SQL Server 資料庫引擎會處理各種資料儲存結構上的查詢,例如本機資料表、資料分割資料表,以及分散到多部伺服器的資料表。 下列各節涵蓋 SQL Server 如何處理查詢,以及透過執行計畫快取來將查詢重複使用最佳化。執行模式SQL Server 資料庫引擎可以使用兩種不同的處理模式來處理 Transact-SQL 陳述式:...
Because SQL Server collations use different comparison rules for non-Unicode and Unicode data, you see different results for comparisons of the same data, depending on the underlying data type.For example, if you're using the SQL collation SQL_Latin1_General_CP1_CI_AS, the non-...
SQL Server Azure SQL 数据库 Azure SQL 托管实例 可以使用 SQL Server Management Studio 或 Transact-SQL 在 SQL Server、Azure SQL 数据库和 Azure SQL 托管实例中创建已分区表或索引。 已分区表和已分区索引的数据水平分为若干单元,可分布于一个数据库中的多个文件组中,或存储于单个文件组中。 分区可以使大...
這是參考檔案時,SQL Server 中使用的邏輯名稱。Logical_file_name在資料庫中必須是唯一的,且必須符合識別碼的規則。 名稱可以是字元或 Unicode 常數,或是一般識別碼或分隔識別碼。 FILENAME { 'os_file_name' | 'filestream_path' } 指定作業系統 (實體) 檔案名稱。
how to fix "cannot convert between unicode and non-unicode string data types" :/ How to fix this problem? RPC server error. Connect SSIS on another server How to flush cache memory using SSIS? How to generate NewID() in using SSIS Derived Column? How to Generate Row Number in SSIS Pack...
Cursors vs while loop Customize email message - SQL Server Agent Data Archiving/Purging process Data conversion from non-unicode character to unicode character Data Pump Data Truncated using FOR XML PATH Data type equivalent in T-SQL for the CLOB data type in PL-SQL - SQL Server 2012 and supe...
Seethe SQL developer tutorialto develop an app with C#, Java, Node.js, PHP, Python and R with SQL Server databases. Version 1.9.0 Release date: March 5, 2019 Release status: GA What's new in 1.9.0 Added new Query History feature ...
The easiest way to manage character data in international databases is always to use the Unicodenchar,nvarchar, andnvarchar(max)data types, instead of their non-Unicode equivalents:char,varchar, andtext. That way, clients will see the same characters in the data as all other clients. If all ...
Use Unicode native format for bulk transfer of data between instances of SQL Server, which eliminates conversion of data types to and from character format.
java.sql.SQLException: Illegal mix of collations (utf8mb4_unicode_ci,IMPLICIT) and (gb18030_chinese_ci,COERCIBLE) for operation 'like' jdbc url parameter: useUnicode=true&characterEncoding=utf-8&useSSL=false&allowPublicKeyRetrieval=true&useLegacyDatetimeCode=false&serverTimezone=GMT%2b8 ...