I have this select statement where I found two rows, and I want to update a specific column: I have tried: How do I correctly construct the update query? SOLUTION: Answer Just put your query as a table: Here is a demo: DEMO
Tag: sql
SQL How to avoid groupby
I have this query that it results is not correct and I assume it groupby issue Fiddle This is my dbfiddle Query Result Expected In reality only user1 has done 4 requests Answer Your result shows one registry with ‘Title1’. Per registry you can have many users (in table RegistryMember). And per reg…
Unique combination of records in a SQL table (Get edges from nodes table)
I came across a use case where I wanted to generate a combination table where the attributes of a record had to be matched with all other records in the table. Something like creating list of edges in a Complete Graph using a nodes table. To give you an example of the requirement, you can consider the followi…
tweetImage not showing an image
Here is my line 51, Here is my code. When I execute it I GET THIS When i replace ‘tweetImage’ with ‘profileImage’in line 51.My profileImage successfully gets uploaded in place of blank thumbnail.I want the tweetImage uploaded by the user to be uploaded in place of the blank thumbnail.I…
SQLite – Excluding rows from a query based on certain column values, without using correlated subqueries
I’m working with the classicmodels database, originally for MySQL, but which we’re using with SQLite. Within this database, there are 2 tables of interest, the orderdetails table… … and the products table. I’ve written a query to list all the distinct order numbers, along with th…
Create daily logs based on records that contain multi day values
This is an extension to this question: Break down long multi day periods of time into several single day periods where the problem was solved using Tallies. The situation I am dealing now is let’s say I have a table like this: The goal is to create a daily outage report over a period of time (Let’…
How to capture first row in a grouping and subsequent rows that are each a minimum of 15 days apart?
Assume a given insurance will only pay for the same patient visiting the same doctor once in 15 days. If the patient comes once, twice, or twenty times within those 15 days to the doctor, the doctor …
Sum of column returning all null values in PySpark SQL
I am new to Spark and this might be a straightforward problem. I’ve a SQL with name sql_left which is in the format: Here is a sample data generated using sql_left.take(1): Note: Age column has ‘XXX’,’NUll’ and other integer values as 023,034 etc. The printSchema shows Age,Total …
I cant do a select by one of its parameters even if it exists in the database. Encoding issues? PostgreSQL
I have a postgresql database snapshot with the following structure But it has some weird issues, for example I have this data Some example of data is: Well the problem is now that I do this select 0 returns But if i do It does return the result What is going on? It works with some addresses, but doesn’t…
How to transform data into a map using group by in Hive SQL?
I have data like below …and I want to create a map with lecture as the key and count as a value. How can I get an output like below? Answer If you can live with count being a string, you probably be able to use Hive str_to_map() function to get a desired map. That will require a couple of