SQLSTATE=42723
DB21034E The command was processed as an SQL statement because it was not a
valid Command Line Processor command. During SQL processing it returned:
SQL0454N The signature provided in the definition for routine
"LY.DROP_COMMON_YYYYMMDD_TABLE" matches the signature of some other routine
that already exists in the schema or for the type. LINE NUMBER=52.
SQLSTATE=42723

[解决办法]
1.命令敲错了。
2.是在create时报的错吗？
matches the signature of some other routine that already exists in the schema or for the type
该模式下已经存在了同名的，删除后再建，或者换名字。