Change the names of some columns in identity_xref

sql/patch_52_53_c.sql

+# patch_52_53_c.sql
+#
+# title: identity xref rename
+#
+# description:
+# Rename some columns in identity xref to make them clearer
+#
+# query_identity    ->  xref_identity
+# target_identity   ->  ensembl_identity
+# hit_start         ->  xref_start
+# hit_end           ->  xref_end
+# translation_start ->  ensembl_start
+# translation_end   ->  ensembl_end
+
+ALTER TABLE identity_xref CHANGE COLUMN query_identity xref_identity INT(5);
+ALTER TABLE identity_xref CHANGE COLUMN target_identity ensembl_identity INT(5);
+ALTER TABLE identity_xref CHANGE COLUMN hit_start xref_start INT;
+ALTER TABLE identity_xref CHANGE COLUMN hit_end xref_end INT;
+ALTER TABLE identity_xref CHANGE COLUMN translation_start ensembl_start INT;
+ALTER TABLE identity_xref CHANGE COLUMN translation_end ensembl_end INT;
+
+# patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value) VALUES (NULL, 'patch', 'patch_52_53_c.sql|identity_xref_rename');
+
+