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-rw-r--r--guides/source/migrations.md2
1 files changed, 2 insertions, 0 deletions
diff --git a/guides/source/migrations.md b/guides/source/migrations.md
index 9568bfcdb8..ef95a28564 100644
--- a/guides/source/migrations.md
+++ b/guides/source/migrations.md
@@ -305,6 +305,8 @@ braces. You can use the following modifiers:
* `null` Allows or disallows `NULL` values in the column.
* `default` Allows to set a default value on the column. NOTE: If using a dynamic value (such as date), the default will only be calculated the first time (e.g. on the date the migration is applied.)
+NOTE: `null` and `default` cannot be specified via command line.
+
For instance, running:
```bash