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Transactions aren't executed with "psql -c" #9

Merged
merged 1 commit into from
Aug 31, 2023
Merged

Transactions aren't executed with "psql -c" #9

merged 1 commit into from
Aug 31, 2023

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tbjuhasz
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The transaction did not appear to execute when running a set of SQL commands using psql commands with the '-c' option, such as "SELECT * FROM t; BEGIN; UPDATE t SET k = id; END;". This issue was caused by the tokio-postgres crate adding column information to all EmptyQueryResponses for every SQL query. The resolution for this issue was to only add the column information to 'SELECT' queries.

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@dfwilbanks395 dfwilbanks395 left a comment

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lgtm. Left some comments on style

tokio-postgres/src/simple_query.rs Outdated Show resolved Hide resolved
}
}

match client

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Probably can just be client.simple_query(..).await.unwrap()

tokio-postgres/tests/test/main.rs Outdated Show resolved Hide resolved
_ => panic!("unexpected message"),
}
match &messages[3] {
SimpleQueryMessage::CommandComplete(CommandCompleteContents { fields: f, .. }) => {

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This can be SimpleQueryMessage::CommandComplete(CommandCompleteContents { fields, .. }) if fields.is_none() => {}. Then the fields.is_some() case is captured in _ =>. Same for the below cases.

Also this is a nit, but we typically wouldn't alias using fields: f, instead of referencing as fields,

}
match &messages[4] {
SimpleQueryMessage::CommandComplete(CommandCompleteContents { fields: f, .. }) => {
if let Some(field_vec) = &f {

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I think you can match with SimpleQueryMessage::CommandComplete(CommandCompleteContests { fields: Some(f), ... }) instead of checking whether fields is_some() in the body.

tokio-postgres/tests/test/main.rs Outdated Show resolved Hide resolved
tokio-postgres/tests/test/main.rs Outdated Show resolved Hide resolved
The transaction did not appear to execute when running a set of SQL commands using psql commands with the '-c' option, such as "SELECT * FROM t; BEGIN; UPDATE t SET k = id; END;". This issue was caused by the tokio-postgres crate adding column information to all EmptyQueryResponses for every SQL query. The resolution for this issue was to only add the column information to 'SELECT' queries.
@tbjuhasz tbjuhasz merged commit 9732087 into master Aug 31, 2023
@tbjuhasz tbjuhasz deleted the REA-3121 branch August 31, 2023 18:23
readysetbot pushed a commit to readysettech/readyset that referenced this pull request Sep 1, 2023
Bump deps on crates in our rust-postgres fork to include this merged PR:
readysettech/rust-postgres#9

Change-Id: I59d1f7882b74d6c418eea8eef35ada1c26c4f7f7
readysetbot pushed a commit to readysettech/readyset that referenced this pull request Sep 2, 2023
Bump deps on crates in our rust-postgres fork to include this merged PR:
readysettech/rust-postgres#9

Change-Id: I59d1f7882b74d6c418eea8eef35ada1c26c4f7f7
Reviewed-on: https://gerrit.readyset.name/c/readyset/+/5958
Tested-by: Buildkite CI
Reviewed-by: Dan Wilbanks <[email protected]>
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2 participants