The substr function returns a part of a string.
函数地作用是：返回子字符串可以。
SUBSTR calculates lengths using characters as defined by the input character set.
和substr差不错，不过就是在计算偏移量的时候，有差异，substr是以字符为单位。
This explains the use of substr (text, match [0], match [1]) in the last line of code.
这解释了最后一行代码中substr (text,match [0]，match[1])的使用。
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。
I'm choosing to use the strip_tags and substr functions to remove all HTML tags from the search term and to cut it down to size.
我选择使用strip _ tags和substr函数来删除搜索词内的所有HTML标记并对之进行简化。
Tie::CharArray is in fact a very good way to forget about the particulars of the Perl substr() or pack()/unpack() or split() functions.
CharArray实际上是不考虑有关Perl 中substr()或pack() /unpack()或者split()函数的细节的极佳办法。
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。
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。
I cheated and discovered that there was a comma in position4 of every row in the table that's how I knew to use a three character length in my SUBSTR.
我讨了个巧并发现表中每行的第4位是一个逗号，这就是为什么我知道在SUBSTR中使用一个三位字符长度。
I cheated and discovered that there was a comma in position 4 of every row in the table that's how I knew to use a three character length in my SUBSTR.
我讨了个巧并发现表中每行的第4位是一个逗号，这就是为什么我知道在SUBSTR中使用一个三位字符长度。
People have used many methods to make the cathode, in recent years, the film-cathode method that coated with the films of other materials on the substr.
目前阴极的实现方案很多，其中在材料基底上敷膜的薄膜阴极的方法既可利用基底本身的物理、结构特性，又可利用膜材料的物理化学性能，是一种有效的提高阴极性能的方法。
Length of a string variable: Input argument for the SUBSTR function, which determines the desired length of the resulting string or output of the length function.
字符串变量的长度：substr函数的输入参数，决定了结果字符串的期望长度或length函数的输出。
You could simulate an array by passing one or more varchar (255) fields with comma-separated values and then use a WHILE loop with PATINDEX and SUBSTR to extract the values.
你可以使用几个VARCHAR(255)字段来模拟数组，字段中用逗号分开各个数据，然后使用循环和PATINDEX和SUBSTR分开这些数据。
You could simulate an array by passing one or more varchar (255) fields with comma-separated values and then use a WHILE loop with PATINDEX and SUBSTR to extract the values.
你可以使用几个VARCHAR(255)字段来模拟数组，字段中用逗号分开各个数据，然后使用循环和PATINDEX和SUBSTR分开这些数据。
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