Writing jsonpopulaterecord in the FROM clause is good practice, since all of the extracted columns are available for use without duplicate function calls. We can do this with only one operation: one update main query that contains two sub-queries to build indices. Select items by the value of a first level attribute (1 way) You can query with the > operator on metadata. While the example below uses a constant JSON value, typical use would be to reference a json or jsonb column laterally from another table in the query's FROM clause. 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.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. □ "I know I want to update choice 9beb5da3 in question 73294354 I don't know what is their positions in their respective arrays." You could use an exists condition with a correlated. In most cases, when you work with JSON in PostgreSQL, you should be using JSONB. The only thing we know is the IDs of the object. Solved-How to query Json array in jsonb in Postgresql-postgresql. JSONB supports indexing the JSON data, and is very efficient at parsing and querying the JSON data. Still, the problem is that we don't know the actual positions of the items in the arrays. Enter fullscreen mode Exit fullscreen mode
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