Questions tagged [datetime]

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

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3answers
35 views

Select youngest record

I have a MariaDB table "mdata" with the following schema: +-----+-----------+---------------------+------+ | id | room | date | temp | +------+-----------+---------------------...
2
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1answer
30 views

How to combine date and time with a string value in column created by Case in SQL Query

I am in the process of creating a query for an SSRS report that will show a column that has DATETIME values. The column can have NULL values. In my query I would like to use a CASE expression. I ...
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1answer
27 views

Best way to put date range in a table in mySQL

I'm designing a system which is basically a booking engine. it uses separate table to store room data and separate table to store it's availability information (available date(s) ). I'm stuck in ...
15
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5answers
5k views

How to add 1 milliseconds to a datetime string?

Based on a select, I can return x rows like this: 1 2019-07-23 10:14:04.000 1 2019-07-23 10:14:11.000 2 2019-07-23 10:45:32.000 1 2019-07-23 10:45:33.000 We have all milliseconds with 0. Is ...
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0answers
6 views

Redshift/Athena: Most efficient way to cast timestamps of varying precision to date in query?

I'm receiving a stream of log files to an S3 bucket and querying this data through Amazon Athena (Redshift). Contained in the log files are timestamps with the seconds field having decimals to the ...
6
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1answer
379 views

SQL Server error 242 with ANSI datetime

I'm trying to debug a MS SQL Server error 242: The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value. The error is originated by this statement: ...
2
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0answers
44 views

What is the name of month 0?

MySQL permits you to store a zero value of '0000-00-00' as a “dummy date.”: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-types.html I'm currently inserting into this field using STR_TO_DATE(?...
0
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1answer
52 views

Row for each date, start and end

I have a table that has two columns, startDate and endDate. Each day has its own capacity. Between these dates, user can get from 1 to n items. I am going to get number of items remaining for each day ...
0
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1answer
17 views

How to summate weekly totals from a postgres date range type per user

I have the following table: Schedules +----+---------+------------+-------+--------------------------+ | id | user_id | project_id | hours | date_range | +----+---------+------------+---...
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0answers
21 views

Time wise user online count

I'm not a DB expert but i'm trying to get time wise user online count to show in a graph. I have manage to get online user count for current time but how to get for a time span ? i need each minute ...
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0answers
21 views

Selecting time_Stamp >= time('now') GROUP BY firstName RETURNS all first names and same time?

I am trying to select two columns from two different tables, where a value exists in both tables and the time in one table is >= now - 30 minutes. How ever it is returning all the firstnames and then ...
2
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1answer
786 views

Incorrect datetime value Mysql

Good morning. Mysql 5.7.25: insert into mytable values('2019-03-31 02:06:29') return error "#1292 Incorrect datetime value" but: insert into mytable values('2019-03-31 03:06:29') return no ...
4
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1answer
528 views

Check if two datetimes are between two others

Today I'm facing with problem, which I can't solve. I need to check if two datetimes (2019-04-08 13:30:00 - 2019-04-08 15:30:00 ) are between or overlap two others (2019-04-08 14:00:00 - 2019-04-08 ...
-1
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1answer
33 views

mysql_query expected [closed]

currently I'm getting the error stated above using thise code: $Tijd = date_create($_POST ["Tijd"]); $Tijd->format(\DateTime::ISO8601); $result = mysql_query ("SELECT Voorstellingsnummer FROM ...
1
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1answer
76 views

How to get all dates belonging to a timestamp range

I have a tsrange as input. For example: tsrange('2019-03-04 20:00'::timestamp, '2019-03-06 20:00'::timestamp) I want to generate all dates belonging to this range. I started with the following, ...
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1answer
98 views

Pass 'interval' value to date_trunc function in PostgreSQL procedure

I am fetching the "age" of two timestamp columns (End and Start) and further choosing it as to_char 'MM' format. So I have the difference of the months from two timestamp columns. The syntax in the ...
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1answer
107 views

Index Optimization for Datetime comparing day of week and hour

I have a table of sensor observations with obs_ts timestamp, sensor_id text, sensor_val int, and to fill in gaps with data we have models by day of week and hour of day: model_id int, hour_of_day int, ...
1
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1answer
43 views

