LOCALTIME localTime() 返回本地时区的当前 SQL 时间,返回类型为 TIME(0)。在流式计算模式下,对每条记录进行计算。但在批处理模式下,在查询开始时计算一次,并将相同的结果用于每行数据。 LOCALTIMESTAMP localTimestamp() 返回本地时区的当前 SQL 时间戳,返回类型为 TIMESTAMP(3)。在
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 14.2, “Loadable Function Reference”. Table 14.1 Built-In Functions and Operators NameDescriptionDeprecated ...
Return the current time in nanoseconds since the Epoch. >>> import time >>> time.time <built-in function time> >>> time.time() 1620908340.6910295 >>> time.time_ns() 1620908347245421300 >>> type(time.time()) <class 'float'> >>> type(time.time_ns()) <class 'int'> >>> time.tim...
错误信息 'builtin_function_or_method' object has no attribute 'strftime' 表明你尝试在一个内置函数或方法对象上调用 strftime,但这个对象并不支持这个方法。 确定引发错误的对象及其类型: 你需要检查你的代码,找到引发错误的对象。通常这个对象可能是一个被错误地赋值或引用的变量,或者是一个错误地从模块中导入...
erlangErlang 的内置函数(built-in function) ets内建的变量存储机制 file文件接口模块 filelib文件操作的一些常用工具函数 gb_trees通用平衡树(General Balanced Trees) gen_tcpTCP/IP 套接字接口 inetTCP/IP 协议处理函数 io标准输入输出(I/O)服务接口函数 lists列表处理函数 makeErlang 的代码编译函数库 maps映射...
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'localtime'" 2025-02-21 08:07:13 % $: ./wapptclsh script.tcl Hello World! Implement proc main in the app.tcl and ship it as a single file: $: echo 'proc main {} { puts "All in one" }' >> app.tcl $: make clean wapptclsh $: ./wapptclsh All in one Create your first...
Table 1Time functions Function Return Type Description DATE string DATE Parse the date string (yyyy-MM-dd) to a SQL date. TIME string TIME Parse the time string (HH:mm:ss) to the SQL time. TIMESTAMP string TIMESTAMP Convert the time string into timestamp. The time string format isyyyy...
CREATE TYPE foo_type AS (the_num INTEGER, the_text TEXT); CREATE OR REPLACE FUNCTION lotsa_md5 (INTEGER) RETURNS SETOF foo_type AS $$ use Digest::MD5 qw(md5_hex); my $file = '/usr/share/dict/words'; my $t = localtime; elog(NOTICE, "opening file $file at $t" ); open my...
LOCALTIME(), LOCALTIME NOW() のシノニムです LOCALTIMESTAMP, LOCALTIMESTAMP() NOW() のシノニムです LOCATE() 部分文字列が最初に出現する位置を返します LOG() 最初の引数の自然対数を返します LOG10() 引数の底 10 の対数を返します LOG2() 引数の底 2 の対数を返します ...