使用ALTER PROCEDURE命令可以在空间数据库中修改已存在的用户存储过程。其语法格式为:ALTER PROC [EDURE] procedure_name [; number] [{@parameter data_type} [VARYING] [= default] [OUTPUT], ...n] [WITH {RECOMPILE | ENCRYPTION | RECOMPILE, ENCRYPTION}] [FOR REPLICATION] AS sql_statements