另外, contains包含的列都必须来自同一个表, 不能跨表, 例如where contains(a.ProductDesc, b.ProductName, '*cad*'), 这样是不行的. 3.Lucene全文检索 SQL server全文检索不灵了, 只能找第三方的方案了, 首当其冲的就是Lucene了, 但在.net下, Lucene却很不顺当. NLucene是将 Lucene 从 Java 移植到...
The wildcard functionality in SQL applies to all vendors of SQL (e.g. Oracle, SQL Server, MySQL, PostgreSQL). It allows you to do partial matching on a string and is a useful feature of SQL.
SQL Server 2008 R2 (10.50.x) and SQL Server 2008 R2 (10.50.x) Native Client (SNAC) support wildcard certificates. SNAC has since been deprecated and replaced with the Microsoft OLE DB Driver for SQL Server and Microsoft ODBC Driver for...
这一部分简要概述了 SQL Server 2005 中增加的新的 XML 支持,它是通过.NET 框架 V2.0 中的支持和本机客户端数据访问(如 OLE DB)进行补充的。XML 数据类型XML 数据模型具有一些特性,这些特性使得映射到关系数据模型非常困难,如果不是完全不可能的话。XML 数据具有可以递归的层次结构;关系数据库提供对层次数据(...
This is an improvement over SQL Server 2000, which uses a guess for selectivity when any wildcard other than a trailing wildcard % is used in the LIKE pattern, and it has limited accuracy in its estimates in that case. The String Index field in the first row set returned by DBCC SHOW...
file_offsetbigintThe offset of the block in the file that contains the event. Not nullable. timestamp_utcdatetime2(7)The date and time (UTC timezone) of the event. Not nullable. Applies to: SQL Server 2017 (14.x) and later versions, and Azure SQL Database. ...
SQL Server Azure SQL Database This argument must include both a path (drive letter or network share) and a file name that can include a wildcard. A single asterisk (*) can be used to collect multiple files from an audit file set. For example: ...
The following example searches for the rows in which the LargePhotoFileName column has the characters green_, and uses the ESCAPE option because _ is a wildcard character. If you don't specify the ESCAPE option, the query searches for any description values that contain the word green followe...
Accept wildcard characters:False -DatabaseName Specifies the name of the database that contains the view. If you run this cmdlet in the context of a database or a child item of a database, the cmdlet ignores this parameter value. Specify theIgnoreProviderContextparameter for the cmdlet to ...
This is useful when a script contains many INSERT statements that may contain strings that have the same format as variables, such as $(variable_name). Expand table Type: SwitchParameter Position: Named Default value: None Required: False Accept pipeline input: False Accept wildcard characters:...