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SELECT NAME FROM ABCD WHERE NAME LIKE "+aero+%"AND ROWNUM <= 10


SELECT NAME FROM ABCD WHERE NAME LIKE "+aero+%"AND ROWNUM <= 10

By : Watch Teller
Date : October 16 2020, 11:12 PM
should help you out SELECT NAME FROM ABCD WHERE NAME LIKE "+aero+%"AND ROWNUM <= 10 , You need single quotes:
code :


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Oracle/SQL: Why does query "SELECT * FROM records WHERE rownum >= 5 AND rownum <= 10" - return zero rows

Oracle/SQL: Why does query "SELECT * FROM records WHERE rownum >= 5 AND rownum <= 10" - return zero rows


By : Davy Campano
Date : March 29 2020, 07:55 AM
will help you In Oracle, Rownum values are assigned after the filtering stage of the query - they are not rows of the table, they are rows of the query result set.
So the first row that comes back will always be given rownum 1, the second row that comes back rownum 2, etc.
code :
select * from t where ROWNUM > 1
SQL Query to return results if user entered "ABCD-EFGH" instead of "ABCDEFGH"

SQL Query to return results if user entered "ABCD-EFGH" instead of "ABCDEFGH"


By : PeeduS
Date : March 29 2020, 07:55 AM
around this issue you need to employ some sort of editDistance algorithm i.e Levenshtein distance ,Jaro–Winkler distance to calculate the difference between 2 strings.
look at this thread for Levenshtein distance implemented as udf
code :
SELECT * FROM dbo.myTable
WHERE   dbo.editDistance(mycol,@SearchString)<2
Writing a function that converts "12#abcd#09bla" into "abcd"

Writing a function that converts "12#abcd#09bla" into "abcd"


By : Shagai
Date : March 29 2020, 07:55 AM
should help you out So with a lot of trial and error I did it like this:
code :
void hashtag(char *S, char *P){
    sscanf(S, "%*[^#]#%[^#]", P);
    puts(P);
}
How to manually lexicographically compareTo "abcd" & ""abcde" effectively

How to manually lexicographically compareTo "abcd" & ""abcde" effectively


By : aigeek
Date : March 29 2020, 07:55 AM
should help you out That depends on how much of it you want to write yourself. You could use
code :
return a.length() - b.length(); // as length is non-negative
return Integer.compareTo(a.length(), b.length());
for (int i = 0; i < a.length() && i < b.length(); i++) {
    int diff = a.charAt(i) - b.charAt(i);
    if (diff != 0)
        return diff;
}
SQL: What is difference between "where FIRSTNAME = 'X' and rownum <5" AND "where rownum <5 and FIRS

SQL: What is difference between "where FIRSTNAME = 'X' and rownum <5" AND "where rownum <5 and FIRS


By : Via J
Date : September 29 2020, 10:00 AM
I hope this helps you . [TL;DR] There is no difference in the EXPLAIN PLAN for the two queries; they are evaluated identically.
code :
CREATE TABLE employee ( firstname ) AS
SELECT CHR( 64 + level ) FROM DUAL CONNECT BY LEVEL <= 26;
EXPLAIN PLAN FOR
select * from EMPLOYEE where FIRSTNAME = 'X' and rownum <5;

SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY());
| PLAN_TABLE_OUTPUT                                                               |
| :------------------------------------------------------------------------------ |
| Plan hash value: 3463100252                                                     |
|                                                                                 |
| ------------------------------------------------------------------------------- |
| | Id  | Operation          | Name     | Rows  | Bytes | Cost (%CPU)| Time     | |
| ------------------------------------------------------------------------------- |
| |   0 | SELECT STATEMENT   |          |     1 |     4 |     3   (0)| 00:00:01 | |
| |*  1 |  COUNT STOPKEY     |          |       |       |            |          | |
| |*  2 |   TABLE ACCESS FULL| EMPLOYEE |     1 |     4 |     3   (0)| 00:00:01 | |
| ------------------------------------------------------------------------------- |
|                                                                                 |
| Predicate Information (identified by operation id):                             |
| ---------------------------------------------------                             |
|                                                                                 |
|    1 - filter(ROWNUM<5)                                                         |
|    2 - filter("FIRSTNAME"='X')                                                  |
|                                                                                 |
| Note                                                                            |
| -----                                                                           |
|    - dynamic sampling used for this statement (level=2)                         |
EXPLAIN PLAN FOR
select * from EMPLOYEE where rownum <5 and FIRSTNAME = 'X';

SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY());
| PLAN_TABLE_OUTPUT                                                               |
| :------------------------------------------------------------------------------ |
| Plan hash value: 3463100252                                                     |
|                                                                                 |
| ------------------------------------------------------------------------------- |
| | Id  | Operation          | Name     | Rows  | Bytes | Cost (%CPU)| Time     | |
| ------------------------------------------------------------------------------- |
| |   0 | SELECT STATEMENT   |          |     1 |     4 |     3   (0)| 00:00:01 | |
| |*  1 |  COUNT STOPKEY     |          |       |       |            |          | |
| |*  2 |   TABLE ACCESS FULL| EMPLOYEE |     1 |     4 |     3   (0)| 00:00:01 | |
| ------------------------------------------------------------------------------- |
|                                                                                 |
| Predicate Information (identified by operation id):                             |
| ---------------------------------------------------                             |
|                                                                                 |
|    1 - filter(ROWNUM<5)                                                         |
|    2 - filter("FIRSTNAME"='X')                                                  |
|                                                                                 |
| Note                                                                            |
| -----                                                                           |
|    - dynamic sampling used for this statement (level=2)                         |
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