Is there a function or a process to generate and maintain an alphanumeric sequence?
I need to be able to sequentially generate both a 3 and 5 byte case sensitive alphanumeric primary key that uses A-Za-z0-9 characters intermittently of which the 5 byte MAY be a subset of the 3 byte. e.g. the key can be 00000 or a3BD7.
so I need to be able to generate a new 5 char using 3 char base and if that value is not available, generate a unique 5 char value and allocate the substr(1,3) of that value backwards.
Ex1: unique customer location comes in - not a preexisting customer name (same name,different location address doesn't exist) --> select nextval.[5char] into v_long_c to insert into customer_loc table, and substr (v_long_c, 1, 3) for customer name table.
EX 2: unique customer location comes in. customer name exists in customer table with 3char val A39, but that location doesn't exist in customer_location table (5chars are location specific).
I need to take the A39 and generate new 5char for that unique location using that prefix (A39) if possible.
However, a number of a39-- already exist, though not all assigned to the same customer name (we're trying to keep them grouped together but that might not be logically feasible)
How do I select next a39||[2char] for that unique location - and if that value is not available (all 62*62 possibilities have been used for A39--), select nextval.[5charseq] into long_key.
I suspect someone out there knows the functions I can use to create this or has written a package to do just this; I suspect with enough time I could do it, but I don't currently have the time or knowledge to develop it within these deadlines. I thought it would be easier.
My short-sighted solution was to create a static table of all iterations of A-z0-9 5 char values, select one, mark it used and move on. Unfortunately 62^5 is a substantial number (913+million records) and that table took a LOT of space, causing my development server to groan and crack miserably. indexing on it takes a lot of space too (and trying to build multiple indexes exceeded database size). But without an index on the 3char field, selecting an available 5 code from it based on the customer_3char prefix took five minutes - much longer than the fraction of a second I need.
I have a table called table 1 and I am trying to insert a few values in this table and i am constantly getting bogged down by a primary key error. Strange thing is this primary key called "ID" on the table is a system generated sequence value number. The error is
why the error is coming up and any way to resolve it. I checked the max sequence number value and kept running it for a while and then tried to run my insert statement but no luck yet.
insert into x values('A-1'); insert into x values('B-1'); insert into x values('B-2'); insert into x values('B-3'); insert into x values('1'); insert into x values('A-2'); insert into x values('2'); insert into x values('3'); insert into x values('A-4'); insert into x values('B-4'); insert into x values('C-4'); insert into x values('D-4');
i need a function which checks if v_rand carrying a value is alphanumeric if nt this value of 6 alpha numeric characters must be generated again... here is the actual fn.
Function alphanumeric Return varchar2 is v_rand varchar2(10) := 0; Begin [code]......
Wanted to sort in a way that column1 will be same order and the second column will order first with ARCT-XXXXX and then reset of the column2. It should look like this
I have a column COL1 in table TAB1 which is varchar2. I want select only rows which has number and not alphanumeric value? I don't want to use regexp for this since
To built the Pl/SQL function or SQL query to validate the given string for alphanumeric character.
I would pass the string of size 10 character, we need to validate first 5 character as alphabet, next 4 character as numeric and last 1 character as alphabet.
I will pass the each row value to the function, it need to return "T" or "F" based on the condition,first 5 character as alphabet, next 4 character as numeric and last 1 character as alphabet.
Here is the DML and DDL.
[code]
create table abc ( classid varchar(10));
insert into abc values ("abcde1234f"); insert into abc values ("abcde12345"); insert into abc values ("ab1de1234f"); insert into abc values ("abcde1234f"); insert into abc values ("abcd21234f");
[code]
Output:
Input : abcde1234f Output : T Input : abcde12345 Output : F Input : ab1de1234f Output : F Input : abcde1234f Output : T Input : abcd21234f Output : F
I'm a newbie to PL/SQL. I had a quick query about trapping exceptions.
I have a sample table called my_emp, which contains last name, salary, etc. I have written the following code that takes in an employee salary and if the salary exists it displays the last name and corresponding salary. If two or more rows are returned, the exception handles it. Likewise if there are no records with that salary, the exception takes care of it.
I was trying to input an alphanumeric input, such as 1bbb as the salary and of course ORA-06502 error pops up in the sql command line. I now want to trap this using an exception but whatever I try I still get the ORA-06502 in the calling environment rather than getting the 'Not a number' or 'Some other error occured' message. why the WHEN VALUE_ERROR or the WHEN OTHERS exceptions are not trapping the error?
DECLARE v_sal NUMBER (12) := '&Enter_salary'; v_last_name VARCHAR2(10); BEGIN SELECT last_name
I have created a form that have a button to check the character in the textbox is alphanumeric and symbol. Here attached the code, that i tried from other post.