Subtracting Days From Current Date

I know this is probably very basic, but I'm trying to create a calculated field that subtracts X number of from Current Date, based off of the value of another field: CASE WHEN DaysPD = 30 THEN 1 ...
1
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1answer
27 views

calculate days spent of all visitors from encounters

I have an encounters table CREATE TABLE visitors( id serial PRIMARY KEY, start_date TIMESTAMP NOT NULL, -- visitor_id bigint NOT NULL -- skip for now, end_date TIMESTAMP ); (end_date can be ...
0
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1answer
919 views

CONVERT to datetime fails on Dynamic SQL - “Conversion failed when converting date and/or time from character string” [closed]

I've spent a few hours with this and still can't get it to work. I'm trying to get the path to the most recent file that matches a pattern for a dynamic SQL query where I'm loading a CSV file into a ...
1
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1answer
41 views

SQL Server 2008 onward - Globalization with Date Time

My application is standalone windows application. Database is SQL Server 2008 onward. The application will be deployed on systems around the globe. User should view the date/time values in their own ...
1
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1answer
71 views

Get closest previous date

I need to get the posts closest to a date. SELECT id , datetime FROM dates WHERE id != 150003 AND datetime > FROM_UNIXTIME(1549622615) ORDER BY datetime LIMIT 1 Returns a correct ...
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1answer
48 views

Converting MySQL 5.5 datetime binary to MySQL 5.6 (math problem)

I received a database "backup" of binary files (.frm and .ibd) that were copied from a MySQL 5.5 install. Unfortunately, I was unable to get these files to import into a MySQL 5.5 vm that I created. ...
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2answers
59 views

Get value increment during an hour of a day

I query YouTube Data Api for a list of most popular videos on a channel and then get their statistics, 4 times per hour (each 15 minutes, by cron). The data is stored in Postgres, but dumping it and ...
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2answers
653 views

Find the OverLapped (Common) Date Range from Group of Date Ranges

How can I find the Overlapped (common date range) from a group of Date Ranges given? The following table contains events and programmes (EID and PID respectively) CREATE TABLE #EventsTBL ( PID ...
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1answer
29 views

redesign database around selecting rows by time range

I currently have a MySQL database that grows about 50,000 rows a day. When querying data out of the database, I query information from the info table and use a subquery on the session table to refine ...
0
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2answers
171 views

How to store date & time in DECIMAL(18,3)?

I am currently working with a database scheme that contains a DECIMAL(18,3) column that is supposed to contain date and time. Sadly, I do not have any example data and need to create it myself. ...
1
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1answer
39 views

Searching through dates query not working?

I'm trying to query the recent week rows by using dates. BUT the query is not returning any result. It takes forever to execute. I checked my DataBase where date is saved in 1446976737 format which ...
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2answers
137 views

Group by range DATIME of 2h up or down - Mysql

Well, I have a table with some columns that some of these are repeated, but the time is not exactly the same, I need to do a group by that has a range of 2 hours. Notice that all the fields marked in ...
0
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1answer
40 views

How can I get the last second of the last month as a default parameter value?

I am trying to get the last second of the last month as a default value for a parameter. I can get the last day of the last month from this query on social.msdn.microsoft.com last month last day ...
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2answers
29 views

select newest update record among similar record

I have 2 tables segments and summaries. I want to list the shows in a date interval and just show the latest updated segments (in bold) since it is the freshest copy of the segment for that person. ...
0
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1answer
42 views

How to query from the result of a changed column of a table in postgresql

I am working with Presto on Amazon Athena. I have a string time column in a table and now I want to change that time to date time type and then query data for selected dates. Is there a direct way to ...
1
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1answer
148 views

how to ignore DST in MySQL

We have a database with flights, and in there, departureTime DATETIME field. Extra info: global.time_zone: Europe/Dublin session.time_zone: Europe/Dublin MySQL version: 5.7 Problem is, I need to ...
2
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1answer
48 views

T-SQL DATEDIFF_BIG - 469ms diff with currentmills and documented start-end constraints incorrect?

