Method QueryConn

backend/plugin/db/snowflake/snowflake.go:330–413

QueryConn queries a SQL statement in a given connection.

(ctx context.Context, conn *sql.Conn, statement string, queryContext db.QueryContext)

// QueryConn queries a SQL statement in a given connection.
func (*Driver) QueryConn(ctx context.Context, conn *sql.Conn, statement string, queryContext db.QueryContext) ([]*v1pb.QueryResult, error) {
	singleSQLs, err := base.SplitMultiSQL(storepb.Engine_SNOWFLAKE, statement)
	if err != nil {
		return nil, err
	}

	var results []*v1pb.QueryResult
	for _, singleSQL := range singleSQLs {
		statement := singleSQL.Text
		if queryContext.Explain {
			statement = fmt.Sprintf("EXPLAIN %s", statement)
		} else if queryContext.Limit > 0 {
			statement = getStatementWithResultLimit(statement, queryContext.Limit)
		}

		_, allQuery, err := base.ValidateSQLForEditor(storepb.Engine_SNOWFLAKE, statement)
		if err != nil {
			slog.Error("failed to validate sql", slog.String("statement", statement), log.BBError(err))
			allQuery = true
		}

		// Sanitize the schema name by escaping any quotes.
		safeSchemeName := strings.ReplaceAll(queryContext.Schema, "\"", "\"\"")

		// If the queryContext.Schema is not empty, set the current schema to the given schema.
		// Reference: https://docs.snowflake.com/en/sql-reference/sql/use-schema
		if queryContext.Schema != "" {
			if _, err := conn.ExecContext(ctx, fmt.Sprintf(`USE SCHEMA "%s";`, safeSchemeName)); err != nil { // NOSONAR(go:S2077) safeSchemeName is sanitized by escaping double quotes above
				return nil, err
			}
		} else {
			// If the queryContext.Schema is empty, we try to set the current schema to "PUBLIC" and ignore the error because
			// the schema may not exist.
			if _, err := conn.ExecContext(ctx, "USE SCHEMA PUBLIC;"); err != nil {
				slog.Debug("failed to set schema to PUBLIC", log.BBError(err))
			}
		}

		startTime := time.Now()
		queryResult, err := func() (*v1pb.QueryResult, error) {
			if allQuery {
				rows, err := conn.QueryContext(ctx, statement)
				if err != nil {
					return nil, err
				}
				defer rows.Close()
				r, err := util.RowsToQueryResult(rows, util.MakeCommonValueByTypeName, util.ConvertCommonValue, queryContext.MaximumSQLResultSize)
				if err != nil {
					return nil, err
				}
				if err := rows.Err(); err != nil {
					return nil, err
				}
				return r, nil
			}

			sqlResult, err := conn.ExecContext(ctx, statement)
			if err != nil {