Will context be used by default in the entire sql transaction?

I was wondering if you use the context to start the transaction if the entire transaction will be "listening" here?

tx, _ := db.BeginTx(ctx, &sql.TxOptions{Isolation: sql.LevelSerializable})
stmt, _ := tx.Prepare("SELECT id, timeout, lang FROM client WHERE id=?")

Or do you explicitly apply the context to each query?

tx, _ := db.BeginTx(ctx, &sql.TxOptions{Isolation: sql.LevelSerializable})
stmt, _ := tx.PrepareContext(ctx, "SELECT id, timeout, lang FROM client WHERE id=?")

Correct answer

No. Prepare and other context-free methods, please use context.Background.

From Tx.Prepare documentation...

View Source code, it's just a simple wrapper.

func (tx *Tx) Prepare(query string) (*Stmt, error) {
    return tx.PrepareContext(context.Background(), query)
}

While Tx does store context from db.BeginTx, this is only used for transactions. It won't use it for queries because shared context would cause confusion and limit .

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