Say I have SQLite table with the following records: recID productID productName 1 1 Product A 2 2 Product B 3 2 Product C 4 3 Product D 5 3 Product D recID = primary key, auto increment. If I run: Result is: productID productName 1 Product A 2 Product B 2 Product C 3 Product D As you can
Tag: sqlite
UninitializedPropertyAccessException in Android Studio using Kotlin
I am a beginner making use of a Roomdatabase. Mostly using it to load in and pass items between tables using simple relationships. For some reason it isn’t properly adding the selected item from the recyclerView adapter to the selectedItem variable. Would appreciate any insight into why this is happening all of a sudden. Answer It turned out that the
How do I select floating-point infinity literals from a SQLite database?
I have a SQLite database with a table named measurements, which contains some experimental data measured by a power meter. They’re stored as data type REAL in a field named power_dbm. In some measurements, the readings can be off the scale, the meter cannot obtain a reading due to overrange or underrange, thus the values +Inf and -Inf are used
Need help by populating a PrimeReact Tree
I’m trying to populate a PrimeReact Tree with data from sqlite3 database, but it doesnt work. Here is my SQL-Query: I get following JSON-Code: This is OK but i figured out, that the children are not rendered, because there are quotes around the square brackets at the children path – how can i fix this? Answer If initial is your
SQL to select the value of a column matching multiple values in another column?
I have a Chat_User join table, and want to retrieve the ChatId of a between specified UserId of x and y. Chat_User table: I tried: But it returns ChatId of a and c, but I only want a, as it has BOTH of my specified UserId(x and y). Any way to achieve this? Thanks Answer Aggregation offers one approach:
SQL: How to combine values in column week (i.e. week 1, week 2, etc) into week range (week 1-2 or week 1, 2)?
General SQL question using online SQLite editor, if I have the following table: item week sales item1 1 35 item2 1 25 item3 1 24 item1 2 35 item2 2 34 item1 3 24 item2 3 45 item1 4 44 item2 4 51 item1 5 1 item3 5 100 how would I get the output to be this: item weeks
How to pipe window function output directly into a new window function in SQL?
I am new to SQL and I have the following query: This doesn’t work due to no such column: MyMax. Even though from my understanding the column for MyMax is being created on the fly, I’m guessing SQL still isn’t able to use its values immediately as an input into the next window function I already tried creating the column
How to convert large .csv file with “too many columns” into SQL database
I was given a large .csv file (around 6.5 Gb) with 25k rows and 20k columns. Let’s call first column ID1 and then each additional column is a value for each of these ID1s in different conditions. Let’s call these ID2s. This is the first time I work with such large files. I wanted to process the .csv file in
Update and renew data based on data in other tables
There are 3 tables student, course, and takes as following tot_cred column data in the student table now is assigned with random values (not correct), I want to perform the query that updates and renews those data based on the course’s grade each student has taken. For those students who received F grade will be excluded and those who didn’t
sqlite query based on selecting from column string and filtering by last rows in descending order
I have a database, tick_df, that looks like this I am trying to select all columns and the last 2 rows in descending time order from only one symbol – e.g.AVAX/USD:USD. The query I have tried is But this return an error can anyone point to what I’m doing wrong here. Thanks Answer If you look at the error message