I am trying to make unique slug URL in oracle using with regular expression. How can I get numeric value end of URL like that lorem-ipsum-dolor-2. My purpose that; Before I check inserted title if exist on table, check it numeric value end of URL if exist slug URL, if has numeric value increase it and save. I have tried the following regular expression that worked properly in C# but it not work in Oracle.
select regexp_like('lorem-ipsum-dolor-2','(\d+)*$') from dual;
What you are doing is almost correct.
But instead of regexp_like' you need to useregexp_substr`:sp
select regexp_substr('lorem-ipsum-dolor-2','\d+$') from dual;
If you are using oracle APEX, and I can assume that's the case if you are working with URLs, than you can use
select apex_string_util.to_slug('Any, Text!;') from dual;
>> any-text
Related
Anyone help me?
"Select List" (name: P2_SHOPS_LIST) that is created with the following SQL
SQL Statement: SELECT SHOP_NAME, GROUP_ID FROM T_ENTRY_SHOPS WHERE ID=:P2_LOV_ID;
It is necessary "GROUP_ID" because it is PK . But I need edit "SHOP_NAME" value and display to Text Field.
I think I can get the currently displayed SHOP_NAME by combining the above SQL with the selection row number, but is there any way to access this value with No SQL? Like
:P2_SHOPS_LIST.SHOP_NAME
(This gave me an error XD).
In the context of JavaScript, you can use the following
$('#P2_SHOPS_LIST option:selected').text()
This can be passed through to PL/SQL via a dynamic action, such as on change of your select list.
Or you could set your text item on change via a JS based action, using 'Set Value' and that code as the expression.
I have two tables, one containing list of URL and other having a list of words. My requirement is to filter out the URLs containing the words.
For eg:
URL
https://www.techhive.com/article/3409153/65-inch-oled-4k-tv-from-lg-at-a-1300-dollar-discount.html
https://www.techradar.com/in/news/lg-c9-oled-65-inch-4ktv-price-drop
https://www.t3.com/news/cheap-oled-tv-deals-currys-august
https://indianexpress.com/article/technology/gadgets/lg-bets-big-on-oled-tvs-in-india-to-roll-out-rollable-tv-by-year-end-5823635/
https://www.sony.co.in/electronics/televisions/a1-series
https://www.amazon.in/Sony-138-8-inches-Bravia-KD-55A8F/dp/B07BWKVBYW
https://www.91mobiles.com/list-of-tvs/sony-oled-tv
Words
Sony
Samsung
Deal
Bravia
Now I want to filter any URL that has any of the words. Normally i would do a
Select url from url_table where url not like '%Sony%' or url not like '%Samsung%' or url not like '%Deal%' or not like '%Bravia%';
But that's a cumbersome and not scalable way to do it. What is the best way to achieve this? How do I use a not like function to the words table?
Using regex:
where url not rlike '(?i)Sony|Samsung|Deal|Bravia'
(?i) means case insesitive.
And now let's build the same regexp from the table with words.
You can aggregate list of words from the table and pass it to the rlike. See this example:
with
initial_data as (--replace with your table
select stack(7,
'https://www.techhive.com/article/3409153/65-inch-oled-4k-tv-from-lg-at-a-1300-dollar-discount.html',
'https://www.techradar.com/in/news/lg-c9-oled-65-inch-4ktv-price-drop',
'https://www.t3.com/news/cheap-oled-tv-deals-currys-august',
'https://indianexpress.com/article/technology/gadgets/lg-bets-big-on-oled-tvs-in-india-to-roll-out-rollable-tv-by-year-end-5823635/',
'https://www.sony.co.in/electronics/televisions/a1-series',
'https://www.amazon.in/Sony-138-8-inches-Bravia-KD-55A8F/dp/B07BWKVBYW',
'https://www.91mobiles.com/list-of-tvs/sony-oled-tv'
) as url ) ,
words as (-- replace with your words table
select stack (4, 'Sony','Samsung','Deal','Bravia') as word
),
sub as (--aggregate list of words for rlike
select concat('''','(?i)',concat_ws('|',collect_set(word)),'''') words_regex from words
)
select s.url
from initial_data s cross join sub --cross join with words_regex
where url not rlike sub.words_regex --rlike works fine
Result:
OK
url
https://www.techhive.com/article/3409153/65-inch-oled-4k-tv-from-lg-at-a-1300-dollar-discount.html
https://www.techradar.com/in/news/lg-c9-oled-65-inch-4ktv-price-drop
https://indianexpress.com/article/technology/gadgets/lg-bets-big-on-oled-tvs-in-india-to-roll-out-rollable-tv-by-year-end-5823635/
Time taken: 10.145 seconds, Fetched: 3 row(s)
Also you can calculate sub subquery separately and pass it's result as a variable instead of cross join in my example. Hope you got the idea.
I am trying to add a string '_$' to a index name and a table name as follows. I need to use a method 'regexp_replace' in SELECT statement.
select regexp_replace(input_string......)
# Input
CREATE UNIQUE INDEX "SCOTT"."PK_EMP" ON "SCOTT"."EMP" ("EMP_NO")
# Desired Output
CREATE UNIQUE INDEX "SCOTT"."PK_EMP_$" ON "SCOTT"."EMP_$" ("EMP_NO")
Can you help me to build a regular expression for that?
