H2 database. How to convert date to seconds in sql?

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Is there analog og the MySQL's time_to_sec() ?

I heed to perform query like the following on H2 database:

select * from order
join timmingSettings on order.timmingSettings = timmingSettings.id
where (order.time-timmingSettings.timeout) < current_timestamp

No, but it seems quite easy to add function to h2 if needed.

To convert a timestamp to seconds since epoch, compile and add a Java class to h2's classpath containing:

public class TimeFunc
{
  public static long getSeconds(java.sql.Timestamp ts)
  {
    return ts.getTime() / 1000;
  }
}

The function in the Java code can then be linked in h2 using CREATE ALIAS:

CREATE ALIAS TIME_SECS FOR "TimeFunc.getSeconds";

SELECT TIME_SECS(CURRENT_TIMESTAMP);

Produces:

TIME_SECS(CURRENT_TIMESTAMP())  
1255862217
(1 row, 0 ms)

Microsoft® Azure SQL Database, Built-In Intelligence that Learns App Patterns & Adapts to Maximize Performance. If specified field is a HOUR, MINUTE, SECOND, MILLISECOND, etc and value is a DATE value DATEADD returns combined TIMESTAMP. Fields DAY, MONTH, YEAR, WEEK , etc are not allowed for TIME values. Fields TIMEZONE_HOUR, TIMEZONE_MINUTE , and TIMEZONE_SECOND are only allowed for TIMESTAMP WITH TIME ZONE values.

In lieu of adding a function to H2, you can cast the date to a timsestamp and then use formatdatetime per http://www.h2database.com/html/functions.html. Alternatively, cast to string and use parsedatetime. Examples of both follow:

-- to convert using parsedatetime, done_on stores 
select parsedatetime(done_on, 'ssss', 'en', 'Europe/Dublin');
-- for this example, assume done_on stores a timestamp
-- to convert using formatdatetime
select formatdatetime(done_on, 'ssss', 'en', 'Europe/Dublin');

Valid timezones can be found in your /usr/share/zoneinfo directory and language codes are per the list at http://en.wikipedia.org/wiki/ISO_639-1 -- the ISO 639 part 1 standard.

H2 database. How to convert date to seconds in sql?, No, but it seems quite easy to add function to h2 if needed. To convert a timestamp to seconds since epoch, compile and add a Java class to  In this tutorial, you will learn how to convert a datetime to a DATE in SQL Server by using the CONVERT(), TRY_CONVERT(), and CAST() functions.

I think this is the most simple code.

select DATEDIFF('second',timestamp '1970-01-01 00:00:00' ,  CURRENT_TIMESTAMP())

Functions, The CAST operation to TIMESTAMP and TIMESTAMP WITH TIME ZONE data types uses If you deal with very old dates (before 1582-10-15) note that java.​sql. The date data type. The proleptic Gregorian calendar is used. See also date literal grammar. Mapped to java.sql.Date, with the time set to 00:00:00 (or to the next possible time if midnight doesn't exist for the given date and time zone due to a daylight saving change).

SELECT EXTRACT (EPOCH FROM <value>)

So

select * from order join timmingSettings on order.timmingSettings = timmingSettings.id where (extract(epoch from order.time)-extract(epoch from timmingSettings.timeout)) < extract(epoch from current_timestamp)

Data Types, * @param seconds The current timestamp in seconds. * @return a formatted date​/time String in the format "yyyy-MM-dd HH:mm:ss  SQL Server provides a number of options you can use to format a date/time string. One of the first considerations is the actual date/time needed. The most common is the current date/time using getdate (). This provides the current date and time according to the server providing the date and time. If a universal date/time is needed, then

h2database/FunctionsMySQL.java at master · h2database , CURRENT_TIMESTAMP result doesn't change under Transactions # If the SQL-session context statement timestamp is “not set”, then set it to  The CONVERT () function converts a value (of any type) into a specified datatype. Tip: Also look at the CAST () function. CONVERT ( data_type (length), expression, style) Parameter Values. Required. The datatype to convert expression to. Can be one of the following: bigint, int, smallint, tinyint, bit, decimal, numeric, money, smallmoney, float

h2database/h2database, If a database engine does not support Standard SQL, then the Returns a binary string by converting from the base64 <character value expr> CURRENT_TIMESTAMP returns a value of TIMESTAMP WITH TIME ZONE type  In my SQL Server database, I have a datetime column.. What is a good way to create a new column that represents the long value for the datetime column? The long would represent a number of seconds.

Chapter 10. Built In Functions, Examples of updating DATE, TIME, or TIMESTAMP SQL values with Java date, time, String input value, Target type in database, Value sent to table column, or exception Cast the input parameter as VARCHAR, and execute the DATE or  T-SQL contains functions to convert data types. We will use CAST and CONVERT to do a SQL convert date. Let’s start with CAST first: How to convert from varchar, nvarchar, char, nchar to sql date using CAST. The following example, will show how to convert characters to a datetime date type using the CAST function:

Comments
  • You can also inline it: CREATE ALIAS TIME_SECS AS 'long getSeconds(java.sql.Timestamp ts) { return ts.getTime() / 1000; }'.