Questions tagged [datetime]

for questions specific to data types that contain both date and time parts.

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16k views

How to display the number of days elapsed between two dates denoted in columns-specifically those exceeding 30 days?

Perhaps I'm overthinking this Oracle SQL query, but I'm attempting to display the number of days elapsed between two column data-sets attributed as "order-date" and "ship-date", which will be ...
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1answer
91 views

Combine various temporal criteria to filter rows

I am trying to query a database table with some filters. I have a form through which a user will create query attributes: When user will click on search it will pass such values: {camera_id: "9879" ...
4
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1answer
2k views

Datetime as date only

I understand SQL Server 2005 doesn't support DATE and so casting a datetime as a date is not possible. What I want to do is list all records with a datetime within an entire day of the current week. ...
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3k views

date/time field value out of range: "21/1/2016" [duplicate]

My PostgreSQL database version is PostgreSQL 9.3.10 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit In both databases, datestyle is set to"ISO, DMY". ATTEMPT 1 ...
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1answer
3k views

SQL Server comparing dates algorithm

How is the comparison between dates (with times) actually implemented? Consider the following query for example: SELECT * FROM dbo.Table1 WHERE DateTimeValue >= '2016-01-01 00:00:000' AND ...
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1answer
272 views

Help with adding a time filter to Postgres query

I've asked this question over in SE GIS, but told it would be better suited to this SE, so here goes... I know Postgres is brilliant for grouping points based on their spatial values - that I can do -...
2
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1answer
51 views

Find Difference In Time

I am attempting to write a stored procedure to determine the difference in seconds between two times. If I were to hardcode the values I know I can use CAST(datediff(second, [start], [end])/3600.0 ...
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1answer
1k views

select rows older then column DATETIME - INT value of other column in single query

I have 2 columns in my table: (DATETIME)lastsendattempt (INT)sendgap I know I can select all rows that have a "lastsendattempt" DATETIME which is older then the current time. But, am I able to use ...
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1answer
2k views

SQL Server: How to add all dates of the month?

I need help. I am trying to add all dates for the month. I have this information: Month | Year ============= 1 | 2012 2 | 2012 3 | 2012 4 | 2012 I need to add all dates of the month (...
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1answer
2k views

How to make a unique datetime without seconds?

I need to build a table accepting one row for each minute. If I set the type of primary key to datetime, 60 records can be added for each minute. Is there any trick to design a table to keep 0000-00-...
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1answer
3k views

current_timestamp default column value working in Windows but not in Linux

This MySql query runs fine in Windows: CREATE TABLE `posts`.`table` ( `idTable` INT NOT NULL AUTO_INCREMENT, `Column1` DATETIME NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`idTable`)); In ...
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2answers
6k views

Is there a way to calculate yesterday / today of last month / year in SQL?

Is there a way to calculate today (and yesterday) of last month (and last year) in SQL? Assuming today is 26-May-2015 then how to find? Today of last year i.e. 26-May-2014? Today of last month i.e. ...
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1answer
955 views

How to get current time in Oracle, and use in interval partition?

I'm trying to create an interval partitioned table in Oracle where the first partition is bounded to a week from now, but I just can't seem to figure out the syntax. Here's what I have so far.. ...
7
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1answer
299 views

How to encode a known date but unknown year?

I am using a Postgres database, and have a table with a date-time field. For many records, we know the year but not the date. Sometimes we know the date but not the year. And other times we know the ...
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1answer
2k views

TSQL DateTime DataType - fractional seconds vs milliseconds

Wanting to get all records from a single day. So everything between 2013-03-05 00:00:00.000 and 2013-03-05 23:59:59.999. We're getting overlap at the backend with things that happened at 2013-03-06 00:...
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0answers
204 views

SQL Server : implicit calculation of precision/scale for datetime scalar

I'm working with an application that ( for whatever reason... ) is unable to pass datetime stamps into its SQL Server database. Where the application needs a datetime stamp, it will push the server ...
3
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1answer
962 views

Datetime Clustered Index Keeps getting fragmented

I have a large table (4 million Records) named CDR, which is used for storing CDRs (Call Detail Record)s from a Cisco router in a VoIP system, the table is constantly growing and will never have a ...
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2answers
3k views