Fairly brute solution would be using the following pattern:
(.*)(" ON ".*)(" \(.*)
with the following replace string:
\1_$\2_$\3
The pattern works by splitting the input in the places where you need to insert the _$ token, and then joining it back placing the tokens in the places we split the input:
CREATE UNIQUE INDEX "SCOTT"."PK_EMP|" ON "SCOTT"."EMP|" ("EMP_NO")
Full SELECT query would look like that:
SELECT REGEXP_REPLACE(
'CREATE UNIQUE INDEX "SCOTT"."PK_EMP" ON "SCOTT"."EMP" ("EMP_NO")',
'(.*)(" ON ".*)(" \(.*)',
'\1_$\2_$\3'
) RX
FROM dual;
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production.
I have a table in the below format.
Name Department
Johny Dep1
Jacky Dep2
Ramu Dep1
I need an output in the below format.
Dep1 - Johny,Ramu
Dep2 - Jacky
I have tried the 'LISTAGG' function, but there is a hard limit of 4000 characters. Since my db table is huge, this cannot be used in the app. The other option is to use the
SELECT CAST(COLLECT(Name)
But my framework allows me to execute only select queries and no PL/SQL scripts.Hence i dont find any way to create a type using "CREATE TYPE" command which is required for the COLLECT command.
Is there any alternate way to achieve the above result using select query ?
You should add GetClobVal and also need to rtrim as it will return delimiter in the end of the results.
SELECT RTRIM(XMLAGG(XMLELEMENT(E,colname,',').EXTRACT('//text()')
ORDER BY colname).GetClobVal(),',') from tablename;
if you cant create types (you can't just use sql*plus to create on as a one off?), but you're OK with COLLECT, then use a built-in array. There's several knocking around in the RDBMS. run this query:
select owner, type_name, coll_type, elem_type_name, upper_bound, length
from all_coll_types
where elem_type_name = 'VARCHAR2';
e.g. on my db, I can use sys.DBMSOUTPUT_LINESARRAY which is a varray of considerable size.
select department,
cast(collect(name) as sys.DBMSOUTPUT_LINESARRAY)
from emp
group by department;
A derivative of #anuu_online but handle unescaping the XML in the result.
dbms_xmlgen.convert(xmlagg(xmlelement(E, name||',')).extract('//text()').getclobval(),1)
For IBM DB2, Casting the result to a varchar(10000) will give more than 4000.
select column1, listagg(CAST(column2 AS VARCHAR(10000)), x'0A') AS "Concat column"...
I end up in another approach using the XMLAGG function which doesn't have the hard limit of 4000.
select department,
XMLAGG(XMLELEMENT(E,name||',')).EXTRACT('//text()')
from emp
group by department;
You can use:
SELECT department
, REGEXP_REPLACE(XMLCAST(XMLAGG(XMLELEMENT(x, name, ',')) AS CLOB), ',$')
FROM emp
GROUP BY department
it will return CLOB that has no size limit, handles correctly XML entity escapes and separators.
Instead of REGEXP_REPLACE(..., ',$')) you can use RTRIM(..., ','), which should be faster, but will remove all separators from the end of the result (including those that can appear in name at the end, or previous ones if last names are empty).
I have a table with one column having a large json object in the format below. The column datatype is VARCHAR
column1
--------
{"key":"value",....}
I'm interested in the first value of the column data
in regex I can do it by .*?:(.*),.* with group(1) giving me the value
How can i use it in the select query
Don't do that, it's bad database design. Shred the keys and values to their own table as columns, or use the XML data type. XML would work fine because you can index the structure well, and you can use XPATH queries on the data. XPATH supports regexp natively.
You can use regular expression with xQuery, you just need to call the function matches from a SQL query or a FLORW query.
This is an example of how to use regular expressions from SQL:
db2 "with val as (
select t.text
from texts t
where xmlcast(xmlquery('fn:matches(\$TEXT,''^[A-Za-z 0-9]*$'')') as integer) = 0
)
select * from val"
For more information:
http://pic.dhe.ibm.com/infocenter/db2luw/v10r5/topic/com.ibm.db2.luw.xml.doc/doc/xqrfnmat.html
http://angocadb2.blogspot.fr/2014/04/regular-expressions-in-db2.html
DB2 doesn't have any built in regex functionality, unfortunately. I did find an article about how to add this with libraries:
http://www.ibm.com/developerworks/data/library/techarticle/0301stolze/0301stolze.html
Without regexes, this operation would be a mess. You could make a function that goes through the string character by character to find the first value. Or, if you will need to do more than this one operation, you could make a procedure that parses the json and throws it into a table of keys/values. Neither one sounds fun, though.
In DB2 for z/OS you will have to pass the variable to XMLQUERY with the PASSING option
db2 "with val as (
select t.text
from texts t
where xmlcast(xmlquery('fn:matches($TEXT,''^[A-Za-z 0-9]*$'')'
PASSING t.text as "TEXT") as integer) = 0
)
select * from val"