(NB I don't count as a db admin... I'm just using one, so please assume zero other knowledge) My reference date is '02/04/2017 18:00:00.124', and for no particular reason, whilst I need the time ...
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1answer
279 views

Calculate Total Working Minutes in MySql

I have a design a table for attendance and here are the genral fileds AttendanceMachineLoginId EmpId AttendanceDateTime Whenever user will come to office, he has to make his attendance. The first ...
0
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1answer
2k views

Converting unix timestamp to an sql timestamp in postgres

I have passed Date.now() and other plain unix timestamps like 1534360109480 into sql and ran them through this. "@converted_date" = to_timestamp("@date") AT TIME ZONE 'UTC'; And it consistently ...
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3answers
61 views

What circumstances could a SQL DateTime column hold an invalid date?

I have been asked to write a series of tests within SQL. Many of them are to test if a certain DateTime columns held in the system is a valid date. Given that the all the fields in question are ...
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1answer
935 views

MySQL - Change Default TimeZone changed all values in TIMESTAMP column

I have a few columns with the data type TIMESTAMP. Initially the timezone was default. So I have added the values like this. mysql> create table test (t1 timestamp, t2 datetime); Query OK, 0 rows ...
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1answer
309 views

SQL Server datetime column datatype stores offset

Does the SQL Server datetime column have the capability to store the offset of the time? I'd like to store a value like YYYY-MM-DDThh:mm:ss±hh e.g. 2015-07-14T10:08:15+01 But when I insert the ...
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0answers
140 views

Generate Slot Summaries(chunks of continuous slots) from the Slot table

We have a Slot table to store appointments. The app receives the date and multiple slots which are then divided into smaller slots of 15 mins interval. CREATE TABLE `Slot` ( `id` int(10) ...
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2answers
1k views

How to Concatenate DateTime to nvarchar field

I have a table with a nvarchar(32) column and I want to update the value in this column with the first 10 bytes of another field on the table which is defined as nvarchar(32) after the 10 bytes I want ...
2
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2answers
556 views

Select results inclusively based on NOW()

My query is the following: SELECT count(db.user_data.page_url) AS total_urls, db.authors.author FROM db.authors LEFT JOIN db.user_data ON db.authors.author_id = db.user_data.id WHERE (db.user_data....
3
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1answer
191 views

What does 0 in DATEDIFF(MINUTE, 0, <Date>) actually mean?

So, our data team asked for some help in solving a problem they had. I eventually tracked it down to some really out of range data (1/1/0001) and a DATEDIFF function they were using. While I've ...
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2answers
14k views

How to extract data between yesterday and today?

I have a column called createdate of datetime datatype. I want to extract data between today and yesterday. select * from table1(nolock) where createdate ='2018-06-01' --not getting any output I ...
3
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3answers
2k views

How do I round time to the upper multiple of an arbitrary time interval?

Example: If the current time is 2018-05-17 22:45:30 and the desired interval is INTERVAL '5 minute', then the desired output is 2018-05-17 22:50:00. If the current time is 2018-05-17 22:45:30 and the ...
2
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0answers
135 views

Delete rows within a given time interval

I have created a table with the following values: create table MyTable (id int, dtdate datetime, serialNum int, serialCode int, status int); insert into MyTable values (1, 2012-12-20 01:01:00, 1, 10, ...
2
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2answers
8k views

Split Date and Time in sql query

I have a table that looks like this: Table: CUSTTRIPID TPTRIPID CUSTOMERID ENTRY_TOLLTXNID EXIT_TOLLTXNID ENTRYTRIPDATETIME EXITTRIPDATETIME TRIPIDENTMETHOD TRIPCHARGETYPE ENTRYLANEID ...
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0answers
728 views

PostgreSQL datestyle / OS locale issue

The problem of this issue has been identified and can be treated as resolved. (see the comments bellow) I try to install a web-application on a server (debian) and on a local machine (ubuntu). When ...
2
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1answer
83 views

Timezone considerations when choosing an appropriate datatype

We are currently developing a task management system for our bespoke application. After a lot of deliberation we came to the conclusion that we only need users to specify the due date for a task. I ...
0
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2answers
80 views

How to append zeros to substring Datetime values in sql table?

I need to change a DateTime to a new format by appending zeros to dates less than 10. DateTime column is nvarchar(MAX) Currently: - April 8 2018 4/8/2018 00:00:00 AM New wanted format: 4/**08**/...