Getting 30 minute slots between time

I have a Start Datetime and a End Datetime. Eg: 10:00 am - 12:00 pm I have to create 4 slots between the, each ranging for 30 minutes. Eg: 10:00 am-10:30 am 10:30 am-11:00 am 11:00 am-11:30 am ...
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3answers
647 views

Access (Jet) SQL: DateTime stamps in TableB flanking each DateTime stamp in TableA

First Words You can safely ignore the sections below (and including) JOINs: Starting Off if you just want to take a crack of the code. The background and results just serve as context. Please look at ...
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1answer
796 views

How to find the price based on the given range

Here i need to find the price of the qty based on which price range the qty lies. In the first date(2015/01/01) 5 quantities have been sold and we made entries from (1 to 5) ,On second day for 10 ...
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1answer
243 views

Search efficiency of datetime vs date + indexed smallint (PostgreSQL)

Context We are storing weather forecasts as multiband rasters (using Postgres with PostGIS). Each forecast is identified by its date and time (either 0:00, 6:00, or 12:00). We are looking at about 20 ...
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1answer
90 views

Last date SQL Server query required

Scenario: I am writing a cash management system and want to put some date columns for getting date info / history. Actually there are two columns for date in same table at this moment. Voucher Date ...
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1answer
850 views

Filter column by records matching a timezone in Postgres

I want to check whether any rows in my column (TIMESTAMP WITH TIME ZONE) are not stored using UTC. Is there a query I can write to match values that are stored with a TZ offset of 1 or 8 or 11 or (not ...
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0answers
385 views

mysql datetime timezone +0000

I've got a Twitter database and some columns in multiple tables are time-stamps like: Tue Sep 09 23:48:37 +0000 2014 These columns are TEXT so I want to convert them. I read Date and Time Types, ...
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2answers
8k views

Default value for "microtime" column in MySQL

My interest is to store the time with FSP of 6. As I've read, this cannot be achieved with TIMESTAMP or DATETIME data types. So, I have a double field to store the output of the microtime function. ...
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1answer
134 views

Time difference

I was working with SQL and I found something unusual. I was calculating the time difference between two datetimes in h:m:s format using SQL select time_format(timediff( '2015-09-12 18:47:15', ...
2
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1answer
966 views

How to add DATETIME value for session user

I am maintaining two tables: Employee table consists of username and password(for logging in) log table consists of login and logout time for the session user With the click of a button, I should be ...
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2answers
255 views

Group by month in result columns?

I'm using this DBMS: Caché I've never used a pivot table in SQL and I'm not even good at it in Excel, but I assume that's what I need. Given the following sample data: ID Name Result Date ...
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0answers
3k views

Select records where difference between datetime column1 and column 2 is greater than X amount of time

As the title indicates, I'm trying to return records where the datetime difference between two datetime columns is greater than X amount of time. I'm having trouble wrapping my head around this ...
2
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2answers
8k views

updating the entire column with datetime values based on other values in the row

I have a very large table [server].[dbo].[MyTable] where I need the SQL statement to fill the column 'ToDateTime' (currently full of NULLs) according to the following logic: Only add a value to '...
2
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1answer
128 views

How to make a query using "where MONTH(datetime)" faster?

I already tried to add an index on the datetime column, but the result is still unacceptably slow. SELECT s.id, s.player, COUNT(case when dg.winner = 1 AND dp.colour <= 5 then 1 when dg.winner = 2 ...
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1answer
980 views

MySQL 5.6 Datetime Range

According to MySQL 5.6 doc, the supported range for datetime data type is '1000-01-01 00:00:00' to '9999-12-31 23:59:59'. But when I tried inserting values that are earlier than '1000-01-01 00:00:00', ...
2
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1answer
472 views

Intervals query of huge data

My question is more or less theoretical - what is the best approch to get query data by intervals. The situation I have a system that manage counters (thousands of counters - counts consumption of ...
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1answer
10k views

how to extract current year and combine with specific month and date as a date

I have to get the current year with June the 16th as a date. For example, if I run the query now I want to get 2015-06-16. I tried the following: CONVERT(DATETIME,cast( (cast(YEAR(GetDate()) AS ...
2
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1answer
3k views

