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Update Faq - Bulk upsert with optional fields #2865

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merged 2 commits into from
Nov 8, 2023
Merged

Update Faq - Bulk upsert with optional fields #2865

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d25872c
Update Faq - Bulk upsert with optional fields
Vrajs16 Nov 7, 2023
33e993a
Applied Suggestion + fixed typo
Vrajs16 Nov 8, 2023
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14 changes: 11 additions & 3 deletions FAQ.md
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Original file line number Diff line number Diff line change
Expand Up @@ -140,15 +140,23 @@ sqlx::query!(
let foo_texts: Vec<String> = vec![/* ... */];
let foo_bools: Vec<bool> = vec![/* ... */];
let foo_ints: Vec<i64> = vec![/* ... */];
let foo_opt_texts: Vec<Option<String>> = vec![/* ... */];
let foo_opt_naive_dts: Vec<Option<NaiveDateTime>> = vec![/* ... */]


sqlx::query!(
"
INSERT INTO foo(text_column, bool_column, int_column)
SELECT * FROM UNNEST($1::text[], $2::bool[], $3::int8[])
INSERT INTO foo(text_column, bool_column, int_column, opt_text_column, opt_naive_dt_column)
SELECT * FROM UNNEST($1::text[], $2::bool[], $3::int8[], $4::text[], $5::timestamp[])
",
&foo_texts[..],
&foo_bools[..],
&foo_ints[..]
&foo_ints[..],
// Due to a limitation in how SQLx typechecks query parameters, `Vec<Option<T>>` is unable to be typechecked.
// This demonstrates the explicit type override syntax, which tells SQLx not to typecheck these parameters.
// See the documentation for `query!()` for more details.
&foo_opt_texts as &[Option<String>],
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&foo_opt_naive_dts as &[Option<NaiveDateTime>]
)
.execute(&db)
.await?;
Expand Down