Run bit AND, OR, and XOR operations across numbers in Oracle #SQL using
BIT_AND_AGG
BIT_AND_AND
BIT_AND_OR
functions from 21c
These convert numbers to binary, then do bitwise comparisons across rows
3 => 011
5 => 101
3 AND 5 => 001 => 1
3 XOR 5 => 110 => 6
3 OR 5 => 111 => 7
You can practice making calculations on a watch with dial here:
glufke.net/dial/ -> Just click or drag the dial...
That watch is a Citizen Navihawk JY8035-04E
A note to myself, because it's not so easy to find this (even using AI):
✨An easy way to set the APP_USER to be lowercase (or whatever you like), and not UPPERCASED as it is by default:
1. Create Post-Authentication Procedure in your Authentication Scheme
2. Use it
3. Verify…
Stop long-running #SQL statements from Oracle Database 18c with
ALTER SYSTEM CANCEL SQL '<sid>, <serial#>'
To ensure the next statement runs, you can pass the SQL ID of the statement to stop - in case it finishes first!
ALTER SYSTEM CANCEL SQL '<sid>, <serial#>, <sql_id>'
📢 dbLinter is officially in free preview!
Get automated quality checks for your #oracle#plsql code right in VS Code.
Customize rules, severities, and naming conventions in our app.
Watch it in action: youtu.be/V-ePBfUFhhk#dbLinter#orclAPEX#VSCode
Happy 4th of July !
with l as ( select rownum r from all_tables where rownum <= 16 ) , s as (select rpad(' ', 25, '* ') t from dual) select case when r>9 then decode( mod(r,2),1, trim(rpad(' ', 67, '=')) , ' ') when mod(r,2)=0 then s.t else ' * '||trim(s.t) || rpad('…
Oracle Database 21c enhanced analytic functions to support GROUPS, EXCLUDE, & the WINDOW clause:
fn ( ... ) OVER ( <w> GROUPS ... EXCLUDE ... )
...
WINDOW <w> AS ( ... )
GROUPS => rows with the same sort key are in the same group
EXCLUDE => omit the current or adjacent rows
🎯Ready… Set… CERTIFY! 🏁
The Oracle APEX Cloud Developer Professional Certification is now 100% FREE! 💥
Flex those low-code muscles, finish the courses, and show the world you've got what it takes. 🏆
✔ Register now: social.ora.cl/60164YnDa
✔ Read more about the promo:…
Delete data fast with a filtered table move from Oracle Database 12.2
ALTER TABLE ...
MOVE
INCLUDING ROWS WHERE <condition>
This discards rows where the condition is not true
This can remove lots of data faster than DELETE
Note this is DDL, so you can't roll it back!
Find the bottlenecks in PL/SQL code with the hierarchical profiler
DECLARE
DBMS_HPROF.CREATE_TABLES ();
id := DBMS_HPROF.START_PROFILING;
<code>
DBMS_HPROF.STOP_PROFILING;
DBMS_HPROF.ANALYZE ( id, report_clob => html );
END;
Enhanced in 18c to store trace data in tables
APEX gurus:
Anybody knows why I cannot use the event "apexafterrefresh" with an Interactive Grid ?
(It only works for other types of regions).
apex.jQuery( "body" ).on( "apexafterrefresh", function() {
console.log("This will never be triggered by Interactive Grid");…
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