Find Duplicate Query MySQL Syntax
There is a "find duplicates" query in SQL that is very useful
but I'm not sure what the syntax is for MySQL. It probably has
something to do with select distinct, group by but I'm not used to
to using these.
This is one that finds all duplicates of [FULLNAME]
SELECT CONTACTS.*
WHERE (((CONTACTS.FULLNAME) In (SELECT [FULLNAME] FROM
[CONTACTS] As Tmp GROUP BY [FULLNAME]
HAVING Count(*)>1 )))
ORDER BY CONTACTS.FULLNAME, CONTACTS.COMPANY
Does anyone know?
RichardODreamweaver wrote:
> There is a "find duplicates" query in SQL that is very
useful but I'm not sure
> what the syntax is for MySQL.
SELECT COUNT(*) AS repetitions, FULLNAME, COMPANY
FROM CONTACTS
GROUP BY FULLNAME, COMPANY
HAVING repetitions > 1
It's not something I have used myself, but I got it from
MySQL Cookbook
by Paul DuBois, published by O'Reilly. I have the first
edition, which
covers MySQL 4.0. I think the second edition covers MySQL
5.0.
If you're using MySQL on a regular basis, you or your
employer should
buy it immediately. It will solve most of your problems and
repay its
cost many times over.
David Powers, Adobe Community Expert
Author, "Foundation PHP for Dreamweaver 8" (friends of ED)
Author, "PHP Solutions" (friends of ED)
http://foundationphp.com/
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Help with Finding Duplicate records Query
HI,
I am trying to write a query that will find duplicate records/cases.
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The problem that I need help on is how to combine those queries together (what I mean is a sub query). the 'X' query returns multiple values. please have a look at the comments on the query below to see what I'm trying to achieve.
here is the main query:
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I am using Oracle 11g, and sql developer.
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Edited by: Rooney on Jul 11, 2012 3:50 PMIf I got it right, you want to join table USSC_CASES.DEFENDANTS to duplicate rows in USSC_CASES. If so:
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DEF.BIRTH_DATE DOB,
TRIM(DIST.DISTRICT_NAME) DISTRICT_NAME,
S.DOCKET DOCKET,
S.DEF_NUM DEF_NUM,
S.SENT_VIO_DATE SENT_DATE,
DEF.PACTS_ID PACTS_NUM
FROM USSC_CASES.DEFENDANTS DEF,
SELECT *
FROM (
SELECT S.*,
COUNT(*) OVER(PARTITION BY DEF.BIRTH_DATE, S.DOCKET, S.SENT_VIO_DATE) CNT
FROM USSC_CASES.SENTENCES S
WHERE CNT > 1
) S,
LOOKUP.DISTRICTS DIST
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AND S.CASE_TYPE_CODE = 10
AND S.USSC_ID IS NOT NULL
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TRIM(DIST.DISTRICT_NAME) DISTRICT_NAME,
S.DOCKET DOCKET,
S.DEF_NUM DEF_NUM,
S.SENT_VIO_DATE SENT_DATE,
DEF.PACTS_ID PACTS_NUM
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Script to find duplicate index and how can we tell if an index is REALLY a duplicate?
Does any one have script to find duplicate index? and how can we tell if an index is REALLY a duplicate?
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from sys.sysindexkeys as k
where k.id = i.object_id
and k.indid = i.index_id
order by keyno, colid
for xml path('')) as cols,
(select case keyno when 0 then colid else NULL end as [data()]
from sys.sysindexkeys as k
where k.id = i.object_id
and k.indid = i.index_id
order by colid
for xml path('')) as inc
from sys.indexes as i
select
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c1.name as 'index',
c2.name as 'exactduplicate'
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join indexcols as c2
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and c1.inc = c2.inc;
The second variation of this query finds partial, or duplicate, indexes
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These types of indexes are probable dead indexes walking.
