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| Re: How do I empty a column [message #373237 is a reply to message #373235] |
Thu, 05 April 2001 13:33   |
Andrew again...
Messages: 270
Registered: July 2000
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Senior Member |
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The only way I know of is to copy the data into a new table, drop the old column (or update it to set all values to null, "alter table t1 modify (col1...)" then copy the data in the temp table back again.
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| Re: How do I empty a column [message #373265 is a reply to message #373237] |
Fri, 06 April 2001 17:30 |
Subash Thatipalli
Messages: 2
Registered: April 2001
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Junior Member |
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I Know another way for this Solution...
here iam taking EMP Table as a Example..in that table i want to make empname as empty... In that
query 10,10 is is the ename colume size then it creates lenth is 5
the solution is
Create table temp as Select empno,lpad(substr(ename,10,10),5) Ename,job,sal,comm,deptno,from Emp;
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| Re: How do I empty a column [message #373266 is a reply to message #373237] |
Fri, 06 April 2001 17:37 |
Subash Thatipalli
Messages: 2
Registered: April 2001
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Junior Member |
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I Know another way for this Solution...
here iam taking EMP Table as a Example..in that table i want to make empname as empty... In that
query 10,10 is is the ename colume size then it creates lenth is 5
the solution is
Create table temp as Select empno,lpad(substr(ename,10,10),5) Ename,job,sal,comm,deptno,from Emp;
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