SYSDATE---10-DEC-14 在nmount装下也可以select sysdate 此时,来看一下DUAL的结构: SQL>select*fromx$dual; ADDR INDX INST_ID CON_ID D--- --- --- --- -000000000E07DD5C010X 在nomount状态时,DUAL实际上就是X$DUAL。 X$这类对象,在Oracle中属于直接定义在内存结构中的,在数据库实例启动的时候...
Click here to get information for Indexes in SQL… 7.How do you find current date in oracle? Explain with example. Answer: To fetch the current date in oracle there is on function named ‘Sysdate’. Example: select sysdate fron dual; 8.How to fetch the date in “YYYY-MM-DD” format...
194 1311180441 PL/SQL compilation elapsed time 0 194 751169994 Java execution elapsed time 0 194 1159091985 repeated bind elapsed time .0000001 194 2411117902 RMAN cpu time (backup/restore) 0 19 rows selected. Elapsed: 00:00:01.61 SQL> select (sysdate-logon_time)*24*60 minutes, username,machi...
select to_char(sysdate, 'DDD') from dual select to_char(to_date('2025-02-20','YYYY-MM-DD'), 'DDD') from dualDelphiusing DateUtils, SysUtils; DayOfTheYear(Date);Microsoft AccessDatePart("y", Now())Visual Basic (VB.NET)Dim dayOfYear As Integer = DateTime.Now.DayOfYear...
To create test tables (shown in the graphic above), execute the t1create.sql script. Because the script is pretty long, it contains PAUSE commands for the ease of your reading. Press RETURN to continue. SQL> @t1create.sql SQL> -- DISCLAIMER: SQL> -- This script is provided for educa...
PL/SQL is a strongly typed language. This means that before you can work with any kind of data structure, you must first declare it. And when you declare it, you specify its type and, optionally, an initial or default value. All declarations of these variables must be made in the decla...
194 1311180441 PL/SQL compilation elapsed time 0 194 751169994 Java execution elapsed time 0 194 1159091985 repeated bind elapsed time .0000001 194 2411117902 RMAN cpu time (backup/restore) 0 19 rows selected. Elapsed: 00:00:01.61 SQL> select (sysdate-logon_time)*24*60 minutes, username,machi...
times in a day it runs and how much total being read 1 2 3 4 5 6 7 8 9 10 11 12 13 SQL> l 1 with ds as ( 2 select min(snap_id) min_snap,max(snap_id) max_snap from 3 dba_hist_snapshot 4 where begin_interval_time between trunc(sysdate-1) and trunc(sysdate) ...
I think your are talking about select from dual in Oracle, correct?In Oracle dual is a table made to help programmer to show an expression result instead of table contents.For example, if you want to show time stamp, you can execute 'select sysdate from dual...
MS SQLSELECT DATEPART( wk, GETDATE() )OracleSELECT to_char(sysdate, 'IW') FROM DUAL IW: Week of year (1-52 or 1-53) based on the ISO-8601 standard. WW: Week of year (1-53) where week 1 starts on the first day of the year and continues to the seventh day of the year (...