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select object_id as id, index_id as indid, name,
(select case keyno when 0 then NULL else colid end as [data()]
from sys.sysindexkeys as k
where k.id = i.object_id
and k.indid = i.index_id
order by keyno, colid
for xml path('')) as cols
from sys.indexes as i
select
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c1.name as 'index',
c2.name as 'partialduplicate'
from indexcols as c1
join indexcols as c2
on c1.id = c2.id
and c1.indid < c2.indid
and (c1.cols like c2.cols + '%'
or c2.cols like c1.cols + '%') ;
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Hello,
Our current environment consists of BW Queries which are access by BO Universes. When creating a Universe we were able to see all queries but since we did some changes to the MP and cubes we don't see the queries anymore from BO Side.
Also the current reports fail with an error "Unable to find Cube <QueryName> in catalog".
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We have the same behaviour currently in Crystal 2008 designer and universe designer.
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We made sure the "allow external access" option is set in BEX.
We resolved both issues with same root cause : adjust Query properties -> Req. status -> ...
Pls refer to thread Unable to find BW Query while creating connection with universe designer as well - thanks Ingo !
- logon to the SAP system
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Let us know if this helped !
Holger
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I am working on CRM 5.0. We are uploading contact details to CRM through ELM.
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I want to find duplicate names from my database I wrote the following query. But it is displaying more that existing records. I guess it is taking cartesian product.
select a.name from emp from emp a,emp b where a.name=b.name;
can anyone correct this query.
I want to display all the duplicate records having same names...
for example for the following table. I want to display result having same dname like
DEPTNO DNAME LOC
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON
50 SALES hyd
output should be
30 sales chicago
50 sales hydWelcome to OTN.
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satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:00.16
satyaki>
satyaki>
satyaki>create table dup_emp
2 as
3 select k.*
4 from (
5 select * from emp
6 union all
7 select * from emp
8 where rownum < 6
9 ) k;
Table created.
Elapsed: 00:00:03.90
satyaki>
satyaki>
satyaki>select * from dup_emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
9999 SATYAKI SLS 7698 02-NOV-08 55000 3455 10
7777 SOURAV SLS 14-SEP-08 45000 3400 10
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 4450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 7000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
9999 SATYAKI SLS 7698 02-NOV-08 55000 3455 10
7777 SOURAV SLS 14-SEP-08 45000 3400 10
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
18 rows selected.
Elapsed: 00:00:00.32
satyaki>
satyaki>
satyaki>select empno, count(empno)
2 from dup_emp
3 group by empno
4 having count(empno) > 1;
EMPNO COUNT(EMPNO)
9999 2
7777 2
7521 2
7566 2
7654 2
Elapsed: 00:00:00.11
satyaki>
satyaki>
satyaki>Regards.
Satyaki De. -
Hi all,
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+++Administrator:3220000:3220011:----2011/01/03 02:51:43
-------------------- SQL Request:
+++Administrator:3220000:3220011:----2011/01/03 02:51:43
-------------------- General Query Info:
Repository: Star, Subject Area: AAA, Presentation: AAA
+++Administrator:3220000:3220011:----2011/01/03 02:51:43
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+++Administrator:3220000:3220011:----2011/01/03 02:51:43
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+++Administrator:3220000:3220011:----2011/01/03 02:51:43
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Edited by: Sonal on Jan 3, 2011 5:29 AM
Edited by: Sonal on Jan 3, 2011 5:30 AM
Edited by: Sonal on Jan 3, 2011 5:30 AMHi,
as Daan said, set the variable in Advanced tab but not on loglevel..
because, our problem is to bypass the bi-server cache.
Do this:
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In Windows, you can restore much of the look & feel of iTunes 10.7 with these shortcuts:
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CTRL+B to show or hide the menu bar
CTRL+S to show or hide the sidebar
CTRL+/ to show or hide the status bar (won't hide for me on Win XP)
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(If you don't see the menu bar press ALT to show it temporarily or CTRL+B to keep it displayed)
Yes, iTunes 11 will support your iPod classic.
tt2 -
Query quiz find a query for sine function distribution
Let me tell you something about distribution function.
Here, i use the term, 'distribution function' differently from what we use in general mathematics.
See the following query which generates self-counting sequence.
SELECT TRUNC (1 / 2 + SQRT (2 * LEVEL)) level#
FROM DUAL
CONNECT BY LEVEL <= 1000LEVEL#
1
2
2
3
3
3
4
4
4
4
5
5
5
5
5
and, if we add some group by and counting to the above query...
