item is the name of the with-subquery above, we can now access the dynamically built path and selected customer id SET json_data = jsonb_set (json_data, item. Jsonb_array_elements (json_data - > 'items' ) WITH ORDINALITY arr (item, index ) ) - Now we actually start updating the invoices UPDATE invoice i source table FROM invoice, - flatten the array using jsonb_array_elements and allow access for both, the item itself (so you can access the properties of the item object) and the index using WITH ORDINALITY Id, - Subquery to select the customerId based on the contract id, aliased as customerId for easier reference ( SELECT (json_data - > 'customerId' ):: BIGINT FROM contract where id = (item - > 'contractId' ):: BIGINT ) AS customerId ' ):: TEXT AS path, - We need the id for updating the correct entry later WITH item AS ( SELECT - dynamically concat the JSONB path. Please feel free to ask if you have any questions.- The basic value of SELECT in WITH is to break down complicated queries into simpler parts. Read more from the product documentation here. NET provider for JSON, this library also provides advanced features like as Authorization, Caching, Connection Pooling, etc. While this blog shows the basic usage of the ADO. In this blog, we saw querying flat/relational JSON data using the C1 ADO. The data can then be used in a grid/chart as shown below: Public static C1JsonConnectionStringBuilder JsonConnectionBuilder ) Public static string JsonDataPath => "Data\\EmployeesData.json" The following shows an example of creating a connection string for flat data: public static class Utils JSON Path: Specifies which node to read from the JSON content.You can connect to local files or HTTP streams. Uri: Specifies the URI for the JSON resource location.The different data models available are – the Top Level Document Model, Flattened Model, and Relational Model. Specifying the DataModel, let’s you configure how object arrays are modeled as tables. JSON DataModel: It specifies the access mechanism that is used for reading the JSON data. Creating a connection string requires three items: We will be using C1JsonConnectionStringBuilder to create our connection string. In order to connect with our data source, we would need a connection string.
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