In oracle Sql, we need to use '&' indicate substitution variable.
If the variable name is comprised with multiple words and I want to spaces between them, what should I do ?
I can of course connect these words with "_" like "&aaa_bbb_ccc", but if I have to use space rather than "_" what should I do ?
You can't have spaces in the variable name. But the name shouldn't matter to anyone running the code, it just needs to be meaningful to whoever is writing and maintaining it.
I suspect whoever is running the code is seeing the name when they are prompted for the value, e.g. as a very simple example, if the code is:
select '&abc_def' from dual;
then a user running it sees:
Enter value for abc_def:
which isn't very friendly, and I can imagine you wanting to have spaces instead of underscores in that prompt - so perhaps that is what you really mean.
SQL *Plus (and SQL Developer, and SQLcl) lets you create your own prompt for a substitution variable value with the ACCEPT command`:
accept abc_def char prompt = 'Please give a value for Abc Def';
select '&abc_def' from dual;
Now the end user see:
Please give a value for Abc Def:
You probably want to set verify off if you aren't already,
Read more about using substituion variables.
Related
I've looked at lots of examples for TRIM and REPLACE on the internet and for some reason I keep getting errors when I try.
I need to strip suffixes from my Netsuite item record names in a saved item search. There are three possible suffixes: -T, -D, -S. So I need to turn 24335-D into 24335, and 24335-S into 24335, and 24335-T into 24335.
Here's what I've tried and the errors I get:
Can you help me please? Note: I can't assume a specific character length of the starting string.
Use case: We already have a field on item records called Nickname with the suffixes stripped. But I've ran into cases where Nickname is incorrect compared to Name. Ex: Name is 24335-D but Nickname is 24331-D. I'm trying to build a saved search alert that tells me any time the Nickname does not equal suffix-stripped Name.
PS: is there anywhere I can pay for quick a la carte Netsuite saved search questions like this? I feel bad relying on free technical internet advice but I greatly appreciate any help you can give me!
You are including too much SQL - a formulae is like a single result field expression not a full statement so no FROM or AS. There is another place to set the result column/field name. One option here is Regex_replace().
REGEXP_REPLACE({name},'\-[TDS]$', '')
Regex meaning:
\- : a literal -
[TDS] : one of T D or S
$ : end of line/string
To compare fields a Formulae (Numeric) using a CASE statement can be useful as it makes it easy to compare the result to a number in a filter. A simple equal to 1 for example.
CASE WHEN {custitem_nickname} <> REGEXP_REPLACE({name},'\-[TDS]$', '') then 1 else 0 end
You are getting an error because TRIM can trim only one character : see oracle doc
https://docs.oracle.com/javadb/10.8.3.0/ref/rreftrimfunc.html (last example).
So try using something like this
TRIM(TRAILING '-' FROM TRIM(TRAILING 'D' FROM {entityid}))
And always keep in mind that saved searches are running as Oracle SQL queries so Oracle SQL documentation can help you understand how to use the available functions.
I am trying to recover a password I have not used in a long time.
I know the words used in the passphrase, but I do not remember exactly the character substitutions,
and upper/lower case I have used. I only remember some, and know the possibilities for others.
The passphrase I am trying to recover is 15 characters long.
I have installed John the Ripper (jumbo version 1.9), and I tried to create some rules for character
substitutions I know I have used hoping to quickly generate a wordlist with all possible passphrases
based on my rules.
Let's say my passphrase is password with some character substitutions. If I use this set of rules:
sa#
ss$
so0
soO
I get those results:
p#ssword
pa$$word
passw0rd
passwOrd
When I say I am looking for all possible combinations, I am looking for something lookig more like the following (this list is not exhaustive)
p#ssword
p#$sword
p#$$word
pa$sword
pa$$word
p#ssw0rd
p#$sw0rd
p#$$w0rd
pa$sw0rd
pa$$w0rd
p#sswOrd
p#$swOrd
p#$$wOrd
pa$swOrd
pa$$wOrd
Gathering all rules in one line does not help me achieve my goal, and making one rule (line) with substitution by character position is basically generating my list by hand.
I am now wondering how can I achieve my goal, or, if JtR is the right tool for the job.
I have found a solution that fits my use case. the oNx syntax allows to replace the character at Nth position (zero based) with x.
In addition to that, using brackets allow to apply more than one substitution to the same character. So oN[xy] will yield two passwords with the character at Nth position replaced with x, then y.
For my password example above, the rule needed to achieve my goal would be:
o1[a#] o2[sS$] o3[sS$] o5[oO0]
I hope it helps someone with some old database to unlock )
The IBM i implementation of regex uses apostrophes (instead of e.g. slashes) to delimit a regex string, i.e.:
... where REGEXP_SUBSTR(MYFIELD,'myregex_expression')
If I try to use an apostrophe inside a [group] within the expression, it always errors - presumably thinking I am giving a closing quote. I have tried:
- escaping it: \'
- doubling it: '' (and tripling)
No joy. I cannot find anything relevant in the IBM SQL manual or by google search.
