sysdate | 易学教程

VB.net SQL statement to query 1 yr old Timestamp

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问题 I want to display in my gridview all data whose timestamp is not older than 1 years from current date. My timestamp is formatted like so: 20110125-071830 or yyyymmdd-hhmmss I have tried to reference : Retrieve rows less than a day old: Select * from table_name WHERE DATE(timestampVal) > DATE(NOW() - INTERVAL 1 YEAR); but got missing expression flag I also tried various others; however, my timestampVal is different simply by how it is formatted. Like for example: https://community.oracle.com

to_date function with sysdate

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问题 select TO_CHAR(to_date(sysdate, 'DD-MON-YYYY'), 'DAY') FROM DUAL; When I run this query the output was : SUNDAY. But we know today is Tuesday(1-1-2013). And then changed the query as select TO_CHAR(to_date('01-JAN-2013', 'DD-MON-YYYY'), 'DAY') FROM DUAL; answer was :TUESDAY. then Changed query as select TO_CHAR(to_date(sysdate+1, 'DD-MON-YYYY'), 'DAY') FROM DUAL; answer is :MONDAY. When I using the sysdate why it is show SUNDAY as output? I am new in oracle db. Please help me. 回答1: use this:

How can I use DB side default value while use Hibernate save?

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I have a column in DB with default value as sysdate . I'm looking for a way to get that default value inserted while I'm not giving anything to corresponding property on app side. By the way, I'm using annotation-based configuration. Any advice? Xavi López The reason why the date column gets a null value when inserting, even though it is defined as default SYSDATE dbms-side, is that the default value for a column is only used if the column is not given a value in the query. That means it must not appear in the INSERT INTO sentence, even if it has been given null . If you want to use the

Check if current date is between two dates Oracle SQL

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I would like to select 1 if current date falls between 2 dates through Oracle SQL. I wrote an SQL after reading through other questions. https://stackoverflow.com/questions/2369222/oracle-date-between-query https://stackoverflow.com/questions/2399753/select-from-table-by-knowing-only-date-without-time-oracle But it returned only null. sysdate is the current date that is 01/05/2014 in date format DD/MM/YYYY . The SQL I wrote is: select 1 from dual WHERE to_date(sysdate,'DD/MM/YYYY') BETWEEN TO_DATE('28/02/2014', 'DD/MM/YYYY') AND TO_DATE('20/06/2014', 'DD/MM/YYYY'); and select 1 from dual WHERE

How can I use DB side default value while use Hibernate save?

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问题 I have a column in DB with default value as sysdate . I'm looking for a way to get that default value inserted while I'm not giving anything to corresponding property on app side. By the way, I'm using annotation-based configuration. Any advice? 回答1: The reason why the date column gets a null value when inserting, even though it is defined as default SYSDATE dbms-side, is that the default value for a column is only used if the column is not given a value in the query. That means it must not