sql: add lazy check for transaction (#963)
sql: add lazy check for transaction (#963)

* Update transaction.md

add lazy check for transaction

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update sql/transaction.md

Co-Authored-By: IzabelWang <3f0ec7fc0b10938dc6cde6d818c73c4fb536e90e@users.noreply.github.com>

* Update transaction.md

* Improved clarity that this is a default behavior

* small typo in url

* It looks like it applies to primary keys too!

* Update to consistently use t1 and id

pingcap/docs,pingcap/docs,pingcap/docs