Alphanumeric sequence 0001 to ZZZZ (basic No 36)
Hi friends,
I need to create a sequence of 4 digits from 0001 to ZZZZ numners. It might be
0001
0002
0003
....
9999
A000
A001
A002
....
A999
B000
B001
B002
....
Z999
AA00
AA01
AA02
....
AA99
AB00
AB01
....
AZ99
AAA1
....
ZZZZ
I just many sons and other instances, AskTom, Tkyte, etc. But I don't have the answer. Most of the responses are Base 36. But my requirement is decimal based.
If the input is "1" then the output should be "0001" input '999', output "0999; Enter "9999", exit "9999." entry "10000", exit "A000"; 10001 entry, exit "A0001". and so on.
Thanks in advance.
This is an expanded version. It ranges from your specifications in this AZ99 is followed by BA00 instead of AAA1. I have also determined the letters use of SUBSTR () ing in a list rather than use CHR(). This gives you the possibility of missing some letters - O and I, for example. Just remove the letters you want to not letter_pool. It might be interesting to remove all vowels, thereby minimizing the chance that your code number contains all the rude words.
Anyway, here's my effort:
Alpha_encode (p_num in NUMBER) of the FUNCTION to CREATE or REPLACE RETURN VARCHAR2 IS DETERMINISTIC
code VARCHAR2 (4);
letter_pool VARCHAR2 (26): = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
letter_ct NUMBER: = LENGTH (letter_pool);
-Easier to start working on the digital beaches
NUMBER of boundary_x999: = 10000; -Beginning of the 999 codes x
NUMBER of boundary_xx99: = boundary_x999 + (letter_ct * 1000);
NUMBER of boundary_xxx9: = boundary_xx99 + (letter_ct * letter_ct * 100);
boundary_xxxx NUMBER: = boundary_xxx9 + (letter_ct * letter_ct * letter_ct * 10);
boundary_top NUMBER: = boundary_xxxx + (letter_ct * letter_ct * letter_ct * letter_ct);
letter_part NUMBER; -Part of the number to be encoded as a letter
BEGIN
IF p_num< 0="" or="" p_num="" !="TRUNC(p_num)" then ="" --="" not="" a="" positive="">
RAISE value_error;
ELSIF p_num< boundary_x999="" then ="" --="" straight="">
Code: = TO_NUMBER (p_num 'fm0000');
ELSIF p_num< boundary_xx99="" then ="" --="">
letter_part: = TRUNC ((p_num-boundary_x999)/1000);
Code: = SUBSTR (letter_pool,
letter_part + 1,
1)
|| SUBSTR (to_char (p_num),-3);
ELSIF p_num< boundary_xxx9 ="" then ="" --="">
letter_part: = TRUNC ((p_num-boundary_xx99)/100);
Code: = SUBSTR (letter_pool,
TRUNC(letter_part/letter_ct) + 1,
1) ||
SUBSTR (letter_pool,
MOD (letter_part, letter_ct) + 1,
1) ||
SUBSTR (to_char (p_num),-2);
ELSIF p_num< boundary_xxxx ="" then ="" --="">
letter_part: = TRUNC ((p_num-boundary_xxx9)/10);
Code: = SUBSTR (letter_pool,
TRUNC (letter_part /(letter_ct*letter_ct)) + 1,
1) ||
SUBSTR (letter_pool,
MOD (TRUNC(letter_part/letter_ct), letter_ct) + 1,
1) ||
SUBSTR (letter_pool,
MOD (letter_part, letter_ct) + 1,
1) ||
SUBSTR (to_char (p_num),-1);
ELSIF p_num< boundary_top ="" then ="" --="">
letter_part: = p_num-boundary_xxxx;
Code: = SUBSTR (letter_pool,
TRUNC (letter_part /(letter_ct*letter_ct*letter_ct)) + 1,
1) ||
SUBSTR (letter_pool,
MOD (trunc (letter_part /(letter_ct*letter_ct)), letter_ct) + 1;
1) ||
SUBSTR (letter_pool,
MOD (TRUNC(letter_part/letter_ct), letter_ct) + 1,
1) ||
SUBSTR (letter_pool,
MOD (letter_part, letter_ct) + 1,
(1);
ON THE OTHER
RAISE value_error; -Number is greater than the able to face coding
END IF;
RETURN code;
END;
Tags: Database
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)
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T
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S
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F001S
------------------
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DB version: 11
Question * 1 * and * 2 *:
To determine the current value of a suite I try
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Steve_74 wrote:
DB version: 11Question * 1 * and * 2 *:
To determine the current value of a suite I trySQL> SELECT SEQ_SHP_HDR.CURRVAL FROM DUAL; SELECT SEQ_SHP_HDR.CURRVAL FROM DUAL * ERROR at line 1: ORA-08002: sequence SEQ_SHP_HDR.CURRVAL is not yet defined in this session
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YES, it's the good way to increment a sequence. Use NEXTVAL to increment a sequence.
Question * 4 *.
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