s/meta/meta_coord/g

sql/patch_50_51_c.sql

 # patch_50_51_c.sql
 #
-# title: meta index
+# title: meta_coord index
 #
 # description:
-# Swap order of columns in meta table index for better performance.
+# Swap order of columns in meta_coord table index for better performance.
 
 DROP INDEX table_name ON meta_coord;
 
 CREATE UNIQUE INDEX cs_table_name_idx ON meta_coord (coord_system_id, table_name);
 
 # patch identifier
-INSERT INTO meta (meta_key, meta_value) VALUES ('patch', 'patch_50_51_c.sql|meta_index');
+INSERT INTO meta (meta_key, meta_value) VALUES ('patch', 'patch_50_51_c.sql|meta_coord_index');