Jump to content

Mysql to sqlite conversion trouble


Guest

Recommended Posts

I have been converting mysql to sqlite and for basic queries have had good success but I ran across this one I can figure out how to convert its a bit over my head can someone help

SELECT a.key, a.data, a.date_added FROM ((SELECT ('customer_' || ca.key) AS `key`, ca.data, ca.date_added FROM `customer_activity` ca) UNION (SELECT ('affiliate_' || aa.key) AS `key`, aa.data, aa.date_added FROM `affiliate_activity` aa)) a ORDER BY a.date_added DESC LIMIT 0,5

I get this error

 

Query Error: near "UNION": syntax error Unable to execute statement

 

Thanks

Link to comment
Share on other sites

Took some trys but I think that might just have been the issue

SELECT a.key, a.data, a.date_added FROM (SELECT ('customer_' || ca.key) AS `key`, ca.data, ca.date_added FROM `customer_activity` ca UNION SELECT ('affiliate_' || aa.key) AS `key`, aa.data, aa.date_added FROM `affiliate_activity` aa) a ORDER BY a.date_added DESC LIMIT 0,5

That looks like it works! Thanks so much!

Link to comment
Share on other sites

@Jacques1 would that be more efficient? Also did you format that by hand or use a tool?

 

I came across another one that throws something into the mix I dont know anything about the LEFT JOIN 

SELECT `or`.order_recurring_id, `or`.order_id, `or`.reference, `or`.`status`, `or`.`date_added`, CONCAT(`o`.firstname, ' ', `o`.lastname) AS customer FROM `order_recurring` `or` LEFT JOIN `order` `o` ON (`or`.order_id = `o`.order_id) ORDER BY or.order_recurring_id DESC LIMIT 0,20

Query Error: near "or": syntax error Unable to execute statement

 

Im assuming its the first `or` where the error is but it looks good to me (is there a way to tell where a sqlite error occured? like character count or something)

Link to comment
Share on other sites

“OR” is a reserved word in SQL, representing the logical “OR” operation.

 

It's theoretically possible to use it anyway if you always(!) put it in quotes, but this is very bad style and a bad habit you need to get rid of. Don't use reserved words as identifiers, and don't clutter your queries with backticks. Whether those cryptic aliases even make sense is also questionable, because they don't exactly improve readability. If typing a few characters annoys you so much, use a proper IDE with SQL autocompletion.

Link to comment
Share on other sites

That was it! I thought it was something more complicated

I didnt make these sql statements im just converting a script so didnt have any say in the or

Thank you guys!

Link to comment
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.