> For the complete documentation index, see [llms.txt](https://wirebox.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wirebox.ortusbooks.com/advanced-topics/wirebox-object-populator/populatefromquerywithprefix.md). # populateFromQueryWithPrefix Populates an Object using only specific columns from a query. Useful for performing a query with joins that needs to populate multiple objects. ## Returns * This function returns any ## Arguments The structure to populate the object with. | Key | Type | Required | Default | Description | | -------------------- | ------- | -------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | target | any | Yes | --- | This can be an instantiated bean object or a bean instantiation path as a string. If you pass an instantiation path and the bean has an 'init' method. It will be executed. This method follows the bean contract (set{property\_name}). Example: setUsername(), setfname() | | qry | query | yes | --- | The query to populate the bean object with | | rowNumber | Numeric | No | 1 | The query row number to use for population | | scope | string | No | | Use scope injection instead of setters population. Ex: scope=variables.instance. | | trustedSetter | boolean | No | false | If set to true, the setter method will be called even if it does not exist in the bean | | include | string | No | | A list of keys to include in the population | | exclude | string | No | | A list of keys to exclude in the population | | prefix | string | Yes | --- | The prefix used to filter, Example: 'user\_' would apply to the following columns: 'user\_id' and 'user\_name' but not 'address\_id'. | | ignoreEmpty | boolean | No | false | Ignore empty values on populations, great for ORM population | | nullEmptyInclude | string | No | | A list of keys to NULL when empty | | nullEmptyExclude | string | No | | A list of keys to NOT NULL when empty | | composeRelationships | boolean | No | false | Automatically attempt to compose relationships from memento | --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://wirebox.ortusbooks.com/advanced-topics/wirebox-object-populator/populatefromquerywithprefix.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.