I need to update two tables inside a single transaction. The individual queries look something like this:
I\'m doing an insert query where most of many columns would need to be updated to the new values if a unique key already existed. It goes something like this:
A have a JPA entity that has timestamp field and is distinguished by a complex identifier field. What I need is to update timestamp in an entity that has already been stored, otherwise create and stor
I have a question regarding performance of SQL Server. Suppose I have a table persons with the following columns: id, name, surname.
I need to be able to change the primary keys in a table.The problem is, some of the keys will be changing to existing key values. E.g. record1.ID 3=>4 and record2.ID 4=>5.I need to开发者_开发百科 keep
I am using EntityFramework. I have an \"Application\" object (which has a field certificateReasonID) which can have one or zero CertificateReasons - so there is a ralationship to the \"CertificateReas
I have a table with col开发者_开发问答umns record_id (auto inc), sender, sent_time and status.
I\'m developing a WPF application (.NET 3.5SP1).开发者_C百科 The scenario is this: 1.using SQL Metal to extract the entity definitions (and the corresponding map file), which were afterwards used for
I am newbie at using DataSet. I am writing a program with VB.NET, there I have to select data from one table. Then I have to update about 4 tables and insert to 2 Tables. Which approach will be ok for
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