insert-update | 易学教程

SQL Server columnstore index update/insert in stored procedure

阅读更多关于 SQL Server columnstore index update/insert in stored procedure

问题 I was having fun testing out the columnstore index feature of sql server 2012. Because you can't update/insert tables with such indices I read on some options: keep a separate table and use a new partition for every bulk insert or disable the index, perform updates/inserts and then rebuild the index. For my test I chose the latter option and ended up with this stored procedure: -- Disable the columnstore index. ALTER INDEX [All_Columns_Columnstore_Index] ON [dbo].[Tick] DISABLE -- Insert data

Is JDBC multi-threaded insert possible?

阅读更多关于 Is JDBC multi-threaded insert possible?

问题 I'm currently working on a Java project which i need to prepare a big(to me) mysql database. I have to do web scraping using Jsoup and store the results into my database as well. As i estimated, i will have roughly 1,500,000 to 2,000,000 records to be inserted. In my first trial, i just use a loop to insert these records and it takes me one week to insert about 1/3 of my required records, which is too slow i think. Is it possible to make this process multi-threaded, so that i can have my

Use“ INSERT … ON DUPLICATE KEY UPDATE” to insert multiple records

阅读更多关于 Use“ INSERT … ON DUPLICATE KEY UPDATE” to insert multiple records

问题 My Table structure table: marks My objective: i want to insert or update multiple records with the condition i am currently check by this query 1st step SELECT * FROM `marks` WHERE `student` =115 AND `param` =1 2nd step if records found by matching above criteria i just update record by my new values else insert new record into my table It gonna working fine . but i want to reduce code and optimize this into single query . its possible or not ? I found this on MySQL docs INSERT ... ON

How to update a table from one server to another?

阅读更多关于 How to update a table from one server to another?

问题 I need to do an update from one server to another and could only get to the code that are below. I wanted to know where the mistake is. If separating the codes works perfectly. <?PHP $db_host1 = "10.0.0.101"; $db_user1 = "dns"; $db_password1 = "123456"; $db_name1 = "dns"; $db_connect1 = mysqli_connect($db_host1, $db_user1, $db_password1, $db_name1); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $db_host2 = "10.0.0.102"; $db_user2 = "dns"; $db

Is there a way to do an “INSERT…ON DUPLICATE KEY UPDATE” in Zend Framework 1.5?

阅读更多关于 Is there a way to do an “INSERT…ON DUPLICATE KEY UPDATE” in Zend Framework 1.5?

问题 I would like to use ON DUPLICATE KEY UPDATE in Zend Framework 1.5, is this possible? Example INSERT INTO sometable (...) VALUES (...) ON DUPLICATE KEY UPDATE ... 回答1: I worked for Zend and specifically worked on Zend_Db quite a bit. No, there is no API support for the ON DUPLICATE KEY UPDATE syntax. For this case, you must simply use query() and form the complete SQL statement yourself. I do not recommend interpolating values into the SQL as harvejs shows. Use query parameters. Edit: You can

PHP PDO simple insert or update function

阅读更多关于 PHP PDO simple insert or update function

问题 In trying to create a simple PHP PDO update function that if the field is not found would insert it, I created this little snippet. function updateorcreate($table,$name,$value){ global $sodb; $pro = $sodb->prepare("UPDATE `$table` SET value = :value WHERE field = :name"); if(!$pro){ $pro = $sodb->prepare("INSERT INTO `$table` (field,value) VALUES (:name,:value)"); } $pro->execute(array(':name'=>$name,':value'=>$value)); } It does not detect though if the update function is going to work with

Insert into h2 table if not exists

阅读更多关于 Insert into h2 table if not exists

问题 I am using H2. I want to insert a value into a table if it does not exist. I create the table with: CREATE TABLE IF NOT EXISTS $types (type VARCHAR(15) NOT NULL UNIQUE); And I want to do something like REPLACE INTO types (type) values ('type1'); I found an example about Replace that apparently works for MySQL but I am using h2. But I get an error when I run this from my h2 console: Syntax error in SQL statement "REPLACE[*] INTO TYPES (TYPE) VALUES ('expense') "; expected "ROLLBACK, REVOKE,

how to update table using api in codeigniter

阅读更多关于 how to update table using api in codeigniter

问题 I'm stuck at updating table row using api in codeigniter, i already have read tutorial from code tutsplus but there's no spesific to do it, so i tried by myself and got stuck :-( url request: http://localhost/work/bnilife/v1/signup/user/post?nopol=a1b2c3d4e5&username=agus&password=kucingtikus&captcha=c12ds Here's the json respon: { "error": "error :-( " } My Controller look like this below: public function user_post() { date_default_timezone_set('Asia/Jakarta'); $datestring ="%Y-%m-%d %H:%i:

Update using left join in netezza

阅读更多关于 Update using left join in netezza

问题 I need to perform a left join of two tables in netezza during an update. How can i achieve this ? Left join with three tables are working but not with two tables. UPDATE table_1 SET c2 = t2.c2 FROM table_1 t1 LEFT JOIN table_2.t1 ON t1.c1=t2.c1 LEFT JOIN table_3 t3 ON t2.c1=t3.c1 this works but UPDATE table_1 SET c2 = t2.c2 FROM table_1 t1 LEFT JOIN table_2.t1 ON t1.c1=t2.c1 this says like trying to update multiple columns. Thanks, Manirathinam. 回答1: When performing an UPDATE TABLE with a

update on duplicate key with JdbcBatchItemWriter

阅读更多关于 update on duplicate key with JdbcBatchItemWriter

spring Batch for my project, and I'm simply trying to read from a csv file and load data to a database, using JdbcBatchItemWriter as writer. I'm looking for a way to tell the writer to insert a new row, but, on duplicate key (or duplicate unique identifier) update row instead of failing. I know I can do that directly in the sql statement, but that would be specific to Mysql, though I want my code to be DBMS-independent. here is my writer declaration in the java config @Bean @StepScope public ItemWriter<Person> writerHeadingCollectionsToDb(DataSource datasource) { String sqlStatement = "INSERT