diff --git a/postgres/postgres.md b/postgres/postgres.md
index eb20069..47ca954 100644
--- a/postgres/postgres.md
+++ b/postgres/postgres.md
@@ -27,3 +27,6 @@ ORDER BY
 LIMIT 100;
 ```
 
+Alter Column
+==========================================================
+ALTER TABLE rlarp.pcore ALTER COLUMN pack SET DATA TYPE numeric USING pack::numeric