Table of Contents
How to execute raw SQL in Entity Framework?
Executing Raw SQL Queries 1 DbSet.FromSqlRaw link. The DbSet must be included in the model (i.e. 2 Parameterized Queries link. 3 Stored Procedures link. 4 Non-Entity Types and Projections link. 5 Database.ExecuteSqlCommand link. 6 Leveraging ADO.NET via the Context.Database property link. …
When to use rawsql to fetch other parts of the graph?
When using RawSql we can use fetchQuery to fetch other parts of the object graph. That is, we are using RawSql for the “root” or “origin” query and can use fetchQuery to fetch other related parts of the graph.
Can a rawsql be declared as a static final?
With unparsed RawSql we explicitly specify the SQL to use and explicitly map columns to properties. The SQL can contain positioned parameters with? or named parameters like :foo . The RawSql instance is immutable and safe for multi-threaded use and can be declared as a static final .
Which is better to query rawsql or findnative?
Note that findNative is preferred over RawSql. findNative uses automatic mapping of columns to properties and is nicer and simpler to use. We really only need to use RawSql when we hit one of the limitations of findNative. With unparsed RawSql we explicitly specify the SQL to use and explicitly map columns to properties.
How to execute raw SQL query in Entity Framework 6?
Use the DbSet.SqlQuery () method to write raw SQL queries which return entity instances. The resulted entities will be tracked by the context, as if they were returned by the LINQ query. The above query executes Select * from Students SQL in the database to get all students and will be converted into a list of Student entities.
How to execute a delete query in Ebean?
Return a copy of the query. Execute as a delete query deleting the ‘root level’ beans that match the predicates in the query. Execute as a delete query returning the number of rows deleted using the given transaction. Execute the query returning true if a row is found.
How to query beans in Ebean 11.35.3?
Execute using “for update” clause which results in the DB locking the record. Execute using “for update” clause with “no wait” option. Execute using “for update” clause with “skip locked” option. Return the type of beans being queried.
When using RawSql we can use fetchQuery to fetch other parts of the object graph. That is, we are using RawSql for the “root” or “origin” query and can use fetchQuery to fetch other related parts of the graph.