PATCH: lower key in stu_contact_assoc (#109)

* need to lower the string before keying

* Update CHANGELOG.md

* Update dbt_project.yml

Author: rlittle08

CHANGELOG.md

@@ -3,6 +3,10 @@
 ## Under the hood
 ## Fixes
 
+# edu_edfi_source v0.4.1
+## Fixes
+- Fix surrogate key creation for `stg_ef3__student_contact_associations` to properly hanlde lowering of alphanumeric columns that are part of natural keys
+
 # edu_edfi_source v0.4.0
 ## New features
 - Add `stg_ef3__stu_ed_org__cohort_years` tracking student cohort designations (flattens Ed-Fi collection `cohort_years` for easier downstream use)

dbt_project.yml

@@ -1,7 +1,7 @@
 config-version: 2
 
 name: 'edu_edfi_source'
-version: '0.4.0'
+version: '0.4.1'
 require-dbt-version: [">=1.0.0", "<2.0.0"]
 
 # This setting configures which "profile" dbt uses for this project.

models/staging/edfi_3/stage/stg_ef3__student_contact_associations.sql

@@ -22,7 +22,7 @@ keyed as (
     select 
         {{ gen_skey('k_student') }},
         -- we can't use the gen_skey macro here because we're bringing in the deprecated parents endpoint data, which contains a parentReference that won't work
-        {{ dbt_utils.generate_surrogate_key(['tenant_code', 'contact_unique_id']) }} as k_contact,
+        {{ dbt_utils.generate_surrogate_key(['tenant_code', 'lower(contact_unique_id)']) }} as k_contact,
         {{ gen_skey('k_student_xyear') }},
         api_year as school_year,
         unioned.*