diff --git a/sample_discovercard/definition.md b/sample_discovercard/definition.md
index 2a14112..d22ba71 100644
--- a/sample_discovercard/definition.md
+++ b/sample_discovercard/definition.md
@@ -91,6 +91,51 @@ screen builds json
         }
     }
 
+SQL
+---------------------------------------
+SELECT 
+    jsonb_pretty(r.x) 
+FROM
+    tps.srce_set(
+    'DCARD',
+    $$
+    {
+        "name": "DCARD",
+        "type": "csv",
+        "schema": [
+            {
+                "key": "Trans. Date",
+                "type": "date"
+            },
+            {
+                "key": "Post Date",
+                "type": "date"
+            },
+            {
+                "key": "Description",
+                "type": "text"
+            },
+            {
+                "key": "Amount",
+                "type": "numeric"
+            },
+            {
+                "key": "Category",
+                "type": "text"
+            }
+        ],
+        "unique_constraint": {
+            "type": "key",
+            "fields": [
+                "{Post Date}",
+                "{Trans. Date}",
+                "{Description}"
+            ]
+        }
+    }
+    $$
+) r(x)
+
 backend handles SQL
 -----------------------------------
 
diff --git a/sample_discovercard/mapping.md b/sample_discovercard/mapping.md
index 3322020..73f5f1f 100644
--- a/sample_discovercard/mapping.md
+++ b/sample_discovercard/mapping.md
@@ -77,6 +77,33 @@ map definition
         "description": "pull first 20 characters from description for mapping"
     }
 
+SQL
+---------------------------------------------
+INSERT INTO
+    tps.map_rm
+SELECT
+    'DCARD',
+    'First 20',
+    $$    {
+        "defn": [
+            {
+                "key": "{Description}",
+                "map": "y",
+                "flag": "g",
+                "field": "f20",
+                "regex": ".{1,20}",
+                "retain": "y"
+            }
+        ],
+        "name": "First 20",
+        "where": [
+            {"Category":"Restaurantes"},
+            {"Category":"Services"}
+        ],
+        "function": "extract",
+        "description": "pull first 20 characters from description for mapping"
+    } $$::jsonb,
+    1
 
 
 assign new key/values to the results of the regular expression, and then back to the underlying row it came from