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Improve formatting in doc/Update.md

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- Fix typo
- Enforce Markdown convention of a sentence per line
- Improve SQL formatting regarding language keywords and escaped identifiers
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Hypolite Petovan 2021-02-07 22:00:47 -05:00 committed by GitHub
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@ -80,11 +80,9 @@ This method is slower overall, but it is better suited for large numbers of dupl
### Resolving Possible Database Issues Post Upgrading ### Resolving Possible Database Issues Post Upgrading
#### Foriegn Keys #### Foreign Keys
Some of the updates include the use of foreign keys now that will bump Some of the updates include the use of foreign keys now that will bump into issues with previous versions, which would sometimes shove bad data into tables, preventing, causing errors such as below.
into issues with previous versions, which would sometimes shove bad
data into tables, preventing, causing errors such as below.
``` ```
Error 1452 occurred during database update: Error 1452 occurred during database update:
@ -95,14 +93,13 @@ ALTER TABLE `thread` ADD FOREIGN KEY (`iid`) REFERENCES `item` (`id`) ON UPDATE
All current known fixes for possible items that can go wrong are as below. All current known fixes for possible items that can go wrong are as below.
```SQL ```SQL
delete from item where `owner-id` not in (select id from contact); DELETE FROM `item` WHERE `owner-id` NOT IN (SELECT `id` FROM `contact`);
delete from item where `contact-id` not in (select id from contact); DELETE FROM `item` WHERE `contact-id` NOT IN (SELECT `id` FROM `contact`);
delete from notify where `uri-id` not in (select id from `item-uri`); DELETE FROM `notify` WHERE `uri-id` NOT IN (SELECT `id` FROM `item-uri`);
delete from photo where `contact-id` not in (select id from contact); DELETE FROM `photo` WHERE `contact-id` NOT IN (SELECT `id` FROM `contact`);
delete from thread where iid not in (select id from item); DELETE FROM `thread` WHERE `iid` NOT IN (SELECT `id` FROM `item`);
delete from item where `author-id` not in (select id from contact); DELETE FROM `item` WHERE `author-id` NOT IN (SELECT `id` FROM `contact`);
delete from diaspora-interaction where uri-id not in (select id from item-uri); DELETE FROM `diaspora-interaction` WHERE `uri-id` NOT IN (SELECT `id` FROM `item-uri`);
``` ```
This all has been compiled as of currently from issue #9746, #9753, This all has been compiled as of currently from issue #9746, #9753, and #9878.
and #9878.