SQLite Compare two columns - sqlite

Question

I am creating a database for my Psych class and I am scoring a personality profile. I need to compare two test items and, if they match a condition, then copy into a separate table.
Example (pseudocode is between \)Sqlite3
INSERT INTO Scale
SELECT* FROM Questions
WHERE \\if Question 1 IS 'TRUE' AND Question 3 IS 'FALSE' THEN Copy this Question
and its response into the Scale table\\;
I have about 100 other questions that work like this. Sample format goes like this:
IF FirstQuestion IS value AND SecondQuestion IS value THEN
Copy both questions into the Scale TABLE.
---------- EDITED AFTER FIRST RESPONSE! EDITS FOLLOW-------------
Here is my TestItems table:
ItemID | ItemQuestion | ItemResponse
```````````````````````````````````````````````````
1 | Is the sky blue? | TRUE
2 | Are you a person? | TRUE
3 | 2 Plus 2 Equals Five | FALSE
What I want to do: If Question 1 is TRUE AND Question 3 is FALSE, then insert BOTH questions into the table 'Scale' (which is setup like TestItems). I tried this:
INSERT INTO Scale
SELECT * FROM TestItems
WHERE ((ItemID=1) AND (ItemResponse='TRUE'))
AND ((ItemID=3) AND (ItemResponse='FALSE'));
HOWEVER: The above INSERT copies neither.
The Resulting 'Scale' table should look like this:
ItemID | ItemQuestion | ItemResponse
```````````````````````````````````````````````````
1 | Is the sky blue? | TRUE
3 | 2 Plus 2 Equals Five | FALSE

Answer 1

There is nothing wrong with your query. You're just there:
INSERT INTO Scale
SELECT * FROM Questions
WHERE `Question 1` = 1 AND `Question 3` = 0;
Here 1 and 0 are values (in your first case, true and false). First of all you should ensure there are fields Question 1 and Question 3 in your Questions table. Secondly the column count as well as data types of Scale table should match Questions table. Otherwise you will have to do selectively choose the fields in your SELECT query.
Edit: To respond to your edit, I am not seeing an elegant solution. You could do this:
INSERT INTO Scale
SELECT * FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
WHERE (SELECT COUNT(*) FROM (
SELECT 1 FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
) AS t) >= 2
Your insert did not work because ItemID cant be both 1 and 3 at the same time. My solution gets the required records to be inserted into Scale table, but verifies both the record exists by checking the count. Additionally you could (should) do as below since this can be marginally more efficient (the above SQL was to clearly show the logic being used):
INSERT INTO Scale
SELECT * FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
WHERE (
SELECT COUNT(*)
FROM TestItems
WHERE ItemID = 1 AND ItemResponse = 'TRUE'
OR ItemID = 3 AND ItemResponse = 'FALSE'
) >= 2