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Are they always just duplicates or can there also be triplicates, for example?
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Are they always just duplicates or can there also be triplicates, for example?

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I have the following sample data and I just want to swap only the membereligids for the same fname,lname and dob<br />
keeping the rest of the data as it is. The issue is there is unique constraint on the column Membereligids.<br />
<br />
Please see the attached sample data<br />
<br />
I am not sure how I can develop logic using CURSORS/FORALL. Can someone guide me ?<br />
<br />
Eg: Fname - Amit <br />
&nbsp;Lname - Kumar<br />
&nbsp; has two records with the same DOB but with different membereligids. I want to swap only 40681910,40813962<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2011/09_w40/504871/Sample-data.xls" target="_blank" class="file-inline" title="Sample_data (22 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Sample-data.xls</a>
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Sample-data.xls



I have the following sample data and I just want to swap only the membereligids for the same fname,lname and dob
keeping the rest of the data as it is. The issue is there is unique constraint on the column Membereligids.

Please see the attached sample data

I am not sure how I can develop logic using CURSORS/FORALL. Can someone guide me ?

Eg: Fname - Amit 
 Lname - Kumar
  has two records with the same DOB but with different membereligids. I want to swap only 40681910,40813962


FORALL in Oracle

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.