I have created a trigger for after insert which updates a table when there is a row inserted in that table. The update is on a column which stores the application description along with the sequence number. Now my requirement is that sequence number should be unique only with in an application but not with in the table.Say the row entry can be as follows:
App_Desc Request_ID ----------------------- DEV 100 1 DEV 101 2 STG 100 3 STG 101 4
Here Request_ID is unique But the sequqnce thats created for DEV (100,101) should take an entry of 102 for the next entry for DEV and same applies for STG. So I have to use the same sequqnce for all the application.
1) Invoice Invoice_no number(8), Debtor varchar2(35), Invoice Date Date, Print Date Date, Currency varchar2(3), Total Amount Ex Number(11,2), Total Amount Vat Number(11,2), Total Amount Number(11,2), Status Varchar2(15),
For some reason Oracle Sequence is skipping the first value. Here is an example of script.
drop sequence tseq; drop table xyz; create table xyz (sno integer); create sequence tseq start with 1; insert into xyz values (tseq.nextval); select * from xyz;
Now the runtime of the script in SQL Developer:
drop sequence tseq succeeded. drop table xyz succeeded. create table succeeded. create sequence succeeded. 1 rows inserted SNO ---------------------- 2
Why is it skipping the starting value 1. Is there something new in 11g that is causing it to skip the first value. I have many scripts and they all are having errors due to this issue.
The below trigger is running fine without any error ,but i wasn't able to perform the exact logic by the below trigger.IF, inserting multiple row then the SIVNUM field gets the same sequence number for each row , without incrementing the value for the next row.
Only the sequence value increases on the next set of row ow's inserted
Example (inserting 2 rows ) based on the below trigger:
I have round about 100 sequences in a schema. How can i identify that which sequences are not used for a long time. Or How can i identify the last date when that sequence is used.
In our production, we have two nodes in the cluster. We use the sequence for one of the main table for primary key. Our application is expecting sequence number increments along with created date time stamp. Right now sequences are cached for each node and it creates problem for the application. We would not like to use NOCACHE option because it causes performance issue.
This is the current scenario -
Transaction #1 on Node 1 - Seq ID 1 - Time Stamp 12:01 Transaction #2 on Node 2 - Seq ID 51 - Time Stamp 12:02 Transaction #3 on Node 1 - Seq ID 2 - Time Stamp 12:03
When I try to query based on the time stamp, primary should also go up. To be very clear on what I would like to have, please consider the following example.Without using NOCACHE option, I need to have the data in the following order.
Transaction #1 on Node 1 - Seq ID 1 - Time Stamp 12:01 Transaction #2 on Node 2 - Seq ID 2 - Time Stamp 12:02 Transaction #3 on Node 1 - Seq ID 3 - Time Stamp 12:03
In other words, sequence number should always increment along with the time.
I have Created sequence in oracle 10G and its working fine. its showing THE NUMBER IS 2
SQL> DECLARE NUM NUMBER; 2 BEGIN 3 select SERIAL_NO.NEXTVAL into num from dual; 4 DBMS_OUTPUT.PUT_LINE('THE NUMBER IS ' ||NUM); 5 END; 6 / THE NUMBER IS 2
PL/SQL procedure successfully completed.When i execute this code in oracle 11G then it does not show output.
SQL> DECLARE NUM NUMBER; 2 BEGIN 3 NUM :=SERIAL_NO.NEXTVAL; 4 DBMS_OUTPUT.PUT_LINE('THE NUMBER IS ' ||NUM); 5 END; 6 /
PL/SQL procedure successfully completed. SQL> Why this is not showing output as THE NUMBER IS .
I created a Table with a single column varchar2.. in which I wanted to insert value like 'BBBBAB1'... till 'BBBBAB100'
Created a sequence starting with 1...
and inserted single row, and multiple rows using loop also; by using below code -
insert into Trans SELECT CONCAT('BBBBAB', Trans1.NEXTVAL) from dual;
but whenever I see the values they are not as required ... 'BBBBAB1' but one character 'B' is missing, and the values populating are 'BBBAB1'.. 'BBBAB100'
I have a table called "Subjects" which lists subjects to match with notations in another table I have created a simple sequence (CREATE sequence subjectid) to created the subject id for the table. But I notice that if there is a skip in the date, the sequence increments automatically when I am not even using it. It even appears to be incrementing even when I am not doing any database activity.
This is not an issue of data integrity, because the values in the subject_id column do not need to be sequential, they just need to be unique. But it really has me curious. I created another table called "keep_track" to keep track of what is happening:
