from products p where exists (select from jsonbarrayelements (p.properties->'weight') as t (weight) where t. Support for working with JSON in PostgreSQL has become increasingly powerful since it was first introduced in version 9.2. (As with all functions returning record, the calling query must explicitly define the structure of the record with an AS clause.) Each element of the JSON. The error I'm getting is ERROR: column reference "last_sequence_number" is ambiguous (SQLSTATE 42702) and I'm not sure if I've just got something in the wrong place or if it is not possible the way I'm intending in postgresql 15. You need to use a sub-query that unnests all array elements together with an EXISTS predicate: select p. row is upserted with new values if the last_sequence_number on the row is less than the new value.row is inserted if the uuid has not been seen,.WHERE last_sequence_number IS NULL OR last_seequence_number < $10 The SQL currently looks something like this: INSERT INTO events ( The use case is retrieving events from a stream that might be out of order, so I want to ignore those if the sequence number in the row is greater than the one I'm trying to update. Make sure you use 1080p to view the video. For example, to fetch data for an author whose name is. In this article, we will explore JSONQUERY () functions in SQL Server to extract JSON objects and array from the JSON Data. If the expression matches the queried JSON data, the corresponding JSON item, or set of items, is returned. JSON query functions and operators pass the provided path expression to the path engine for evaluation. You can even use multiple filters in the same where clause using the and or the or operators. Querying JSON Data in PostgreSQL Before querying JSON, we must first have a table with JSON data to query Create a table with an id column and a jsonb column. In PostgreSQL, path expressions are implemented as the jsonpath data type and can use any elements described in Section 8.14.7. I am trying to build a SQL statement that allows for an upsert but does not do an update if a sequence number is older than the current value. Postgres: Filter Query Results / Search Queries The where argument You can use the where argument in your queries to filter results based on some field’s values (even nested objects' fields).
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