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fix(docs): improve discussion of prepared statements support
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andrewmbenton committed Aug 11, 2023
commit 4d919650e3061c3e9383cdb35016679c5b5624f3
14 changes: 10 additions & 4 deletions docs/howto/prepared_query.md
Original file line number Diff line number Diff line change
@@ -1,5 +1,15 @@
# Preparing queries

If you're using `pgx/v5` you get its
[implicit support](https://github.com/jackc/pgx/wiki/Automatic-Prepared-Statement-Caching)
for prepared statements. No additional `sqlc` configuration is required.

For other drivers, `sqlc` can give you the option to explicitly use prepared
queries. These prepared queries also work with transactions.

You'll need to set `emit_prepared_queries` to `true` in your `sqlc` configuration
to generate code similar to the example below.

```sql
CREATE TABLE records (
id SERIAL PRIMARY KEY
Expand All @@ -10,9 +20,6 @@ SELECT * FROM records
WHERE id = $1;
```

sqlc has an option to use prepared queries. These prepared queries also work
with transactions.

```go
package db

Expand Down Expand Up @@ -80,4 +87,3 @@ func (q *Queries) GetRecord(ctx context.Context, id int32) (int32, error) {
return id, err
}
```