In my app customers can build up credit in different categories and then spend it on things the relevant table looks like this: There is one entry for every category in which a user has credit There are 2 constraints, one to make sure the amount is never negative and there is only one user category connection…
Tag: sql
Is there any way in Oracle to skip a value in a select when it has been already shown?
Sorry because maybe it’s a silly question but honestly I don’t know how to handle it. Let’s imagine that after executing a select with a group by clause I have the following information: But I would like to obtain the following: In other words, I don’t want to show a previously shown v…
How to check if a value exists in an array type column using SQL?
I am having a bigquery table with many columns including one array type column of zero or many integers. For instance: Using BigQuery SQL, I want to generate another column exists if any value of tuple (3, 10) is included in some_numbers arrays. My desired output: How can I do this? Answer Consider below appr…
Extract date from a column
How to extract date from a string like ‘2:24 PM 6-20-2021’? For example, I have a column called Dates (datatype ‘String’) in the table like below – The output should be Answer How to extract date from a string? If you want to extract date as a date type so you will be able then t…
Create a function that accepts a string and returns multiple rows
I’m being required to create a function that transforms a single column’s value based on the user’s input. I need some help on the syntax for doing so. Here is the query I’m currently performing to get the rows: some pseudocode on what I’m trying to do: I’ve been trying to …
Select to pull Zip code based both foreign and domestic
I need to write a T-SQL procedure where the parameter is zip code. We’ve got the following parameter declared. Sample data in table: postal_codes NULL 46383 074523632 B4H34 113601419 ZH/8600 A1G 9Z9 WN73R Wd3 3he 89136 etc. We’ve got a variety of addresses some having no postal code for certain fo…
How to copy data from one column to another?
I am trying to add Property Address in columns that have a missing value. I use the below to identify common parcel IDs with corresponding property address since the same parcelIDs have the same PropertyAddress as well. I get this result: Now I want to add the data in column IFNULL(n.PropertyAddress,n2.Proper…
How to incrementally take average in Oracle SQL Or Python
I am bit stuck with this not getting how do i proceed further Assume I have below data in table Note : All the below column fields [NAME , AGE , COURSE , MARKS] are set to VARCHAR2(50 CHAR) Using below query I am able to get incremental sum , but not able to apply logic how to get incremental
SQL Script does not publish
When I publish my DB in in Visual Studio, my script does not publish. Answer Right click on the script. Select Properties. Look at the Build Action. Choose Build. Try to publish again. Also make sure you edit the DB csproj in and change from NONE to BUILD: right click the DB project unload project right click…
sql query to exclude not null columns
I have below table and records Now i do not want to display the rows having null values in the columns except primary key column. I used below query to arrive the above result. But my orginal table having 72 columns how can i check all the columns for getting above result. / Answer You could check the length …