Add an index to the seq_region_id column in seq_region_synonym.

sql/patch_61_62_e.sql

+# patch_61_62_e.sql
+#
+# Title: Index for seq_region_synonym.seq_region_id
+#
+# Description:
+# Add an index to the seq_region_id column in seq_region_synonym
+
+CREATE INDEX seq_region_idx ON seq_region_synonym(seq_region_id);
+
+# Patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_61_62_e.sql|seq_region_synonym_seq_region_idx');