Disabled prepared statements in test

Some tests may test migrations and change the types of columns. If this happens, Rails may cache a statement that will cause PostgreSQL to fail with the message, "cached plan must not change result type": https://github.com/rails/rails/issues/12330 This happened in https://gitlab.com/gitlab-org/gitlab-ee/issues/2890#note_34636077.

Disabled prepared statements in test
f92a12c2 · Stan Hu · 4daa6da5 · f92a12c2 · f92a12c2
Commit f92a12c2 authored Jul 10, 2017 by Stan Hu
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database.yml.mysql config/database.yml.mysql +1 -0

database.yml.postgresql config/database.yml.postgresql +1 -0

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--- a/config/database.yml.mysql
+++ b/config/database.yml.mysql
@@ -42,3 +42,4 @@ test: &test
  password:
  # host: localhost
  # socket: /tmp/mysql.sock
+  prepared_statements: false
--- a/config/database.yml.postgresql
+++ b/config/database.yml.postgresql
@@ -46,3 +46,4 @@ test: &test
  username: postgres
  password:
  # host: localhost
+  prepared_statements: false