package main
import (
"fmt"
"time"
"github.com/xclpkg/utils"
"sort"
)
func main(){
t := time.Now();
//alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
//select to_date('2014-06-09 18:04:06','yyyy-MM-dd HH24:mi:ss') as dt from dual;
fmt.Println("\n演示时间 => ",utils.GetTmShortStr(t,"y-m-d H:i:s a"))
//返回当前是一年中的第几天
//select to_char(sysdate,'ddd'),sysdate from dual;
yd := t.YearDay();
fmt.Println("一年中的第几天: ",yd)
//一年中的第几周
year,week := t.ISOWeek()
fmt.Println("一年中的第几周: ",year," | ",week)
//当前是周几
//select to_char(sysdate,'day') from dual;
//select to_char(sysdate,'day','NLS_DATE_LANGUAGE = American') from dual;
fmt.Println("当前是周几: ",t.Weekday().String())
//字符串转成time.Time
//alter session set nls_date_format='yyyy-mm-dd hh:mi:ss';
//select to_date('14-06-09 6:04:06','yy-MM-dd hh:mi:ss') as dt from dual;
tt,er := time.Parse(utils.GoStdTime(),"2014-06-09 16:04:06")
if(er != nil){
fmt.Println("字符串转时间: parse error!")
}else{
fmt.Println("字符串转时间: ",tt.String())
}
fmt.Println("\n演示时间 => ",utils.GetTmStr(t,"y-m-d h:i:s"))
ta := t.AddDate(1,0,0)
fmt.Println("增加一年 => ",utils.GetTmStr(ta,"y-m-d"))
ta = t.AddDate(0,1,0)
fmt.Println("增加一月 => ",utils.GetTmStr(ta,"y-m-d"))
//select sysdate,sysdate + interval '1' day from dual;
ta = t.AddDate(0,0,1) //18
fmt.Println("增加一天 => ",utils.GetTmStr(ta,"y-m-d"))
durdm,_ := time.ParseDuration("432h")
ta = t.Add(durdm)
fmt.Println("增加18天(18*24=432h) => ",utils.GetTmStr(ta,"y-m-d"))
//select sysdate,sysdate - interval '7' hour from dual;
dur,_ := time.ParseDuration("-2h")
ta = t.Add(dur)
fmt.Println("减去二小时 => ",utils.GetTmStr(ta,"y-m-d h:i:s"))
//select sysdate,sysdate - interval '7' MINUTE from dual;
durmi,_ := time.ParseDuration("-7m")
ta = t.Add(durmi)
fmt.Println("减去7分钟 => ",utils.GetTmStr(ta,"y-m-d h:i:s"))
//select sysdate,sysdate - interval '10' second from dual;
durs,_ := time.ParseDuration("-10s")
ta = t.Add(durs)
fmt.Println("减去10秒 => ",utils.GetTmStr(ta,"y-m-d h:i:s"))
ttr,er := time.Parse(utils.GoStdTime(),"2014-06-09 16:58:06")
if(er != nil){
fmt.Println("字符串转时间: 转换失败!")
}else{
fmt.Println("字符串转时间: ",ttr.String())
}
//alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
//select trunc(to_date('2014-06-09 16:58:06','yyyy-mm-dd hh24:mi:ss'),'mi') as dt from dual;
// SQL => 2014-06-09 16:58:00
// Truncate => 2014-06-09 16:50:00
durtr,_ := time.ParseDuration("10m")
ta = ttr.Truncate(durtr)
fmt.Println("Truncate => ",utils.GetTmStr(ta,"y-m-d H:i:s"))
//select round(to_date('2014-06-09 16:58:06','yyyy-mm-dd hh24:mi:ss'),'mi') as dt from dual;
// SQL => 2014-06-09 16:58:00
// Round => 2014-06-09 17:00:00
ta = ttr.Round(durtr)
fmt.Println("Round => ",utils.GetTmStr(ta,"y-m-d H:i:s"))
//日期比较
tar1,_ := time.Parse(utils.GoStdTime(),"2014-06-09 19:38:36")
tar2,_ := time.Parse(utils.GoStdTime(),"2015-01-14 17:08:26")
if tar1.After(tar2) {
fmt.Println("tar1 > tar2")
}else if tar1.Before(tar2) {
fmt.Println("tar1 < tar2")
}else{
fmt.Println("tar1 = tar2")
}
tar3,_ := time.Parse(utils.GoStdTime(),"2000-07-19 15:58:16")
//日期列表中最晚日期
// select greatest('2014-06-09','2015-01-14','2000-07-19') from dual;
var arr utils.TimeSlice
arr = []time.Time{tar1,tar2,tar3}
temp := utils.Greatest(arr)
fmt.Println("日期列表中最晚日期 => ",utils.GetTmStr(temp,"y-m-d"))
//日期数组从早至晚排序
fmt.Println("\n日期数组从早至晚排序")
sort.Sort(arr)
for _,at := range arr {
fmt.Println("Sort => ",utils.GetTmStr(at,"y-m-d H:i:s"))
}
}