SELECT level#
, LPAD ('*', COUNT (*), '*')
FROM (SELECT TRUNC (1 / 2 + SQRT (2 * LEVEL)) level#
FROM DUAL
CONNECT BY LEVEL <= 1000)
GROUP BY level#we can see a graph like below
LEVEL# LPAD('*',COUNT(*),'*')
1 *
2 **
3 ***
4 ****
5 *****
6 ******
7 *******
8 ********
9 *********
10 **********
11 ***********
12 ************
13 *************
14 **************
15 ***************
16 ****************
17 *****************
18 ******************
19 *******************
20 ********************
...As we all know, this is like a function f(x) = x.
i use the term, 'distribution function' as this meaning!
Distribution of numbers of data values.
Now, my question is this.
Find a query that generates distribution function f(x) = sin(x)
(Here, any amplitude and any period of sine function is allowed except zero.
And only the form of sine function is important.
No subquery factoring or user-defined function or procedure is allowed.
Use simple select statement only.)
And now, have a good challenge!
SELECT level#
, LPAD ('*', COUNT (*), '*')
FROM (
-------- some query -------------------
GROUP BY level#
LEVEL# LPAD('*',COUNT(*),'*')
0 *
1 **
2 *******
3 *************
4 *****************
5 **********************
6 **************************
7 ******************************
8 **********************************
9 **************************************
10 ****************************************
11 ********************************************
12 *********************************************
13 ************************************************
14 *************************************************
15 *************************************************
16 **************************************************
17 **************************************************
18 *************************************************
19 ************************************************
20 ***********************************************
21 ********************************************
22 ******************************************
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24 ***********************************
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26 ****************************
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2 ||lpad('*',abs(val),'*'), lpad(' ', scale, ' ')||lpad('*',val,'*')) as graph
3 from
4 (select rownum-1 rn, (sin(((rownum-1)/180)*acos(-1))) * x.scale as val, x.scale
5 from dual, (select 50 as scale from dual) x
6 connect by rownum <= 360);
DEGREES GRAPH
0
1
2 *
3 **
4 ***
5 ****
6 *****
7 ******
8 ******
9 *******
10 ********
11 *********
12 **********
13 ***********
14 ************
15 ************
16 *************
17 **************
18 ***************
19 ****************
20 *****************
21 *****************
22 ******************
23 *******************
24 ********************
25 *********************
26 *********************
27 **********************
28 ***********************
29 ************************
30 *************************
31 *************************
32 **************************
33 ***************************
34 ***************************
35 ****************************
36 *****************************
37 ******************************
38 ******************************
39 *******************************
40 ********************************
41 ********************************
42 *********************************
43 **********************************
44 **********************************
45 ***********************************
46 ***********************************
47 ************************************
48 *************************************
49 *************************************
50 **************************************
51 **************************************
52 ***************************************
53 ***************************************
54 ****************************************
55 ****************************************
56 *****************************************
57 *****************************************
58 ******************************************
59 ******************************************
60 *******************************************
61 *******************************************
62 ********************************************
63 ********************************************
64 ********************************************
65 *********************************************
66 *********************************************
67 **********************************************
68 **********************************************
69 **********************************************
70 **********************************************
71 ***********************************************
72 ***********************************************
73 ***********************************************
74 ************************************************
75 ************************************************
76 ************************************************
77 ************************************************
78 ************************************************
79 *************************************************
80 *************************************************
81 *************************************************
82 *************************************************
83 *************************************************
84 *************************************************
85 *************************************************
86 *************************************************
87 *************************************************
88 *************************************************
89 *************************************************
90 **************************************************
91 *************************************************
92 *************************************************
93 *************************************************
94 *************************************************
95 *************************************************
96 *************************************************
97 *************************************************
98 *************************************************
99 *************************************************
100 *************************************************
101 *************************************************
102 ************************************************
103 ************************************************
104 ************************************************
105 ************************************************
106 ************************************************
107 ***********************************************
108 ***********************************************
109 ***********************************************
110 **********************************************
111 **********************************************
112 **********************************************
113 **********************************************
114 *********************************************
115 *********************************************
116 ********************************************
117 ********************************************
118 ********************************************
119 *******************************************
120 *******************************************
121 ******************************************
122 ******************************************
123 *****************************************
124 *****************************************
125 ****************************************
126 ****************************************
127 ***************************************
128 ***************************************
129 **************************************
130 **************************************
131 *************************************
132 *************************************
