使用Oracle 11g PL/SQL限制双引号之间的字符数

我需要一种方法，使用Oracle11gPL/SQL对双引号内的每一组数据应用32个字符的子字符串限制

基本上使用以下按原样提供给我的示例字符串，因为我无法控制此字符串的构造方式：

str := ‘"AAAAAAA BBBBBBB CCCCCCC DDDDDD1","AAAAAAA BBBBBBB CCCCCCC DDDD",”QWERTY”,”N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1”’;

我需要遍历每个双引号之间的每组值，例如（“QWERTY”），并对找到的每个分组应用一个32的子字符串

因此，使用上面的字符串示例，我需要执行以下操作：

str := ‘"substr(‘AAAAAAA BBBBBBB CCCCCCC DDDDDD1’,1,32)","substr(‘AAAAAAA BBBBBBB CCCCCCC DDDD’,1,32)",”substr(‘QWERTY’,1,32)”,”substr(‘N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1’,1,32)”’;

因此，最后，我对str的最终结果将由四个分组组成，其中每个分组的长度小于或等于32。

您可以使用

模式说明：

"               --matches a double quote
([^"]{1,32})    --matches a group of 1 to 32 characters, containing anything other than double quotes.
                --surrounded by brackets, to form the first capture group.
[^"]*           --matches zero or more characters other than double quotes
"               --matches a double quote

：

|                                                                                                              STR | REGEXP_REPLACE(STR,'"([^"]{1,10})[^"]*"','"\1"') |
|------------------------------------------------------------------------------------------------------------------|--------------------------------------------------|
| "AAAAAAA BBBBBBB CCCCCCC DDDDDD1","AAAAAAA BBBBBBB CCCCCCC DDDD","QWERTY","NoN1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1" |  "AAAAAAA BB","AAAAAAA BB","QWERTY","NoN1N1N1N1" |

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它与SQL表有什么连接？我不确定您是否可以使用PL/SQL来拆分字符串。也许是正则表达式？不确定。抱歉-可以使用PL/SQL-将更新我的问题。正是我需要的-你让它看起来很简单。谢谢

with x(str) as (
select '"AAAAAAA BBBBBBB CCCCCCC DDDDDD1","AAAAAAA BBBBBBB CCCCCCC DDDD","QWERTY","NoN1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1"' str
from dual
)
select str,
regexp_replace(str,'"([^"]{1,10})[^"]*"','"\1"')
from x

|                                                                                                              STR | REGEXP_REPLACE(STR,'"([^"]{1,10})[^"]*"','"\1"') |
|------------------------------------------------------------------------------------------------------------------|--------------------------------------------------|
| "AAAAAAA BBBBBBB CCCCCCC DDDDDD1","AAAAAAA BBBBBBB CCCCCCC DDDD","QWERTY","NoN1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1N1" |  "AAAAAAA BB","AAAAAAA BB","QWERTY","NoN1N1N1N1" |