Sql返回价值,甚至如果条件包含大写字母

代码示例

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funktion低/sql上

LOWER/UPPER
LOWER wandelt eine String in eine in Kleinbuchstaben um. 
UPPER ist das Gegenstück zu LOWER, und wandelt den String 
in Grossbuchstaben um.

SELECT LOWER (expression)

SELECT UPPER (expression)

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