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feat(sqlite): track nullable through left joins

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This commit is contained in:
Ryan Leckey
2020-07-27 03:11:31 -07:00
parent 0c0dd6936a
commit b0c430ed18
3 changed files with 87 additions and 36 deletions
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33
tests/sqlite/describe.rs
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@@ -186,3 +186,36 @@ async fn it_describes_bad_statement() -> anyhow::Result<()> {
Ok(())
}
#[sqlx_macros::test]
async fn it_describes_left_join() -> anyhow::Result<()> {
let mut conn = new::<Sqlite>().await?;
let d = conn.describe("select accounts.id from accounts").await?;
assert_eq!(d.column(0).type_info().name(), "INTEGER");
assert_eq!(d.nullable(0), Some(false));
let d = conn.describe("select tweet.id from accounts left join tweet on owner_id = accounts.id").await?;
assert_eq!(d.column(0).type_info().name(), "INTEGER");
assert_eq!(d.nullable(0), Some(true));
let d = conn.describe("select tweet.id, accounts.id from accounts left join tweet on owner_id = accounts.id").await?;
assert_eq!(d.column(0).type_info().name(), "INTEGER");
assert_eq!(d.nullable(0), Some(true));
assert_eq!(d.column(1).type_info().name(), "INTEGER");
assert_eq!(d.nullable(1), Some(false));
let d = conn.describe("select tweet.id, accounts.id from accounts inner join tweet on owner_id = accounts.id").await?;
assert_eq!(d.column(0).type_info().name(), "INTEGER");
assert_eq!(d.nullable(0), Some(false));
assert_eq!(d.column(1).type_info().name(), "INTEGER");
assert_eq!(d.nullable(1), Some(false));
Ok(())
}