trunc ( dat1e, [ format ] )da1te is the date to truncate.da1te是要截断的date format is the unit of measure to apply for truncating. If the format parameter is omitted, the trunc function will truncate the date to the day value, so that any hours, minutes, or seconds w...
select cardid, borrowdate from borrow where to_char(to_date(borrowdate,'yyyy-mm-dd'),'yyyy')='2014' and to_char(to_date(borrowdate,'yyyy-mm-dd'),'mm')>='02' and to_char(to_date(borrowdate,'yyyy-mm-dd'),'mm')<='04'; 方式二: select cardid, borrowdate from borrow where ...
trunc( date, [ format ] ) dateis the date to truncate. formatis the unit of measure to apply for truncating. If theformatparameter is omitted, thetruncfunction will truncate the date to the day value, so that any hours, minutes, or seconds will be truncated off. Below are the valid f...
truncateDate(Date date, String timeUnit) Date Truncates a Date based on a given time unit. The time unit used must be one of the following: • MILLISECONDS • SECONDS • MINUTES • HOURS • DAYS • WEEKS • MONTHS • YEARS For example, truncateDate((toDate("2015/03/31 ...
10、ckrowshare3SX(Row-X)行级排它锁, 在提交前不允许做DML操作In sert、Up date、Delete、 Lockrowshare4S(Share)共享锁Create in dex、Lockshare5SSX(S/Row-X)共享行级排 它锁Locksharerowexclusive6X(Exclusive)排它锁Altertable 、Drop able、 Dropindex、Truncatetable 、 Lockexclusive1.关于V$lock表和...
a byte array containing tokens from the parsed format Throws: java.sql.SQLException- if the format string can not be parsed. truncate publicDATEtruncate(java.lang.String prec) throws java.sql.SQLException compareTo public intcompareTo(DATEdate)...
ROUND and TRUNC Date Functions next lists theformat modelsyou can use with theROUND and TRUNC date functions and the units to which they round and truncate dates. The default model,'DD', returns the date rounded or truncated to the day with a time of midnight. ...
java.lang.String toString() For testing purposes only: converts this to a textual representation. DATE truncate(java.lang.String prec) Returns a date truncated to a specified precision.Methods inherited from class java.lang.Object clone, finalize, getClass, notify, notifyAll, wait, wait, waitFi...
(4) EnhancedTRUNCATE Functionality (5) Supportfor In-Place Upgrade of Clients (6) MaintenancePackage for Segment Creation on Demand (7) MaximumCPU Utilization Limit Resource Managerprovides a new directive called MAX_UTILIZATION_LIMIT that allows youto place a hard limit on the amount of CPU util...
对应DDL锁的是DDL语句,DDL语句全称数据定义语句(Data Define Language)。用于定义数据的结构或Schema,如:CREATE、ALTER、DROP、TRUNCATE、COMMENT、RENAME。当我们在执行某个存储过程、或者编译它的时候Oracle会自动给这个对象加上DDL锁,同时也会对这个存储过程所引用的对象加锁。