有没有办法在node.js pg中锁定表

Question

运行node.js pg并且CTE upsert语句出现死锁问题。我在尝试运行查询语句时遇到了死锁。我想知道是否有办法锁定表（在node.js pg中），以便我不会遇到这个问题。

pg.connect(constring, function(err, client, done) {

            if(err) { console.error('Error (updateHapiActivities: human_api_activities__c)           connecting to DB ... : ' + err );
                    } else {
                            var queryConfig = "WITH upsert AS (UPDATE salesforce.human_api_activities__c SET calories__c = ($1), distance__c = ($2), steps__c = ($3), id__c = ($4), updatedat__c = ($5) WHERE userid__c = ($8) AND $
                            client.query(queryConfig, [new_cal, new_dis, new_step, wearable_id, update_time, date, create_time, user_id, source], function(err, result) {
                                    if(err) { console.error('Error (updateHapiActivities: human_api_activities__c) updating query ... : ' + err);
                                    } else {
                                            var devArr = result.rows;
                                            client.end();
                            }); // end upsert query
                    }       // end else
            }); // end connection

我尝试了一个client.query（“BEGIN;”）...然后在client.query之后（“LOCK表IN SHARE ROW EXCLUSIVE”......但是LOCK TABLE错误输出只能用于交易块。

任何帮助？