cli: don't refresh prompt on line continuations #61207
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Previously, the CLI would recalculate its prompt (including any required network roundtrips to determine transaction status and current database) on every newline, even if the newline came in the middle of a SQL statement. This was wasteful, of course, but it's also very confusing for users when entering a large multi-line statement via paste: the prompt refreshes defer until enter is pressed for the first time, and there is a lot of unexplained latency during the statement that doesn't reflect the actual SQL being executed. It also doesn't match the reported execution time, leading to mass confusion and sadness. Now, we don't bother refreshing the prompt during line continuations. Release note (cli change): optimize handling of multi-line SQL strings to avoid unwanted extra server roundtrips. Release justification: bug fixes and low-risk updates to new functionality
|
This change is |
knz
approved these changes
Feb 28, 2021
There was a problem hiding this comment.
Reviewed 1 of 1 files at r1.
Reviewable status:complete! 0 of 0 LGTMs obtained
|
bors r+ |
|
Build succeeded: |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Previously, the CLI would recalculate its prompt (including any required
network roundtrips to determine transaction status and current database)
on every newline, even if the newline came in the middle of a SQL
statement. This was wasteful, of course, but it's also very confusing
for users when entering a large multi-line statement via paste: the
prompt refreshes defer until enter is pressed for the first time, and
there is a lot of unexplained latency during the statement that doesn't
reflect the actual SQL being executed. It also doesn't match the
reported execution time, leading to mass confusion and sadness.
Now, we don't bother refreshing the prompt during line continuations.
Closes #61095
Release note (cli change): optimize handling of multi-line SQL strings
to avoid unwanted extra server roundtrips.
Release justification: bug fixes and low-risk updates to new functionality