CONTAINS 是在 Transact-SQL SELECT 陳述式的 WHERE 子句中使用的述詞,可在包含字元型資料類型的全文檢索索引資料行上執行 SQL Server 全文檢索搜尋。CONTAINS 可以搜尋下列項目:單字或片語。 單字或片語的前置詞。 接近另一個單字的單字。 從另一個單字變化產生的單字 (如 drive 這個字是 drives、drove、driving...
WHILE 1 = 1 BEGIN DELETE TOP (1000) FROM MySalesOrderHeader WHERE OrderDate < '20030101' IF @@rowcount < 1000 BREAK END SQL Server optimizes such code much more efficiently than it can with the SET ROWCOUNT option. You can now drop the MySalesOrderHeader table: ...
表示可同时由多个线程访问的键/值对的线程安全集合。C# 复制 public class ConcurrentDictionary<TKey,TValue> : System.Collections.Generic.ICollection<System.Collections.Generic.KeyValuePair<TKey,TValue>>, System.Collections.Generic.IDictionary<TKey,TValue>, System.Collections.Generic.IEnumerable<System....
Sign in We're no longer updating this content regularly. Check theMicrosoft Product Lifecyclefor information about how this product, service, technology, or API is supported. Return to main site Dismiss alert GroupBy(TSource, TKey, TElement) Method (IQueryable(TSource), Expression(Func(TSource...
. :: . .Contains(String) Determines whether the collection contains an element that has the specified name. IMetadataCollection< (Of < <' (IMetadataObject> ) > > ). . :: . .Contains(IMetadataObject) Determines whether the collection contains an element that has the specified name. 上層 ...
SQL Server returns errors when duplicate names appear in the FROM clause. table_or_view_name The name of a table or view. If the table or view exists in another database on the same instance of SQL Server, use a fully qualified name in the form database.schema.object_name. If the ...
Assign empty string '' if datetime is null Assign EXEC output to Variable Assigning NULL value to column name using Case Statement of where is SQL SERVER 2008 atomic if not exists() and insert or update Attempt to fetch logical page (1:155534) in database 7 failed. It belongs to allocati...
Styles 1 and 2 introduce new functionality. These styles convert a hex string literal to a binary value that contains the same digits when presented in hex form and vice versa. If you use Style 1 when converting from a character string to a binary value, the input character string should ...
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Can be used to match any single character. "|" can be used to match either of the two strings REGEXP can be used to match the input characters with the database. Example: The following statement retrieves all rows where column employee_name contains the text 1000 (example salary): 84)...