-type-in-postgresql/

Hope it helps!

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