d1 日期型(date)/日期时间型(timestamp) c1 为字符型(参数) 返回值 字符 示例 (1)使用 extract 函数提取指定日期中的年月日时分秒,如下: SQL> select 2 extract(hour from timestamp '2022-05-07 23:24:30') 小时, 3 extract(minute from timestamp '2022-05-07 23
从timestamp中获取年月日时分秒 selectextract(yearfromsystimestamp)year,extract(monthfromsystimestamp)month,extract(dayfromsystimestamp)day,extract(minutefromsystimestamp) minute ,extract(secondfromsystimestamp) second ,extract(timezone_hourfromsystimestamp) th ,extract(timezone_minutefromsystimestamp) ...
SELECT EXTRACT(MONTH FROM SYSDATE) FROM DUAL; return Current Month SELECT EXTRACT(DAY FROM SYSDATE) FROM DUAL; return Current Day SELECT EXTRACT(HOUR FROM TIMESTAMP '2010-10-10 10:10:10') FROM DUAL; SELECT EXTRACT(MINUTE FROM TIMESTAMP '2010-10-10 10:10:10') FROM DUAL; 例子如下: SQL>...
DAYが要求された場合、exprはデータ型DATE、TIMESTAMP、TIMESTAMPWITHTIMEZONE、TIMESTAMPWITHLOCALTIMEZONEまたはINTERVALDAYTOSECONDの式に評価される必要があります。 HOUR、MINUTEまたはSECONDが要求された場合、exprはデータ型TIMESTAMP、TIMESTAMPWITHTIMEZONE、TIMESTAMPWITHLOCALTIMEZONEまたはINTERVALDAYTOSECOND...
SELECT EXTRACT(MONTH FROM SYSDATE) FROM DUAL; //return Current Month SELECT EXTRACT(DAY FROM SYSDATE) FROM DUAL; //return Current Day SELECT EXTRACT(HOUR FROM SYSDATE) FROM DUAL;//Error SELECT EXTRACT(HOUR FROM TIMESTAMP '2005-10-10 10:10:10') FROM DUAL;// Correct SELECT ...
,extract(timezone_abbr from systimestamp) ta from dual获取两个日期之间的具体时间间隔 获取两个日期之间的具体时间间隔,extract函数是最好的选择select extract (day from dt2 - dt1) day, extract (hour from dt2 - dt1) hour, extract (minute from dt2 - dt1) minute, extract (second from dt2 - ...
20.11Code language:SQL (Structured Query Language)(sql) D) Extracting fields from TIMESTAMP values# You can extract YEAR, MONTH, DAY, HOUR, MINUTE, and SECOND from aTIMESTAMPvalue as shown in the following examples: Extracting years from a timestamp: ...
[sql] SELECT EXTRACT (HOUR FROM (CURRENT_TIMESTAMP – MAX (stuff))) FROM times; — stuff is a column in table times that contains a timestamp value — CURRENT_TIMESTAMP is an Oracle function (<a href="http://download.oracle.com/docs/cd/B14156_01/doc/B13812/html/sqfunc.htm#i100759...
SQL 语法 普通租户(Oracle 模式) 函数 单行函数 时间日期 EXTRACT(datetime) 更新时间:2023-12-11 17:35:37 描述 该函数是从指定的时间字段或表达式中抽取年、月、日、时、分、秒和时区等元素。 语法 EXTRACT({YEAR|MONTH|DAY|HOUR|MINUTE|SECOND|TIMEZONE_HOUR|TIMEZONE_MINUTE|TIMEZONE_REGION|TIMEZONE_ABBR...
oracle中的extract(hour from systimestamp) from dual;结果是? 和extract(hour from systimestamp) from dual ;的结果? 答案 应该是时区 东8区 返回 8 相关推荐 1 oracle中的extract(hour from systimestamp) from dual;结果是? 和extract(hour from systimestamp) from dual ;的结果? 反馈 收藏 ...