Add enum column examples (#444)

Closes #376

docs/README.md

@@ -741,6 +741,7 @@ Example **add column** migrations:
 * [17_add_rating_column.json](../examples/17_add_rating_column.json)
 * [26_add_column_with_check_constraint.json](../examples/26_add_column_with_check_constraint.json)
 * [30_add_column_simple_up.json](../examples/30_add_column_simple_up.json)
+* [41_add_enum_column.json](../examples/41_add_enum_column.json)
 
 ### Alter column
 

examples/.ledger

@@ -37,3 +37,5 @@
 37_create_partial_index.json
 38_create_hash_index_with_fillfactor.json
 39_add_column_with_multiple_pk_in_table.json
+40_create_enum_type.json
+41_add_enum_column.json

examples/40_create_enum_type.json

@@ -0,0 +1,10 @@
+{
+  "name": "40_create_enum_type",
+  "operations": [
+    {
+      "sql": {
+        "up": "CREATE TYPE fruit_size AS ENUM ('small', 'medium', 'large');"
+      }
+    }
+  ]
+}

examples/41_add_enum_column.json

@@ -0,0 +1,15 @@
+{
+  "name": "41_add_enum_column",
+  "operations": [
+    {
+      "add_column": {
+        "table": "fruits",
+        "column": {
+          "name": "size",
+          "type": "fruit_size",
+          "default": "'small'"
+        }
+      }
+    }
+  ]
+}