bulkinsert

问题 I want to get the default phone and SIM ACCOUNT_NAME and ACCOUNT_TYPE. On some devices, when I try to save a contact, it is not showing in the default Contact app of the device (like SONY or ASUS). It doesn't work when I try to pass null at ACCOUNT_NAME and ACCOUNT_TYPE, when saving the contact by bulk insertion. 回答1: Each device maker puts whatever it wants as the account type and name for the phone's phone-contacts, I've compiled a list for the major makers here: https://stackoverflow.com/a

问题 I want to get the default phone and SIM ACCOUNT_NAME and ACCOUNT_TYPE. On some devices, when I try to save a contact, it is not showing in the default Contact app of the device (like SONY or ASUS). It doesn't work when I try to pass null at ACCOUNT_NAME and ACCOUNT_TYPE, when saving the contact by bulk insertion. 回答1: Each device maker puts whatever it wants as the account type and name for the phone's phone-contacts, I've compiled a list for the major makers here: https://stackoverflow.com/a

问题 I want to get the default phone and SIM ACCOUNT_NAME and ACCOUNT_TYPE. On some devices, when I try to save a contact, it is not showing in the default Contact app of the device (like SONY or ASUS). It doesn't work when I try to pass null at ACCOUNT_NAME and ACCOUNT_TYPE, when saving the contact by bulk insertion. 回答1: Each device maker puts whatever it wants as the account type and name for the phone's phone-contacts, I've compiled a list for the major makers here: https://stackoverflow.com/a

问题 We are using Hibernate 4.2 as the backing library for JPA 2.0 entities. We have an entity like the following: @Entity public class MyEntity { .... @ElementCollection @MapKeyColumn(name = "key") @Column(name = "value") @CollectionTable("MyEntityMap") private Map<String, Integer> theMap; ... } The map potentially has thousands of entries. I have set hibernate.jdbc.batch_size=50 , but Hibernate still generates an insert statement for each entry in the map, when I say entityManager.persist

问题 We are using Hibernate 4.2 as the backing library for JPA 2.0 entities. We have an entity like the following: @Entity public class MyEntity { .... @ElementCollection @MapKeyColumn(name = "key") @Column(name = "value") @CollectionTable("MyEntityMap") private Map<String, Integer> theMap; ... } The map potentially has thousands of entries. I have set hibernate.jdbc.batch_size=50 , but Hibernate still generates an insert statement for each entry in the map, when I say entityManager.persist

问题 I am trying to import a text file, so the result would be just words in a seperate rows of one column. For example a text: 'Hello Mom, we meet again' should give 5 records: 'Hello' 'Mom,' 'we' 'meet' 'again' I tried to accomplish this with BULK INSERT with ROWTERMINATOR = ' ' , but there is a problem with treating new line as a terminator too and I get 'Mom,we' in one of the results. From what i know, there is no way to add a second ROWTEMRMINATOR to BULK INSERT (true?). What is the best way

问题 I'm currently trying to insert in batch many records (~2000) and Jooq's batchInsert is not doing what I want. I'm transforming POJOs into UpdatableRecords and then I'm performing batchInsert which is executing insert for each record. So Jooq is doing ~2000 queries for each batch insert and it's killing database performance. It's executing this code (jooq's batch insert): for (int i = 0; i < records.length; i++) { Configuration previous = ((AttachableInternal) records[i]).configuration(); try

问题 is there any way to get the values of affected rows using RETURNING INTO ? I have to insert the same rows x times and get the ids of inserted rows. The query looks like below: public static final String QUERY_FOR_SAVE = "DECLARE " + " resultId NUMBER ; " + "BEGIN " + " INSERT INTO x " + " (a, b, c, d, e, f, g, h, i, j, k, l, m) " + " values (sequence.nextVal, :a, :b, :c, :d, :e, :f, :g, :h, :i, :j, :k, :l) " + " RETURNING a INTO :resultId;" + "END;"; Now i can add thise query to batch, in

问题 is there any way to get the values of affected rows using RETURNING INTO ? I have to insert the same rows x times and get the ids of inserted rows. The query looks like below: public static final String QUERY_FOR_SAVE = "DECLARE " + " resultId NUMBER ; " + "BEGIN " + " INSERT INTO x " + " (a, b, c, d, e, f, g, h, i, j, k, l, m) " + " values (sequence.nextVal, :a, :b, :c, :d, :e, :f, :g, :h, :i, :j, :k, :l) " + " RETURNING a INTO :resultId;" + "END;"; Now i can add thise query to batch, in

问题 When I am adding 200 documents to ElasticSearch via one bulk request - it's super fast. But I am wondering if is there a chance to speed up the process with concurrent executions : 20 concurrent executions with 10 documents each. I know it's not efficient, but maybe there is a chance to speed up the process with concurrent executions? 回答1: Lower concurrency is preferable for bulk document inserts. Some concurrency is helpful in some circumstances — It Depends™ and I'll get into it — but is