133 ************************************
134 ***********************************
135 ***********************************
136 **********************************
137 **********************************
138 *********************************
139 ********************************
140 ********************************
141 *******************************
142 ******************************
143 ******************************
144 *****************************
145 ****************************
146 ***************************
147 ***************************
148 **************************
149 *************************
150 *************************
151 ************************
152 ***********************
153 **********************
154 *********************
155 *********************
156 ********************
157 *******************
158 ******************
159 *****************
160 *****************
161 ****************
162 ***************
163 **************
164 *************
165 ************
166 ************
167 ***********
168 **********
169 *********
170 ********
171 *******
172 ******
173 ******
174 *****
175 ****
176 ***
177 **
178 *
179
180
181
182 *
183 **
184 ***
185 ****
186 *****
187 ******
188 ******
189 *******
190 ********
191 *********
192 **********
193 ***********
194 ************
195 ************
196 *************
197 **************
198 ***************
199 ****************
200 *****************
201 *****************
202 ******************
203 *******************
204 ********************
205 *********************
206 *********************
207 **********************
208 ***********************
209 ************************
210 *************************
211 *************************
212 **************************
213 ***************************
214 ***************************
215 ****************************
216 *****************************
217 ******************************
218 ******************************
219 *******************************
220 ********************************
221 ********************************
222 *********************************
223 **********************************
224 **********************************
225 ***********************************
226 ***********************************
227 ************************************
228 *************************************
229 *************************************
230 **************************************
231 **************************************
232 ***************************************
233 ***************************************
234 ****************************************
235 ****************************************
236 *****************************************
237 *****************************************
238 ******************************************
239 ******************************************
240 *******************************************
241 *******************************************
242 ********************************************
243 ********************************************
244 ********************************************
245 *********************************************
246 *********************************************
247 **********************************************
248 **********************************************
249 **********************************************
250 **********************************************
251 ***********************************************
252 ***********************************************
253 ***********************************************
254 ************************************************
255 ************************************************
256 ************************************************
257 ************************************************
258 ************************************************
259 *************************************************
260 *************************************************
261 *************************************************
262 *************************************************
263 *************************************************
264 *************************************************
265 *************************************************
266 *************************************************
267 *************************************************
268 *************************************************
269 *************************************************
270 **************************************************
271 *************************************************
272 *************************************************
273 *************************************************
274 *************************************************
275 *************************************************
276 *************************************************
277 *************************************************
278 *************************************************
279 *************************************************
280 *************************************************
281 *************************************************
282 ************************************************
283 ************************************************
284 ************************************************
285 ************************************************
286 ************************************************
287 ***********************************************
288 ***********************************************
289 ***********************************************
290 **********************************************
291 **********************************************
292 **********************************************
293 **********************************************
294 *********************************************
295 *********************************************
296 ********************************************
297 ********************************************
298 ********************************************
299 *******************************************
300 *******************************************
301 ******************************************
302 ******************************************
303 *****************************************
304 *****************************************
305 ****************************************
306 ****************************************
307 ***************************************
308 ***************************************
309 **************************************
310 **************************************
311 *************************************
312 *************************************
313 ************************************
314 ***********************************
315 ***********************************
316 **********************************
317 **********************************
318 *********************************
319 ********************************
320 ********************************
321 *******************************
322 ******************************
323 ******************************
324 *****************************
325 ****************************
326 ***************************
327 ***************************
328 **************************
329 *************************
330 *************************
331 ************************
332 ***********************
333 **********************
334 *********************
335 *********************
336 ********************
337 *******************
338 ******************
339 *****************
340 *****************
341 ****************
342 ***************
343 **************
344 *************
345 ************
346 ************
347 ***********
348 **********
349 *********
350 ********
351 *******
352 ******
353 ******
354 *****
355 ****
356 ***
357 **
358 *
359
360 rows selected.
SQL>
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