I have a ecosystems table, which is self-referencing because each ecosystem can have sub-ecosystems. Each ecosystem can also have a score (which represents how healthy the ecosystem is). The columns are (with example data): The full_slug column represents the full path from top-level ecosystem down. It is redundant as it can be deduced from the slug and parent_slug columns, but
Tag: sqlite
SQL CHECK() how to check if input is numeric value?
Hey how can I check if the input has 5 numbers? I tried everything like isnumeric/LIKE ‘%[0-9]%’ they all not working… I tried the following but it doesn’t work.. please help Answer You can use GLOB operator: See the demo.
Check digit constraint in SQLite
I’m trying to create a constraint for an id (5 digits in length) where the 5th digit is the last digit of the value (1 x d1 + 3 x d2 + 1 x d3 + 3 x d4). For instance, if the first four characters of the id are 1234, then the fifth digit is the last digit of
SQLite String start with first 6 letters in alphabet table
I need to select the name strings that the first character to be on of A to F or a to f, here is my select clause, but I got noting returned. Answer You could use the GLOB operator here:
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.PropertyAddress) to the missing PropertyAddress cells using the below: However,
Python add items into dictionary from database table (sqlite3)
I have created a database table called fruits with 3 columns, id(int primary key), fruits(text) and weight(float). id fruit weight 1 Apple 80.5 2 Pear 150.8 3 Kiwi 69 How do I create a dictionary and add all the fruits and weight as key-value pairs to the dictionary? Answer Something like this: fetchall() returns a list of tuples of values
Get percentage of total using sub selection
I have a query that sums sold units and groups them by store. See code and/or SQL-fiddle below: http://www.sqlfiddle.com/#!5/95f29/6 However, I also want the percentage sold by each unit to the total and have therefore created a column named “sold_total”. After the output of this query is generated I need to save it and do another query to get the
how to sanitize sql.js inputs?
I am using sql.js to manage the SQLite file I created for an electron app. My issue is that I want to make sure all the inputs are sanitized. As of now, I am using statements like so: I’m pretty sure that this way is unsafe and can cause SQL injections. What can I do to prevent such a problem?
Grouping repeated numbers sqlite table
I have this table and I need the query to show the numbers repeated more than 2 times in which draw. I expect this result I’m doing this: But it doesn’t work. Thanks in advance. Answer You can first transpose your data with a cte and union, and then use group by:
In the Treeview I only display the ID of a line and not the remaining (empty) fields
I receive an error updating the TreeView, after clicking on the button to filter the data of a database through two comboboxes. The filtering appears to be successful, but only the staff ID is displayed in the tree view and not all related data. Without using the filter button, everything is fine. This is the function of the button that