一、條件篩選
1、數(shù)字篩選：sql = "Select * from [sheet1$] Where 銷(xiāo)售單價(jià) > 100"
2、字符條件：sql = "Select * from [sheet1$] Where 物品名稱(chēng) ='擋泥板'"
3、日期條件：sql = "Select * from [sheet1$] Where 物品名稱(chēng) ='擋泥板'"
4、區(qū)間條件：sql = "Select * from [sheet1$] Where 出庫(kù)日期 between #2005-1-4# and #2005-1-10#"
5、多個(gè)條件：用and,OR連接
'sql = "Select * from [sheet1$] Where 出庫(kù)日期 between #2005-1-4# and #2005-1-10# and 銷(xiāo)售單價(jià)>100"
6、模糊條件：%表示任意多個(gè)字符,_(下劃線)表示單個(gè)占位符
'sql = "Select * from [sheet1$] Where 物品名稱(chēng) like '%扶手%'"
7、插入變量查詢(xún):
'sr = "擋泥板"
'sql = "Select * from [sheet1$] Where 物品名稱(chēng) ='" sr "'"
8、在字符串組里：
'sql = "Select * from [sheet1$] Where 物品名稱(chēng) in('車(chē)衣','扶手箱')"
9、借用函數(shù)優(yōu)化：
'sql = "Select * from [sheet1$] Where left(物品代碼,3)='028'"
二、指定篩選
1、篩選全部字段:*表示全部字段
'sql = "Select * from ChuKu"
2、篩選指定字段：在from前面列出要顯示的所有字段,如果要跳過(guò)的用""""
'sql = "Select """",出庫(kù)日期,"""",物品代碼,"""",規(guī)格,單位 from ChuKu"
3、篩選不重復(fù)的：Distinct 字段名 篩選不重復(fù)的記錄
'sql = "Select Distinct """",物品代碼 from ChuKu"
4、按百分比篩選:Top N percent 可以顯示前百分之N的記錄
'sql = "Select top 30 Percent * from ChuKu"
'對(duì)篩選的字段用函數(shù)進(jìn)行進(jìn)一步的處理和格式化
'sql = "Select ID,Format(出庫(kù)日期,""yyyy-mm-dd"") from ChuKu"
5、排序:Desc降序,Asc升序
'sql = "Select * from ChuKu Order by 出庫(kù)日期 asc,銷(xiāo)售單價(jià) desc"
'sql = "Select Top 10 * from ChuKu Order by 出庫(kù)日期 asc,銷(xiāo)售單價(jià) desc" '篩選銷(xiāo)售數(shù)量前10()
三、分組顯示
Group by 可以配合函數(shù)進(jìn)行分組求和,分組求最大值等。
'sql = "Select """","""",物品代碼,"""","""","""",sum(出庫(kù)數(shù)量) from ChuKu group by 物品代碼" ' 跳過(guò)的用""""
按條件顯示分組記錄
'sql = "Select """","""",物品代碼,"""","""","""",sum(出庫(kù)數(shù)量) from ChuKu group by 物品代碼 HAVING sum(出庫(kù)數(shù)量)>=3"
以上所述是小編給大家介紹的MySql數(shù)據(jù)庫(kù)中Select用法小結(jié)，希望對(duì)大家有所幫助，如果大家有任何疑問(wèn)請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！
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