sql查詢，通配符，MS SQL SERVER 2005

Question

我需要查詢以提取所有具有以下前綴“ site / test / test /”的DirName，這是正確的語法“ *”

SELECT  DirName, count(*) AS FileCount, SUM(Size)/1024 as 'SizeKB' 
FROM  alldocs
Where DirName = 'site/test/test/*'
GROUP BY  dirName 
ORDER BY DirName

Answer 1

您需要使用SQL的LIKE子句：

SELECT  DirName, count(*) AS FileCount, SUM(Size)/1024 as 'SizeKB' 
FROM  alldocs
Where DirName LIKE 'site/test/test/%'
GROUP BY  dirName 
ORDER BY DirName

參見http://www.sql-tutorial.net/SQL-LIKE.asp

Answer 2

您正在使用MySQL嗎？ 如果是這樣，您可以在類似

SELECT  DirName, count(*) AS FileCount, SUM(Size)/1024 as 'SizeKB' 
FROM  alldocs
Where LEFT( DirName, LENGTH( 'site/test/test/' ) ) = 'site/test/test/'
GROUP BY  dirName 
ORDER BY DirName