timestamp

问题 I know that FTP does not support transferring and retaining file date/time stamps Wondering if anyone has any ideas/scripts (Shell/perl) that would retain a transfered file's timestamp after a put operation? 回答1: One option is rcp -p . I'm sure some equivalent exists for more secure scp as well. As noted by Autocracy, if you can, just tar/zip/otherwise archive the file before transferring and revert back. Unfortunately this doesn't always work - say if you don't have control/acces to the file

问题 I'm trying to combine range. WITH a AS ( select '2017-09-16 07:12:57' as begat,'2017-09-16 11:30:22' as endat union select '2017-09-18 17:05:21' ,'2017-09-19 13:18:01' union select '2017-09-19 15:34:40' ,'2017-09-22 13:29:37' union select '2017-09-22 12:24:16' ,'2017-09-22 13:18:29' union select '2017-09-28 09:48:54' ,'2017-09-28 13:39:13' union select '2017-09-20 13:52:43' ,'2017-09-20 14:14:43' ), b AS ( SELECT *, lag(endat) OVER (ORDER BY begat) < begat OR NULL AS step FROM a ) , c AS (

问题 alter table `quote` modify column `timestamp` DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL What's wrong with the above mysql query? I am trying to change my timestamp column to default and update with the current timestamp. #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL' at line 1 回答1: After MODIFY COLUMN col_name the

问题 I use the following SQL command to create a products table on an Android client. CREATE TABLE IF NOT EXISTS 'products' ( '_id' INTEGER PRIMARY KEY AUTOINCREMENT, 'name' TEXT, 'serverId' INTEGER, 'modifiedAt' TIMESTAMP DEFAULT CURRENT_TIMESTAMP, UNIQUE ( 'serverId' ) ON CONFLICT REPLACE ); When I load data from a server and insert it into the local database, I use the following commands in the content provider to either update a row or insert new values. public int bulkInsert(Uri uri,

问题 I use the following SQL command to create a products table on an Android client. CREATE TABLE IF NOT EXISTS 'products' ( '_id' INTEGER PRIMARY KEY AUTOINCREMENT, 'name' TEXT, 'serverId' INTEGER, 'modifiedAt' TIMESTAMP DEFAULT CURRENT_TIMESTAMP, UNIQUE ( 'serverId' ) ON CONFLICT REPLACE ); When I load data from a server and insert it into the local database, I use the following commands in the content provider to either update a row or insert new values. public int bulkInsert(Uri uri,

问题 Related to my prior question about having a sequence without interim holes (a guarantee that the numbers that are visible to readers are always incrementing) enter link description here I'd like to ask if a solution I devised makes sense. I created a table with a rowversion column. If I understand this correctly, SQL Server guarantees that the values will be always incrementing. Because this is just a bunch of bytes, queries like WHERE RowVer > 1567 would requires a cast and hence would cause

问题 Using mysql Ver 14.12 Distrib 5.0.45, for redhat-linux-gnu (i686) using readline 5.0 I have a table defined like this: +-----------------------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-----------------------+--------------+------+-----+---------+-------+ | id | bigint(20) | NO | PRI | | | | user_id | bigint(20) | NO | MUL | | | | directory_id | bigint(20) | NO | MUL | | | | attribute_name | varchar(255) | NO | | | | | attribute_value |

问题 I need help regarding generating dates and days of the last seven to ten days with respect to today. How an accurate timestamp can be created which can take care of week, month and year change ? 回答1: Easiest way would be to get a timestamp that corresponds to today, using the time() function ; and 7 times remove 1 day to that timestamp, each echoing the date that corresponds to that timestamp : $timestamp = time(); for ($i = 0 ; $i < 7 ; $i++) { echo date('Y-m-d', $timestamp) . '<br />';

问题 I have a pagination function which pages through a time table and advances the dates on a weekly basis and displays the details relevant to the new dates. Whilst testing some new data I encountered a paging problem. In that it would not page passed 22/10/2012. Debugging the code I eventually found the source of the problem which is that incrementing the date stamp representing 22/10/2012 by 7 days returned (via strftime) a date of 28/10/2012 when obviously I was expecting a date of the 29/10

问题 I have the following MySQL timestamp: 2009-06-23 16:21:48 How can I convert it to a format like mktime()? 回答1: There is a MySQL function unix_timestamp. In your SQL query, instead of selecting the Datetime or Timestamp column directly, do this: SELECT unix_timestamp(MyDatetimeColumn) FROM MyTable Alternatively, if you have the string already, you could use the PHP function strtotime(). 回答2: ok, I was wrestling with this for a week (longer but i took a break from it). I have two specific