In this section, we describe how to perform operations basic to ClusterJ applications, including the following: Creating new instances, setting their properties, and saving them to the database Performing primary key lookups (reads) Updating existing rows and saving the changes to the database ...
If you use an ORDER BY clause, it is the last clause in the SQL statement. An ORDER BY clause contains a list of the fields that you want to use for sorting, in the same order that you want to apply the sort operations. For example, suppose that you want your results s...
DimvowelNames2 =FromstudentInstudentsJoinvowelInvowelsOnstudent.Last(0)EqualsvowelSelectName = student.First &" "& student.Last, Initial = vowelOrderByInitial SQL のLEFT JOINのように、複数のコレクションを結合して 1 つの階層コレクションにするには、Group Joinを使用します。 詳細については...
Provides steps for showing properties such as SQL comments, parameter lists, and Top specification. How to: Create Queries using Something Besides a Table Provides steps for creating queries that use table-valued objects, such as table-valued functions and views. How to: Show Column Names in the...
Both simple and bracketed comments can be used in an SQL query. Simple comments are introduced with two consecutive hyphens (--) and end with the end of a line. Simple comments cannot be continued to the next line. Bracketed comments are introduced with /* and end with */. Bracketed comm...
Only insert, delete, or update operations can activate a trigger. The activation of a trigger might cause trigger cascading.Trigger cascading is the result of the activation of one trigger that executes SQL statements that cause the activation of other triggers or even the same trigger again. Th...
Basic Query Operations (Visual Basic)中讨论了每个查询表达式子句的具体功能和用途。 有关详细信息,请参阅查询。 请注意,在 LINQ 中,查询定义通常存储在变量中,并在稍后执行。 查询变量(如上例中的evensQuery)必须是可查询类型。evensQuery的类型为IEnumerable(Of Integer),由编译器使用本地类型推理进行赋值。
SqlDatabaseMetricDefinition SqlDatabaseMetricValue SqlDatabaseOperations SqlDatabaseOperations.DefinitionStages SqlDatabaseOperations.DefinitionStages.Blank SqlDatabaseOperations.DefinitionStages.WithAllDifferentOptions SqlDatabaseOperations.DefinitionStages.WithAuthentication SqlData...
The following example shows the basic operations that you can perform with a collection. usingMySqlX.XDevAPI;usingMySqlX.XDevAPI.Common;usingMySqlX.XDevAPI.CRUD;usingSystem;namespaceMySQLX_Tutorial{classProgram{staticvoidMain(string[]args){stringschemaName="world_x";stringconnectionURI="mysqlx://...
Write code to perform basic operations with the SharePoint .NET Framework client object model (CSOM).