一般而言,您必須聯結 CONTAINSTABLE 或 FREETEXTTABLE 的結果與基底資料表。 若要加入資料表,您必須知道唯一索引鍵資料行名稱。 這個資料行 (出現在每個啟用全文檢索的資料表中) 用來強制資料表的唯一資料列 (unique**key column)。 如需索引鍵資料行的詳細資訊,請參閱建立及管理全文檢索索引。
適用於:SQL Server Azure SQL 資料庫 Azure SQL 受控執行個體使用述詞 CONTAINS 和FREETEXT 以及具有 SELECT 陳述式的資料列集值函式 CONTAINSTABLE 和FREETEXTTABLE,以撰寫全文檢索查詢。 本文提供每個述詞和函式的範例,並協助您選擇最適合的來使用。若要比對單字和片語,請使用 CONTAINS 和CONTAINSTABLE。 若要比對意...
The number of unique plans that can be stored for a query in the plan store is limited by themax_plans_per_queryconfiguration option. To enhance performance, the information is written to the stores asynchronously. To minimize space usage, the runtime execution statistics in the runtime stats...
keys. EF has always been reliant on keys, so this is a big step for EF Core. Additionally, the query type will help you avoid any interaction with the change tracker, so you don’t have to add in code to protect your application from inadvertent runtime exceptions related to entities ...
Summary:Microsoft SQL Server 2008 collects statistical information about indexes and column data stored in the database. These statistics are used by the SQL Server query optimizer to choose the most efficient plan for retrieving or updating data. This paper describes what data is collected, where ...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
Fields in unique-values queries and unique-records queriesThe values in such queries are summarized. Some of the values represent a single record, and others represent more than one record. The update operation is not possible because it is not possible to determine what records were excluded as...
"System.Int64". Error: "Input string was not in a correct format "System.Object[]" "telnet" connection test to different servers on different ports "Unable to find a default server with Active Directory Web Services running" when calling a script with Import-module AD "Unable to process the...
It should be possible for # Oracle as well, but the semantics for extracting the primary keys is # trickier so it's not done yet. assert batch_size is None or batch_size > 0 # Check that the parents share the same concrete model with the our # model to detect the inheritance ...
In ClojureScript, custom query functions and aggregates should be passed as source instead of being referenced by symbol (due to lack of resolve in CLJS) Custom aggregate functions are called via aggregate keyword: :find (aggregate ?myfn ?e) :in $ ?myfn Additional :db.fn/retractAttribute ...