2014-04-03 73 views
0

是否有任何可能性,MySQL的选择查询返回字符串大写?sql选择查询返回大写

例如为了获得所选择的查询字段必须返回小写字母会做

SELECT LCASE(name) FROM Person; 

这将由方式返回

name 
------- 
mark miguel 
john 
james 
... 

,我有一个表命名Person和现场name得到了大写的所有值...

name 
------- 
MARK MIGUEL 
JOHN 
JAMES 
... 

我的问题是,是否有一个选择查询与LCASE()具有相同的功能,只返回大写?例如返回的值将如下所示?

name 
------- 
Mark Miguel 
John 
James 
... 
+0

通过 “资本” 你的意思是[标题案例](http://en.wikipedia.org/wiki/Title_case#Title_case) ? –

+0

看看[这个SO问题](http://stackoverflow.com/questions/12364086/how-can-i-achieve-initcap-functionality-in-mysql)。 – collapsar

+0

是的......类似的东西......就像一个单词的第一个字母是大写字母,其余都是小写字母...... – gadss

回答

1

使用功能

DROP FUNCTION IF EXISTS proper; 
SET GLOBAL log_bin_trust_function_creators=TRUE; 
DELIMITER | 
CREATE FUNCTION proper(str VARCHAR(128)) 
RETURNS VARCHAR(128) 
BEGIN 
    DECLARE c CHAR(1); 
    DECLARE s VARCHAR(128); 
    DECLARE i INT DEFAULT 1; 
    DECLARE bool INT DEFAULT 1; 
    DECLARE punct CHAR(18) DEFAULT '()[]{},.-_\'[email protected];:?/'; -- David Rabby & Lenny Erickson added \' 
    SET s = LCASE(str); 
    WHILE i <= LENGTH(str) DO -- Jesse Palmer corrected from < to <= for last char 
    BEGIN 
     SET c = SUBSTRING(s, i, 1); 
     IF LOCATE(c, punct) > 0 THEN 
     SET bool = 1; 
     ELSEIF bool=1 THEN 
     BEGIN 
      IF c >= 'a' AND c <= 'z' THEN 
      BEGIN 
       SET s = CONCAT(LEFT(s,i-1),UCASE(c),SUBSTRING(s,i+1)); 
       SET bool = 0; 
      END; 
      ELSEIF c >= '0' AND c <= '9' THEN 
      SET bool = 0; 
      END IF; 
     END; 
     END IF; 
     SET i = i+1; 
    END; 
    END WHILE; 
    RETURN s; 
END; 
| 
DELIMITER ; 
select proper("d'arcy"); 
+------------------+ 
| proper("d'arcy") | 
+------------------+ 
| D'Arcy   | 
+------------------+ 

看到http://www.artfulsoftware.com/infotree/queries.php#122