所以如果list是常量,则可以直接用IN, 否则要用find_in_set()函数。 也就是这两个sql是查询的效果是相同的: 1 2 SELECT*fromC_PURCHASINGMASTERDATAwhereFIND_IN_SET(EKGRP,'C54,C02,C14,C60,C06,C61,C53,C51,C12,C08,C03,C07') SELECT*fromC_PURCHASINGMASTERDATAwhereEKGRPin('C54','C02','C14','C...
SQL codeselect count(*) as cnt,week(editdate) as weekflg from projects where year(editdate) =2007 group by weekflg 每月 SQL codeselect count(*) as cnt,month(editdate) as monthflg from projects where year (editdate)=2007 group by monthflg 每天 SQL codeselect count(*) as cnt from pr...
typeSpec 类型:Microsoft.SqlServer.Management.SqlParser.Metadata. . :: . .DataTypeSpec TheDataTypeSpecobject that represents the built-in type specification. precision 类型:System. . :: . .Int32 The precision of the data type. scale 类型:System. . :: . .Int32 ...
在 MySQL 4.1 之后的版本中,可以通过设置 max_length_for_sort_data 参数来控制 MySQL 选择第一种排序算法还是第二种。当取出的所有大字段总大小大于 max_length_for_sort_data 的设置时,MySQL 就会选择使用第一种排序算法,反之,则会选择第二种。为了尽可能地提高排序性能,我们自然更希望使用第二种排序算法,所以...
dbForge Search delivers the fastest and simplest way to find the required table data across multiple SQL Server databases. Just enter your search query and get the results within seconds. Learn more... Features 1 / 8 Text Search You can find an objectby namein a SQL Server database, and...
使用like可能查到我们不想要的记录，它比like更精准，这时候mysql的FIND_IN_SET函数就派上用场了，...
[tank@localhost workspace]$ find ./database/ -name '*.sql' -print #查找以sql结尾的文件./database/28toplearning.sql[tank@localhost workspace]$ find ./database/ -name '*.sql*' -print #查找文件名包括sql文件./database/28toplearning.sql[tank@localhost workspace]$ find ./data...
Find(DataTypeSpec, Int32, Int32) Retrieves the ISystemDataType object that has the specified data type specification, precision, and scale. 上層 請參閱 參考 SystemDataTypeLookupBase 類別 Microsoft.SqlServer.Management.SqlParser.MetadataProvider 命名空間中文...
[<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 name not found and no default driver specified [ODBC SQL Server Driver] Invalid Parameter...
Prequential Evaluation - IndexError: index 0 is out of bounds for axis 0 with size 0 How to position CAShapeLayer in a UIView How can I access the first attempt's yarn log? What sql data type should I use to store execution time in milliseconds?