Patch to change analysis_description.display_label to "NOT NULL".

sql/patch_54_55_g.sql

+# patch_54_55_g.sql
+#
+# title: Change analysis_description.display_label to "NOT NULL".
+#
+# description:
+# Display labels are generally supposed to be non-NULL and non-empty.
+# The display_labelfield in the analysis_description table allows for
+# NULLs.  This patch fixes this.
+
+ALTER TABLE analysis_description
+  MODIFY COLUMN display_label VARCHAR(255) NOT NULL;
+
+# patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+VALUES (NULL, 'patch',
+  'patch_54_55_g.sql|analysis_description.display_label_NOT_NULL');