How to do parent children one query in MySQL?
For example Fruit id is 1, and Orange is one of the fruit so the parent is 1. However I want to do an efficient MySQL query to fetch all records in the format parent->children->parent->children format. How can I do that? You need a recursive join which mysql doesn’t support.
Can a parent have more than one child?
I don’t allow children to have children, so it’s just one parent, with any number of children. I think I’ve seen this done with unions before, or inner joins. Parents are records with no parent_id. Children have parent_id equal to the parent comment’s id.
How to create a hierarchical query in MySQL?
Since this query will come after the ancestry one, we can use accumulated value of @cl (which we used to calculate level in the previous query) as a seed. To do that, we can take the level returned by the descendancy tree query, and just add @cl to it.
When do I expect a result in MySQL?
The result i was expecting, when filtering the data, where id=1, it will generate the result i’m expecting. or this is the illustration. i’ve been looking everywhere, and reading this http://mikehillyer.com/articles/managing-hierarchical-data-in-mysql/, but i didn’t find the result i was looking for..
How to query child to parent like contact to parent?
How to query child to parent like contact to parent..and how to query master lookup relations. This just an example on how the parent-child query works… Hope this might helps… If you want get the parent object information then you need to use like this.
How to query parent record with more than 2 child records?
Parent record has more than 2 child records. so while using child to parent query, the field Name in parent object is Text, it is not Auto Number, it is stored in Name field only. I tried ur query but it doesnt work.
How to use where clause in parent to child soql?
Assuming the child object name as ChildObjectName__c and lookup API name on child is LookupName__c, your query with where clause would look as: I don’t think we can use similar to your question where only child object’s field will be in where clause. Yes with parent field it can be used similar to Raul has suggested.