Обсуждение: Multiple sets of results from recursive query
Has anyone come across multiple sets of results with recursive query?
How to handle it?
Regards,
David
What exact problem are you trying to solve? Recursive CTEs return one row per internal invocation, so they already return a "set" of results, but you could use arrays or json if you wanted to pack in extra information per returned row.
On Sun, Jul 16, 2023 at 6:41 AM Shaozhong SHI <shishaozhong@gmail.com> wrote:
Has anyone come across multiple sets of results with recursive query?How to handle it?Regards,David
On Monday, 17 July 2023, Greg Sabino Mullane <htamfids@gmail.com> wrote:
What exact problem are you trying to solve? Recursive CTEs return one row per internal invocation, so they already return a "set" of results, but you could use arrays or json if you wanted to pack in extra information per returned row.On Sun, Jul 16, 2023 at 6:41 AM Shaozhong SHI <shishaozhong@gmail.com> wrote:Has anyone come across multiple sets of results with recursive query?How to handle it？
Surely， there must be possible to find all route paths.
Regards, David
A quick google provides content that may help: https://www.sisense.com/blog/postgres-recursive-cte/
The issue is that you aren't asking a specific question with a well defined answer. Provide examples of your data and what you are trying to achieve for the best results in a forum like this.
On Mon, Jul 17, 2023 at 3:22 PM Shaozhong SHI <shishaozhong@gmail.com> wrote:
On Monday, 17 July 2023, Greg Sabino Mullane <htamfids@gmail.com> wrote:What exact problem are you trying to solve? Recursive CTEs return one row per internal invocation, so they already return a "set" of results, but you could use arrays or json if you wanted to pack in extra information per returned row.On Sun, Jul 16, 2023 at 6:41 AM Shaozhong SHI <shishaozhong@gmail.com> wrote:Has anyone come across multiple sets of results with recursive query?How to handle it？Surely， there must be possible to find all route paths.Regards, David
On Monday, 17 July 2023, Erik Brandsberg <erik@heimdalldata.com> wrote:
A quick google provides content that may help: https://www.sisense.com/blog/postgres-recursive- cte/ The issue is that you aren't asking a specific question with a well defined answer. Provide examples of your data and what you are trying to achieve for the best results in a forum like this.On Mon, Jul 17, 2023 at 3:22 PM Shaozhong SHI <shishaozhong@gmail.com> wrote:
On Monday, 17 July 2023, Greg Sabino Mullane <htamfids@gmail.com> wrote:What exact problem are you trying to solve? Recursive CTEs return one row per internal invocation, so they already return a "set" of results, but you could use arrays or json if you wanted to pack in extra information per returned row.On Sun, Jul 16, 2023 at 6:41 AM Shaozhong SHI <shishaozhong@gmail.com> wrote:Has anyone come across multiple sets of results with recursive query?How to handle it？Surely， there must be possible to find all route paths.Regards, David
This one falls short of explaining possible other routes in network.
Regards, David