![]() We can do this with only one operation: one update main query that contains two sub-queries to build indices. It's not reliable: the positions of data could have changed during this process, between the two queries.It's slow get all the record data from DB, find positions programmatically, then update the data in the database.JSON is the regular JSON data type and was added in PostgreSQL 9.2. There are two data types in PostgreSQL for JSON: JSON and JSONB. You can update a JSON field using an UPDATE statement. How do we create a field in PostgreSQL Two JSON Data Types. The JSON support in PostgreSQL 9. So you’ve learned a bit about JSON data and why you might want to use it. JSON indexing and partial updates are not currently supported. One could have run one first query to get the whole column data, then iterate over objects with their favorite programming language to find item positions, then use these positions to configure the jsonb_set path parameter in order to run the update query. How to Create and Populate a JSON Field in PostgreSQL. ![]() □ "I know I want to update choice 9beb5da3 in question 73294354 I don't know what is their positions in their respective arrays." The only thing we know is the IDs of the object. To update values of fields in jsonb we must refer back to JSON Processing Functions article. In this post, we'll talk about a couple of functions that can be used to update JSON data. Also, can either json update function somehow ignore a null field in the JSON, i.e. Still, the problem is that we don't know the actual positions of the items in the arrays. Updating JSON Data in PostgreSQL If you're storing JSON data in Postgres, you'll eventually need to update it. ![]() Enter fullscreen mode Exit fullscreen mode To update field inside, Dont use the concat operator.
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