Add in a random element as well as the hash of the SQL of the test

Add in a random element because sometimes two tests can be completely identical as the unique work of the test is done in the jinja template itself before compilation.

See https://github.com/calogica/dbt-expectations/blob/main/macros/schema_tests/table_shape/expect_table_column_count_to_equal_other_table.sql

Author: Benjamin-Knight

dbt/include/sqlserver/macros/materializations/tests.sql

@@ -8,7 +8,7 @@
   END
 
   {% set testview %}
-    [{{ target.schema }}.testview_{{ local_md5(main_sql) }}]
+    [{{ target.schema }}.testview_{{ local_md5(main_sql) }}_{{ range(1300, 19000) | random }}]
   {% endset %}
 
   {% set sql = main_sql.replace("'", "''")%}