You saw in Part 1, Figure 13 that the cn attribute type has a field called substr, which defines the matching rules for substring match.
在第1部分的图13可以看到，cn属性类型有一个叫做SUBSTR的字段，它定义了子字符串匹配的匹配规则。
Mask column 3 by entering the following in the field that contains COL3: SUBSTR (COL3, 1, 5).
通过在包含COL3的字段中输入下面的内容可以屏蔽列3：substr (COL3,1,5)。
Functions like SUBSTR and LENGTH work with characters when called in conjunction with UCS-2 data types.
当用ucs - 2数据类型调用时，SUBSTR和LENGTH等函数处理字符。
An implementation like that makes use of the fact that functions like SUBSTR and LENGTH still work correctly on the GRAPHIC data type.
SUBSTR和LENGTH等函数仍然可以正确地处理GRAPHIC数据类型，所以这样的实现是有效的。
In combination with the data types that use UTF-8 encoding, functions like SUBSTR and LENGTH still work with bytes and not with characters.
在与使用UTF - 8编码的数据类型结合使用时，SUBSTR和LENGTH等函数仍然处理字节而不是字符。
In combination with the data types that use UTF-8 encoding, functions like SUBSTR and LENGTH still work with bytes and not with characters.
在与使用UTF - 8编码的数据类型结合使用时，SUBSTR和LENGTH等函数仍然处理字节而不是字符。
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