I would like to see all the data (all columns) related to the last 3 dates of an ID The result would be in this case: Could you please help me? Answer You can use window functions:
foreach array wise multi SQL query not working in PHP
I am trying to execute multiple queries with the multiple selected checkbox value-wise in PHP. I am facing trouble that my code is executing only one checkbox value-wise query and the rest is denied. …
Nested SQL AND OR Statement fails. Where is my mistake? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last year. Improve this question I wanna get the data set where either latitude is between x and y value OR where adress is equ…
Partition By Logic
I have a dataset that has roughly 1 million rows. Without hard coding any claims, what would be the way to get the resulting output? From my research I determined something like DENSE_RANK or ROW_NUMBER() with a partition expression should do the trick.Is there a way to use DENSE_RANK to say “go down th…
Display both values of same column after comparing rows (with inner join)
When you perform an inner join to compare 2 values of the same column, but different rows, with eachother. How do you include both compared values of the same column? Without error “column specified more than once” In the new table I want to see a.var2 and b.var2. Answer You need alias names for t…
Filter out specific value without excluding the NULL rows
I have the following table and I want to filter out a specific value but keeping the null (empty) rows. I tried different ways but the query kept filtering out the null rows. For example, I only want to filter out the rows with the orange, the output table should be: I also tried with OR All of the returned
SQL field does not have a default value – Even though field is set to default NULL
I have an older SQL database that I am trying to use, I am not sure of the version it was originally built for but I am trying to use it with Maria 10.2 table1 looks like this… And I am trying to write a firstname to it with a prepared statement like this… I am getting an SQL error…..
Data type for SQL aggregate functions (COUNT, SUM, AVG)
New to SQL. Say I run this query: This will return a single row with a field called “TotalSuppliers”. In my database, the result was “778”. When tested in C# using typeof, the type for this field was short (the ODBC SMALLINT or OleDB SmallInt data type). This matched the data type of t…
How to carry over latest observed record when grouping by on SQL?
(I’ve created a similar question before, but I messed it up beyond repair. Hopefully, I can express myself better this time.) I have a table containing records that change through time, each row representing a modification in Stage and Amount. I need to group these records by Day and Stage, summing up t…
Why select invalid field in subquery could run in BigQuery?
For the following sql Since there is no a in temp.a1 and there should be an error here, However, the output of Bigquery is Why the result happened? On the other side, when run select distinct a from temp.a1; there is one error Unrecognized name: a comes up. Answer Your query is: You think this should be: And …