diff --git a/application.example.yaml b/application.example.yaml
index 87180c6..29be850 100644
--- a/application.example.yaml
+++ b/application.example.yaml
@@ -258,10 +258,32 @@ key.path: '/path/to/sign.key'
 #sql.connection: '/var/lib/matrix-synapse/homeserver.db'
 
 
-# See ldap.attribute.uid.type for more info on possible values
+#
+# Example configuration to integrate with synapse PostgreSQL DB
+#sql.enabled: true
+#sql.type: 'postgresql'
+#sql.connection: '//dnsOrIpToServer/dbName?user=synapseDbUser&password=synapseDbPassword'
+
+
+#
+# Configuration for an arbitrary server with arbitrary driver
+#
+# sql.identity.type possible values:
+# - uid       Returned value is the localpart of the Matrix ID
+# - mxid      Full Matrix ID, including domain
+#
+# sql.identity.query MUST contain a column with label 'uid'
+#
+# If you would like to overwrite the global lookup query for specific medium type,
+# add a config item (see below for example) in the following format
+# sql.identity.medium.theMediumIdYouWant: 'the query'
+
+#sql.enabled: true
+#sql.type: 'jdbcDriverName'
+#sql.connection: '//dnsOrIpToServer/dbName?user=synapseDbUser&password=synapseDbPassword'
 #sql.identity.type: 'mxid'
-#sql.identity.query: 'SELECT user_id AS uid FROM user_threepids WHERE medium = ? AND address = ?'
-#sql.identity.medium.email: "SELECT user_id AS uid FROM user_threepids WHERE medium = ? AND address = ?"
+#sql.identity.query: 'SELECT raw AS uid FROM table WHERE medium = ? AND address = ?'
+#sql.identity.medium.email: 'SELECT raw AS uid FROM emailTable WHERE address = ?'
 
 
 
diff --git a/build.gradle b/build.gradle
index f989cb4..0fd307c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -113,6 +113,9 @@ dependencies {
     // SQLite
     compile 'org.xerial:sqlite-jdbc:3.20.0'
 
+    // PostgreSQL
+    compile 'org.postgresql:postgresql:42.1.4'
+
     testCompile 'junit:junit:4.12'
     testCompile 'com.github.tomakehurst:wiremock:2.8.0'
 }