`table_diff` to run multiple data diffs at the same time based on the differences between environments.

[sungchun12]

Whenever a user makes changes, table_diff is a great feature to reach for to validate model differences. However, it is cumbersome to manually write out the specific models to diff each time. There should be a flag to automatically diff all models impacted directly/indirectly based on latest state diff, so it doesn't have to be so tedious.

sqlmesh table_diff prod:dev --impacted
sqlmesh table_diff prod:dev --impacted --show-sample
sqlmesh table_diff prod:dev -i shortcut flag
sqlmesh plan dev --diff-impacted same thing as above but in the scope of the plan changes after this specific plan is applied.
sqlmesh plan dev -di shortcut flag

Considerations:

• Enforces grain as required for all models to diff. This is reasonable to expect and something I enforced when data-diff was still alive.
• Run all table diffs concurrently
• No need to add a flag to diff all models, so we don't tempt users to waste time diffing where not needed

Video example for look and feel