问题
I bet it's totaly simple and i just don't see it, but i don't get it ..
I execute the following command in DB2 command line processor:
DB2 LOAD FROM "DB_ACC_PASS_REGEXP.del" OF DEL METHOD P (1, 2, 3, 4, 5) MESSAGES "DB_ACC_PASS_REGEXP.del.msg" INSERT INTO DB_ACC_PASS_REGEXP (APP_ID,APREGEXP,EXPLAIN_TEXT,ID,OPT_KZ) NONRECOVERABLE INDEXING MODE REBUILD
Which loads the Data specified in following File into the database.
1,"[a-z]",,1,0
1,"[A-Z]",,2,0
1,"[0-9]",,3,0
1,"[!|\"|§|$|%|&|/|(|)|=|?|`|´|*|+|~|'|#|-|_|.|:|,|;|µ|<|>| |°|^]",,4,0
^Here is the Problem
The Problem is, that only 3 of these 4 inserts will be accepted. The last one will be rejected, because DB2 Load doesn't notice the escape character before the double quotation mark.
if I change the last line to:
1,"[!|x|§|$|%|&|/|(|)|=|?|`|´|*|+|~|'|#|-|_|.|:|,|;|µ|<|>| |°|^]",,4,0
^Here is the changed character
there is no problem ..
WHY doesn't the escape character "\" work??
edit Okay.. I just tryed it the oracle way now and that works ... I escape " with another " so my Line looks like
1,"[!|""|§|$|%|&|/|(|)|=|?|`|´|*|+|~|'|#|-|_|.|:|,|;|µ|<|>| |°|^]",,4,0
But that's only a way to do it .. That doesn't explain why IBM offers the Backslash as an escape character (http://pic.dhe.ibm.com/infocenter/db2luw/v9r7/index.jsp?topic=%2Fcom.ibm.db2.luw.admin.cmd.doc%2Fdoc%2Fr0008305.html)
回答1:
Using LOAD with ascii / delimited files requires to tune the file type modifiers (look on Table 6 and Table 8 of the docu page you linked). I am not quite sure, but I can't remember using backslash as escape character in DB2.
You can either use another character delimiter as double quotes with chardel option or force no character delimiter with nochardel option.
BUT ...
In your case you need special characters as regular expressions, so you will always need to escape " with "" and ' with ''. I think there is no other way to get this working.
来源：https://stackoverflow.com/questions/21984132/db2-load-from-delimitited-files-escape-in-fields-doesnt-work