From a87874237b2e05cb95a8d670870166db6a2badb3 Mon Sep 17 00:00:00 2001
From: Calum McGuicken <cjmcguicken@gmail.com>
Date: Sun, 9 Jul 2023 15:53:09 +0100
Subject: [PATCH] Added Jaro Winkler for SF

---
 macros/jaro_winkler.sql | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 macros/jaro_winkler.sql

diff --git a/macros/jaro_winkler.sql b/macros/jaro_winkler.sql
new file mode 100644
index 0000000..04dc094
--- /dev/null
+++ b/macros/jaro_winkler.sql
@@ -0,0 +1,23 @@
+{% macro jaro_winkler(str1, str2) %}
+    -- Check inputs are not None or empty
+    -- Max can be empty
+    {% if str1 is none or str2 is none or str1 == "" or str2 == ""%}
+        {{ exceptions.raise_compiler_error("Both input strings must contain text.") }}
+    {% endif %}
+    -- Use Dispatch to handle nuances in syntax across DWs
+    {{ return(adapter.dispatch('jaro_winkler', 'fuzzy_text')(str1, str2)) }}
+{% endmacro %}
+
+-- For non-supported adapters
+{% macro default__jaro_winkler() %}
+    {{ exceptions.raise_compiler_error("Jaccard index is not yet implemented for this adapter. Currently it is only available for Snowflake and BigQuery. Please raise an issue on the Github repo to request expanding coverage.") }}
+{% endmacro %}
+
+{% macro snowflake__jaro_winkler(str1, str2) %}
+    -- Built-in support for Snowflake
+    JAROWINKLER_SIMILARITY({{str1}}, {{str2}})
+{% endmacro %}
+
+-- {% macro bigquery__jaro_winkler(str1, str2) %}
+-- -- TODO
+-- {% endmacro %}
\ No newline at end of file