看起来是 oracle 会把字符串前后的空格字段都去掉，
比如

SQL> SELECT to_date('  2020  ','SYYYY') FROM dual;
TO_DATE('2020','SYYYY')
-----------------------
2020/6/1

19Calert日志打印出来的添加分区信息的分区条件，也是有空格，为什么会这样？

TABLE SYS.WRP$_REPORTS: ADDED INTERVAL PARTITION SYS_P219 (3820) VALUES LESS THAN (TO_DATE(' 2020-06-17 01:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')) TABLE SYS.WRP$_REPORTS_DETAILS: ADDED INTERVAL PARTITION SYS_P220 (3820) VALUES LESS THAN (TO_DATE(’ 2020-06-17 01:00:00’, ‘SYYYY-MM-DD HH24:MI:SS’, ‘NLS_CALENDAR=GREGORIAN’))
TABLE SYS.WRP$_REPORTS_TIME_BANDS: ADDED INTERVAL PARTITION SYS_P223 (3819) VALUES LESS THAN (TO_DATE(’ 2020-06-16 01:00:00’, ‘SYYYY-MM-DD HH24:MI:SS’, ‘NLS_CALENDAR=GREGORIAN’))