interval1hour); —add1hourselectdate_add(@dt, interval1minute); —…selectdate_add(@dt, interval1second);selectdate_add(@dt, interval1microsecond);selectdate_add(@dt, interval1week);selectdate_add(@dt, interval1month);selectdate_add(@dt, interval1quarter);selectdate_add(@dt, interval1y...
1.6.2 Date Format Elements Oracle Database Lite date formats are listed in Table 1-6. Table 1-6 Oracle Database Lite Date Formats Element Description SCC or CC Century; "S" prefixes BC dates with "-". YYYY or SYYYY 4-digit year; "S" prefixes BC dates with "-". IYYY 4-...
pg_function_is_visible(function_oid) 该函数是否在搜索路径中可见 regprocedure pg_operator_is_visible(operator_oid) 该操作符是否在搜索路径中可见 regoperator pg_opclass_is_visible(opclass_oid) 该操作符表是否在搜索路径中可见 regclass pg_conversion_is_visible(conversion_oid) 转换是否在搜索路径中可见...
5. format_string / printf 格式化字符串:format_string(strfmt, obj, ...) -- returns a formatted string from printf-style format strings select format_string("Spark SQL %d %s", 100, "days"); 1. 2. 6. initcap / lower / upper initcap:将每个单词的首字母转为大写,其他字母小写。单词之间以...
https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_date-format ...
The following statement updatesHunold'shire date using theTO_DATEfunction with the format mask 'YYYY MM DD' to convert the character string '1998 05 20' to aDATEvalue: UPDATE employeesSET hire_date = TO_DATE('1998 05 20','YYYY MM DD')WHERE last_name = 'Hunold'; ...
date_format) http://dev.mysql./doc/mysql/endate-and-time-functions.html#function_date-format get_format() 例如get_format({date|time|datetime,{‘EUR’,’USA’,’JIS’,’ISO’,’INTERNAL’}) mysql> select date_format(now(),%a %Y-%m-%d %T'),date_format(now(),'%Y-%m-%d %r'...
SELECT DATEPART('yyyy',$HOROLOG) AS Year,DATEPART('q',$HOROLOG) AS Quarter 2022 1 下面的嵌入式SQL示例使用主机变量来提供DATEPART参数值: SET x="year" SET datein="2018-02-22" &sql(SELECT DATEPART(:x,:datein) INTO :partout) WRITE "the ",x," is ",partout 下面的示例返回Sample.Person...
time_format(time,format):将一个时间格式化成指定格式。 str_to_date(str,format):将日期字符串,格式化成指定格式。 timestampdiff(unit,start,end):计算两个日期之间间隔的具体时间,unit是单位: year:年。 quarter:季度。 month:月。 week:周。 day:天。 hour:小时。 minute:分钟。 second:秒数。 microsec...
SQL_FN_TSI_QUARTERSQL_FN_TSI_YEARAn FIPS Transitional level-conformant driver will always return a bitmask in which all of these bits are set. SQL_TIMEDATE_DIFF_INTERVALS 2.0 An SQLUINTEGER bitmask enumerating the timestamp intervals supported by the driver and associated data source for the ...