diff --git a/conf/autoload_configs/lcr.conf.xml b/conf/autoload_configs/lcr.conf.xml
index ecf84bd5d3..8751573414 100644
--- a/conf/autoload_configs/lcr.conf.xml
+++ b/conf/autoload_configs/lcr.conf.xml
@@ -16,5 +16,45 @@
       <param name="id" value="2"/>
       <param name="order_by" value="reliability,quality"/>
     </profile>
+<!-- 
+  Some samples of how to do custom SQL:
+
+    =============================================================
+    PostgreSQL with contrib prefix module which supports fast
+    prefix queries.  Ideal option.
+    =============================================================
+    <profile name="pg_prefix">
+      <param name="custom_sql" value="
+SELECT l.digits, c.carrier_name, l.rate, cg.prefix AS gw_prefix, cg.suffix AS gw_suffix, l.lead_strip, l.trail_strip, l.prefix, l.suffix
+FROM lcr l JOIN carriers c ON l.carrier_id=c.id JOIN carrier_gateway cg ON c.id=cg.carrier_id WHERE c.enabled = '1' AND cg.enabled = '1' AND l.enabled = '1' AND digits_prefix @> '%q'
+AND CURRENT_TIMESTAMP BETWEEN date_start AND date_end
+ORDER BY digits DESC, random();
+      "/>
+    </profile>
+    =============================================================
+    PostgreSQL with contrib prefix module which supports fast
+    prefix queries.  Ideal option.  Alternate syntax which requies
+    a session but allows variable substitution.
+    =============================================================
+    <profile name="pg_prefix2">
+      <param name="custom_sql" value="
+SELECT l.digits, c.carrier_name, l.rate, cg.prefix AS gw_prefix, cg.suffix AS gw_suffix, l.lead_strip, l.trail_strip, l.prefix, l.suffix
+FROM lcr l JOIN carriers c ON l.carrier_id=c.id JOIN carrier_gateway cg ON c.id=cg.carrier_id WHERE c.enabled = '1' AND cg.enabled = '1' AND l.enabled = '1' AND digits_prefix @> '${lcr_query_digits}'
+AND CURRENT_TIMESTAMP BETWEEN date_start AND date_end
+ORDER BY digits DESC, random();
+      "/>
+    </profile>
+    =============================================================
+    Demonstrates use of computed inlist.
+    =============================================================
+    <profile name="inlist">
+      <param name="custom_sql" value="
+SELECT l.digits, c.carrier_name, l.rate, cg.prefix AS gw_prefix, cg.suffix AS gw_suffix, l.lead_strip, l.trail_strip, l.prefix, l.suffix
+FROM lcr l JOIN carriers c ON l.carrier_id=c.id JOIN carrier_gateway cg ON c.id=cg.carrier_id WHERE c.enabled = '1' AND cg.enabled = '1' AND l.enabled = '1' AND digits IN (${lcr_query_expanded_digits})
+AND CURRENT_TIMESTAMP BETWEEN date_start AND date_end
+ORDER BY digits DESC, random();
+      "/>
+    </profile>
+-->
   </profiles>
 </configuration>