oue's profile » case sensitive http://www.aspgod.com AI algorithm graphics programming blog Firefox ff Fri, 20 Jan 2012 16:59:45 +0000 en hourly 1 http://wordpress.org/?v=3.1.2 Case Sensitive SQL Query with SQL Server http://www.aspgod.com/sql-server/case-sensitive-sql-query-with-sql-server.html http://www.aspgod.com/sql-server/case-sensitive-sql-query-with-sql-server.html#comments Wed, 20 Jan 2010 04:13:33 +0000 aspgod http://www.aspgod.com/?p=414 Yet Another Related Posts Plugin.]]> ปกติแล้ว sql server ถ้าเรา select อะไรก็ตามแล้ว where name = ‘oue’ ผลลัพธ์ที่ได้มาก็จะมีทั้ง oue, Oue, oUe, ouE เพราะว่า default เป็น non Case Sensitive แต่ถ้าผมต้องการให้ query เฉพาะ ‘oue’ ล่ะจะทำอย่างไร ก็ทำตาม code ด้านล่างเลยครับ

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select *
from user
where nickname COLLATE Latin1_General_CS_AS = 'oue'

แค่นี้เอง สั้นๆง่ายๆ ครับ

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]]> http://www.aspgod.com/sql-server/case-sensitive-sql-query-with-sql-server.html/feed 0 string.Equals compare with string.Compare Asp.Net http://www.aspgod.com/aspnet/string-equals-compare-with-string-compare-asp-net.html http://www.aspgod.com/aspnet/string-equals-compare-with-string-compare-asp-net.html#comments Fri, 28 Aug 2009 02:54:18 +0000 aspgod http://www.aspgod.com/myprofile/?p=320 s2 then return 1 s1 < s2 [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.]]> When compare the string with not sure that the case of the string like (“aAa”, “aaa”, “AAA”). Normally I used the string.ToLower() to manage this problem but there’re many way to solved this. Look at my code below.

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string.Compare(s1, s2, true)

This function return integer.
s1 > s2 then return 1
s1 < s2 then return -1
s1 = s2 then return 0
The 3rd pamerater is the "ignoreCase" then set it true to non-case sensitive

Example

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string s1 = "aAa";
if (s1.Equals("aaa")) // false because the case sensitive
{
    // do something
}
else if (s1 == "aaa") // false because the case sensitive
{
    // do something
}
else if (string.Compare(s1, "aaa", true) == 0) // true enable non-case sensitive
{
    // do something
}

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