How to remove leading zero from date [closed]

I have a query in which i have used the following date_add(DATE_FORMAT(ss.week_startdate,'%y-%m-%d'),INTERVAL (tt.day_id- 1 )DAY) as date Datatype of the field is datetime and the result date is ...
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1answer
2k views

Create a default value for session valid_until MySQL

Server version: 5.6.22 Homebrew The table: CREATE TABLE `sessions` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `user_id` bigint(20) unsigned NOT NULL, `date_created` datetime ...
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1answer
30 views

Building test site, update dates (back date records)

I have 3 tables that all connect and I need to back date them in an MS SQL 2008 setting. I was thinking about how to do this and not sure if I am on the correct path. The big problem I have is I have ...
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1answer
3k views

Get currentmilliseconds in postgres

I'm working on timestamp/datetime in my application. I'm using postgres db. What is the way to get current milliseconds (something like 1412706599000) in postgres?
2
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1answer
443 views

SQL DATEDIFF coercion differences between databases on same SQL instance?

I have a data coercion mystery. I am seeing two different behaviors from DATEDIFF for the same query, and I cannot understand why. This is an extract of the relevant part of the query in question, ...
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1answer
2k views

Format timezone to +-#### instead of +-##

I am curious if there is a way to configure Postgres (9.1+) to format the TZ part of a "timestamp with time zone" as +-####, just like PHP's date.format method does using "O". PHP Docs: O | ...
6
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1answer
11k views

How to check the timezone for a given datetime?

A database / table I'm working it saves all its date values as datetime (without a timezone). How can I find out which timezone that date was in? For instance, the Central European Summer Time (+02) ...
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1answer
697 views

Converting date string to SQL DATETIME - hopefully without a udf

I am taking an Excel file that has dates in different formats but one of these formats is giving me some grief when I try converting it or casting it to a SQL DATETIME. For example: Thu Oct 16 13:40:...
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1answer
2k views

Cannot SUM datetime field in SQL Server migrated from Access

I am new here and am new to SQL Server (Express). I used the SSMA tool and it converted Access date/time fields to datatime2. The data contains duration data so there is no need for a date. I want to ...
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2answers
708 views

SAP Sybase IQ 16: Missing DATEROUND()

I'm just wondering what might can be wrong I was trying to round a date by its quarter. Beside some hacks I found the function DATEROUND, which I was thinking of based of documentation is able to do ...
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0answers
455 views

Combining date and date/time ranges in PostgreSQL

In a PostgreSQL table, I'd like to store events which have a range telling when the event is happening. However, some events span whole days (i.e., the user does not care about time), while others ...
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1answer
1k views

Unable to update or insert values table with DateTime column defaulted to GETDATE

I have atlered table by adding Datetime column. This column is not null and also default value from GETDATE(). ALTER TABLE myTable ADD myDateColun DATETIME NOT NULL DEFAULT (GETDATE()) I'm trying ...
2
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1answer
21k views

selecting records that are 3 days from expiring datetime

I have a table that contains a datetime timestamp. What I am looking for is to select records that are exactly 3 days from the 30 day expiration based on the datetime timestamp. Here is what I have ...
3
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2answers
7k views

Converting string to date with timezone adjustment

I am attempting to convert stirngs to dates in mysql Thu Oct 23 16:46:47 2014 +02:00 Im unsure how to handle the +02:00, The rest is simple enough update logs set date = str_to_date(date_raw, '%a ...
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1answer
494 views

DateTime returning with AM/PM

I have a SQL Server database (2008R2) running on a Windows 2003 box. I'm connecting to it using another Win2003 box. When I select a datetime value from the database, I'm getting it back in this ...
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1answer
157 views

MySQL optimize range duplicate query

I need to eliminate duplicates from a time sheet. I found this solution and have adapted it for my own needs: DROP TABLE IF EXISTS `activity`; CREATE TABLE IF NOT EXISTS `activity` ( `id` int(11) ...

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