DapperLib / DapperLib/Dapper

Pass C# array to UDTF in Snowflake as an array

Open
#2,081 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
C#
Stars
18.4k
Forks
3.7k
Avg merge
5h 8m
Merged PRs (30d)
1

Description

I have a parameter in C#

var selectedUsersIds = new long[]{1,2,3};

which I want to pass to a UDTF in Snowflake:

CREATE OR REPLACE FUNCTION GetUserInfo  ( pselectedUsersIds ARRAY)
  RETURNS TABLE ( 
  "Username" VARCHAR(1000), 
  "Age" NUMBER(38,0))
...

My sql query reads

SELECT * FROM TABLE(GetUserInfo(:SelectedUsers))

When I pass it via a DynamicParameters object

 var dynamicParams = new DynamicParameters();
 dynamicParams.Add("SelectedUsers", selectedUsersIds, (DbType?)null);

I get an error from Snowflake, saying that

Invalid argument types for function 'GetUserInfo': ( ROW(NUMBER(10,0), ROW(NUMBER(10,0), NUMBER(10,0))))

Is there a way to pass the C# array as a Snowflake array?

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no repository files or tests. Start from the shown DynamicParameters.Add call and reproduce the GetUserInfo query with the long[] value; done means the array is passed as a Snowflake ARRAY instead of a row-shaped value.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, sql
Domain
database
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.