select * from nls_database_parameters where parameter = 'NLS_DATE_FORMAT'; 修改默认的格式 alter session set nls_date_format='yyyy-mon-day hh24:mi:ss'; alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'; 客户端显示的格式:与windows注册表中的nls_date_format 设置有关 客户端的注...
然后可以通过alter修改参数的值 若仅对当前会话生效:alter session set NLS_DATE_FORMAT='yyyy-mm-dd'; 若对全局生效:alter systemset NLS_DATE_FORMAT='yyyy-mm-dd'; 比较运算 赋值使用'=' BETWEEN AND IN LIKE 在模糊查询中,可以使用ESCAPE标识符选择‘%’和‘_’符号 若查询条件中有下划线作,则使用转义...
ALTER DATABASE SET NLS_DATE_FORMAT = 'format'; format是目标日期格式模型。 我们想要将数据库级别的日期格式设置为’YYYYMMDD’,可以使用以下SQL语句: ALTER DATABASE SET NLS_DATE_FORMAT = 'YYYYMMDD'; 需要注意的是,全局日期格式设置需要具有ALTER ANY DATABASE权限,全局日期格式设置会影响整个数据库,因此在设...
首先查询日期格式的设定: select 'DATABASE', value from nls_database_parameters where parameter = 'NLS_DATE_FORMAT' union select 'INSTANCE', value from nls_instance_parameters where parameter = 'NLS_DATE_FORMAT' union select 'SESSION', value from nls_session_parameters where parameter = 'NLS_DA...
1. Session NLS_DATE_FORMAT (via ALTER SESSION command) 2. Client side NLS_DATE_FORMAT (from client environment variables/registry settings) 3. Instance NLS_DATE_FORMAT (from init.ora file) 4. Database NLS_DATE_FORMAT Session NLS_DATE_FORMAT is set to client side NLS_DATE_FORMAT (explicit...
As of Oracle Database 10g Release 2 (10.2), replaced by OraSimpleDateFormat.OraSimpleDateFormat(String, Locale) Constructs an OraSimpleDateFormat object that uses the given format pattern for the default locale. Parameters: pattern - the given format pattern Throws: ParseException - if the form...
1. Session NLS_DATE_FORMAT (via ALTER SESSION command) 2. Client side NLS_DATE_FORMAT (from client environment variables/registry settings) 3. Instance NLS_DATE_FORMAT (from init.ora file) 4. Database NLS_DATE_FORMAT Session NLS_DATE_FORMAT is set to client side NLS_DATE_FORMAT (explicit...
nls_date_format string yyyy-mm-dd hh24:mi:ss nls_language string SIMPLIFIED CHINESE 一、 日期及时间一 格式串 说明及示例 --- --- -/,.;: 指定返回字串分隔符 例如: SQL> select to_char(sysdate,¨yyyy/mm/dd¨) from dual; TO_CHAR(SYSDATE,¨YYYY/MM/...
nls_date_format string yyyy-mm-dd hh24:mi:ss nls_language string SIMPLIFIED CHINESE 一、 日期及时间 格式串 说明及示例 --- --- -/,.;: 指定返回字串分隔符 例如: SQL> select to_char(sysdate,¨yyyy/mm/dd¨) from dual; TO_CHAR(SYSDATE,¨YYYY/MM/...
static intBDT Bad date format static intBHR Bad hour: above range static intBHRL Bad hour: below range static intBMN Bad minute: above range static intBMNL Bad minute: below range static intBMO Bad month: above range static intBMOL Bad month: below range static intBSC Bad sec...