I have a table with different species and their occurences (timestamp) from field survey: Now I want to count them, not in total but in chunks of 10 minutes each, where only the first occurence is counted. That means between 12:31 and 12:40 there are species A,B,C. Between 12:41 and 12:50 there are species B,C. For a single 10 minute
Tag: sqlite
SQLite – calculate percentage increase in values of a numeric column
I am interested in getting the % increase or decrease of the values in one column with respect to the previous value. Can someone please advice how I should do this? Thanks This is what my table looks like And this is what I would like Answer Use LAG() window function to get the previous value of sales for each
Find the number of employees working under a manager
I have three tables called branch,employee and manager structured like this I want to view the id of each manager and the count of the employees he has under his supervision like this I have made this so far that shows which branch each manager works on but i don’t know how to proceed with the counting. The solution i
Finding duplicate values in multiple colums in a SQL table and count
I have the following table structure: I use the following command to display the duplicates and the counts: This command gives me a count of 2. I would like to know how the second line could also be counted as a dublicate. Answer You need the scalar functions MIN() and MAX() to get the 3 integer values of each row
Java Sqlite how to print a.rowname
I asked myself how I print a.rowname in Java with jbdc sqlite. Or did I take the wrong solution to fetch all the Selected data? I tried this: And I get this error: In Python it works kind of like this. I can later just get the Selected data from the array: Answer You do not select a.spieler try: Update
How to get count(percentage) for columns after each groupby item?
I have the following table. Using sqlite DB Item Result A Pass B Pass A Fail B Fail I want to realize the above table as below using some query. Item Total Accept Reject A 2 1(50%) 1(50%) B 2 1(50%) 1(50%) How should I construct this query? Answer You can try PIVOT() if your DBMS supports. Then use CONCAT
How to search an sql lite database with python and print out the result in my ide?
I am trying to develop a method whereby it will allow the user to search by a chosen field and value eg. SELECT * FROM table WHERE column_field = ‘value’. It executes just fine in SQL lite but when I bring it into my IDE nothing is printing out. Any advice much appreciated. Answer From sqlite doc keywords page ‘keyword’
Delete the row with the highest date difference
I have a table with values I would like to delete the row with the oldest student. I am able to get the ages with the following command but somehow I cant combine it with the DELETE stament I am using SQL lite Answer This would remove the first of the MAX result if there are some with the same
Many-to-Many Link Table Foreign Key Modeling in SQLite
I have the following two tables in SQLite: Many Main rows may reference the same link id, and many Link rows may have the same link id, such that select * from Main natural join Link where main_id=1 will return N rows, and select * from Main where link_id=1 will return K rows. The link id is important, and the
How can i unlock the Database in Go
Im a newbie in go and not the best in sql. I have a simple Table in my Database with the name of users. I store the SAM, First Name and Last Name in the table. When i now try to change something in the database, i get the error database is locked. Thats my code: decodeJSONBody and checkError work