在SQL中,存储日期或时间戳的常见数据类型包括DATE(日期),TIME(时间),DATETIME(日期时间)和TIMESTAMP(时间戳)。使用Extract函数,可以从这些数据类型中提取年、月、日、小时、分钟、秒等部分,并进行进一步的操作。 下面是Extract函数的语法: ``` EXTRACT(part FROM source) ``` 其中,part是要提取的部分,可以是以下...
STICKER_EQUIPMENT_FAILURERATEAS电装标贴故障率FROMBRAIN.DM_EQUIPMENTUTILIZATION_TRENDWHEREEXTRACT(YEARFROMTO_DATE(STAT_TIME,'YYYYMM'))='2023' 这将返回一个名为year的新列,其中包含datetime列中每个日期值的年份部分。
SELECT EXTRACT(YEAR FROM datetime) AS year FROM mytable;SELECTDEBUG_EQUIPMENT_TREND AS 调试台设备利用率 ,SHAKING_EQUIPMENT_TREND AS 震动台设备设备利用率 ,STICKERS_EQUIPMENT_TREND AS 电装标贴设备利用率,DEBUG_EQUIPMENT_FAILURERATE AS 调试台故障率,SHAKING_EQUIPMENT_FAILURERATE AS 震动台故障率,STICKER_...
BigQueryaDb2 (LUW)bdMariaDBcdMySQLcdOracle DBePostgreSQLSQL ServerdSQLitedfgextract(… from <datetime>)extract(… from <interval>)cast(<timestamp> as date)cast(<timestamp> as time) No time zone fields • SECOND does not include fractions No time zone fields No time zone fields • ...
Extract date, time from a given datetime in Oracle The EXTRACT() function is used to extract the value of a specified datetime field from a datetime or interval expression. Uses of Oracle EXTRACT (datetime) Function: Extracting Year, Month, or Day from a Date:Retrieve the year, month, or...
Please note that we assume that expression is already in the correct data type (either DATE, DATETIME, or TIMESTAMP). In addition, in Oracle you will need to add "FROM DUAL" at the end of the statement. Example 1The SQL statement, ...
EXTRACT extracts and returns the value of a specified datetime field from a datetime or interval expression. EXTRACT( { YEAR | MONTH | DAY | HOUR | MINUTE | SECOND | TIMEZONE_HOUR | TIMEZONE_MINUTE | TIMEZONE_REGION | TIMEZONE_ABBR ...
SQL 型 V4.0.0 参考指南 SQL 语法 普通租户(Oracle 模式) 函数 单行函数 时间日期函数 EXTRACT(datetime) 更新时间:2024-10-22 23:00:00 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...
Hello, Let's say my application must support multiple sql database providers and I have a table with stored timestamps and I would like to create reports with information grouped by day/month/year, in an SQL dialect-independent fashion. ...
SYS_EXTRACT_UTC从带时区偏移量或时区地区名的datetime值中提取UTC(协调世界时-以前的格林威治标准时间),如果没有指定时区,则datetime将与会话时区相关联。 例子: SQL> select TIMESTAMP '2000-03-28 11:30:00.00' AT TIME ZONE 'America/Los_Angeles' from dual; TIMESTAMP'2000-03-2811:30:00.00'ATTIMEZONE...