I have set of timestamps: how I can concatenate it to dates? expected: Answer You would cast it to a date and the use distinct to get the distinct dates
Tag: sql
How can I create summaries across columns?
I have an existing application database table supporting an application, and I’ve been tasked with adding another feature. Currently, we have a build table that stores information about product builds….
How to create generated columns in DB2/400
I wanna create a virtual column which concatenates two columns to 1. My attempt was: This should work according to the docs. ( https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/db2/rbafzpdf.pdf?view=kc ) (page 851). Has anyone an idea how to get this done? Thanks in advance. edit: I doublechecked it. T…
Why ROW_NUMBER is defined as window function?
I would like to understand better the meaning of window function. The definition says: A window function performs a calculation across a set of table rows (the window) that are somehow related to the current row Let’s consider ROW_NUMBER() (the same could be applied for RANK() or DENSE_RANK()). The func…
MySQL use JSON_CONTAINS with a subquery
I’m trying to make a subquery inside JSON_CONTAINS to have a results like this This is what I have tried But since the subery query returns Client instead of “Client” JSON_CONTAINS doesn’t accept the value. ERROR 3141 (22032): Invalid JSON text in argument 1 to function json_contains: …
Sum two column values on the basis of two name column
I am new to Postgres database. I am given 4 columns homeTeamName, homeTeamGoals, awayTeamGoals, awayTeamName. I want to find out the total goal(homeTeamGoals + awayTeamGoals) scored by each team. the database is as follows I think my solution is wrong. So looking for a better way Answer You can separate the t…
SQL Server – Dsiplay all rows from LEFT table even when the condition is not met
I want to get all Titles and Scores for a Given skill Id, every skill has titles mandatorily but there may not be records in the Answer table matching the condition A.[ServiceId] = 45 in this case i still need to display all the Titles and 0 as score For this purpose i made LEFT Join and still it doesn’…
How to use relational database with flutter [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 1 year ago. Improve this question I’m currently making an app using Flutter. Now I really want the da…
Oracle SQL Select Only 5 Digit Row in a Column [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 1 year ago. Improve this question SLNO Column select only 5 digit row Answer Please use length function of or…
Selecting multiple columns for updating in Linq
I have a products table which contains thousands of products. I want to update only two columns (price, isAvailable) of this table. So is there is a way to select only those two columns from this table? This is the code that I am using. But I don’t want to select all columns. I have tried this But this …