Method create_savepoint

src/sql-server-util/src/lib.rs:389–405

Creates a savepoint via `SAVE TRANSACTION` with the provided name. Creating a savepoint forces a write to the transaction log, which will associate an [`Lsn`] with the current transaction. The savepoint name must follow rules for SQL Server identifiers - starts with letter or underscore - only contains letters, digits, and underscores - no reserved words - 32 char max

(&mut self, savepoint_name: &str)

    /// - no reserved words
    /// - 32 char max
    pub async fn create_savepoint(&mut self, savepoint_name: &str) -> Result<(), SqlServerError> {
        // Limit the name checks to prevent sending a potentially dangerous string to the SQL Server.
        // We prefer the server do the majority of the validation.
        if savepoint_name.is_empty()
            || !savepoint_name
                .chars()
                .all(|c| c.is_alphanumeric() || c == '_')
        {
            Err(SqlServerError::ProgrammingError(format!(
                "Invalid savepoint name: '{savepoint_name}"
            )))?;
        }

        let stmt = format!("SAVE TRANSACTION {}", quote_identifier(savepoint_name));
        let _result = self.client.simple_query(stmt).await?;
        Ok(())
    }

    /// Retrieve the [`Lsn`] associated with the current session.
    ///