2011年2月16日
摘要：
ROUND and TRUNC Date FunctionsTable 7-13 lists the format models you can use with the ROUND 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.Table 7-13 Date Format Models f 阅读全文