I really need this to, for instance, allow names like O'Leary.
Thanks to Wiktor Stribizew for the answer in his comment.
There are a couple of "gotchas" for anyone who might land on this question with the same problem. The first is that you have to give the (presumably Unicode) hex value rather than the EBCDIC value that you would use, e.g. in ordinary interactive SQL on the IBM i. So in this case it really is \x27 and not \x7D for an apostrophe. Presumably this is because the REGEXP_ ... functions are working through Unicode even for EBCDIC data.
The second thing is that it would seem that the hex value cannot be the last one in the set. So this works:
^[A-Z0-9_\+\x27-]+ ... etc.
But this doesn't
^[A-Z0-9_\+-\x27]+ ... etc.
I don't know how to highlight text within a code sample, so I draw your attention to the fact that the hyphen is last in the first sample and second-to-last in the second sample.
If anyone knows why it has to not be last, I'd be interested to know. [edit: see Wiktor's answer for the reason]
btw, using double quotes as the string delimiter with an apostrophe in the set didn't work in this context.
A single quote can be defined with the \x27 notation:
^[A-Z0-9_+\x27-]+
^^^^
Note that when you use a hyphen in the character class/bracket expression, when used in between some chars it forms a range between those symbols. When you used ^[A-Z0-9_\+-\x27]+ you defined a range between + and ', which is an invalid range as the + comes after ' in the Unicode table.
I'm making a fully working add and subtract program as a nice little easy project. One thing I would love to know is if there is a way to restrict input to certain characters (such as 1 and 0 for the binary inputs and A and B for the add or subtract inputs). I could always replace all characters that aren't these with empty strings to get rid of them, but doing something like this is quite tedious.
Here is some simple code to filter out the specified characters from a user's input:
local filter = "10abAB"
local input = io.read()
input = input:gsub("[^" .. filter .. "]", "")
The filter variable is just set to whatever characters you want to be allowed in the user's input. As an example, if you want to allow c, add c: local filter = "10abcABC".
Although I assume that you get input from io.read(), it is possible that you get it from somewhere else, so you can just replace io.read() with whatever you need there.
The third line of code in my example is what actually filters out the text. It uses string:gsub to do this, meaning that it could also be written like this:
input = string.gsub(input, "[^" .. filter .. "]", "").
The benefit of writing it like this is that it's clear that input is meant to be a string.
The gsub pattern is [^10abAB], which means that any characters that aren't part of that pattern will be filtered out, due to the ^ before them and the replacement pattern, which is the empty string that is the last argument in the method call.
Bonus super-short one-liner that you probably shouldn't use:
local input = io.read():gsub("[^10abAB]", "")
I have a SQL script that creates a package with a comment containing an ampersand (&). When I run the script from SQL Plus, I am prompted to enter a substitute value for the string starting with &. How do I disable this feature so that SQL Plus ignores the ampersand?
This may work for you:
set define off
Otherwise the ampersand needs to be at the end of a string,
'StackOverflow &' || ' you'
EDIT: I was click-happy when saving... This was referenced from a blog.
If you sometimes use substitution variables you might not want to turn define off. In these cases you could convert the ampersand from its numeric equivalent as in || Chr(38) || or append it as a single character as in || '&' ||.
I resolved with the code below:
set escape on
and put a \ beside & in the left 'value_\&_intert'
Att
You can set the special character, which is looked for upon execution of a script, to another value by means of using the SET DEFINE <1_CHARACTER>
By default, the DEFINE function itself is on, and it is set to &
It can be turned off - as mentioned already - but it can be avoided as well by means of setting it to a different value. Be very aware of what sign you set it to. In the below example, I've chose the # character, but that choice is just an example.
SQL> select '&var_ampersand #var_hash' from dual;
Enter value for var_ampersand: a value
'AVALUE#VAR_HASH'
-----------------
a value #var_hash
SQL> set define #
SQL> r
1* select '&var_ampersand #var_hash' from dual
Enter value for var_hash: another value
'&VAR_AMPERSANDANOTHERVALUE'
----------------------------
&var_ampersand another value
SQL>
set define off <- This is the best solution I found
I also tried...
set define }
I was able to insert several records containing ampersand characters '&' but I cannot use the '}' character into the text
So I decided to use "set define off" and everything works as it should.
According to this nice FAQ there are a couple solutions.
You might also be able to escape the ampersand with the backslash character \ if you can modify the comment.
I had a CASE statement with WHEN column = 'sometext & more text' THEN ....
I replaced it with
WHEN column = 'sometext ' || CHR(38) || ' more text' THEN ...
you could also use
WHEN column LIKE 'sometext _ more text' THEN ...
(_ is the wildcard for a single character)