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Mysql Copy tables

5:09 pm on Jan 30, 2009 (gmt 0)

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joined:May 13, 2003
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Basic reporting system:

Table1 contains a Unique ID and a Grade (Added from SIMS)
Table2 contains that same Unique ID and the Admission Number (Pupil Details)
Table3 contains an Admission Number and a Comment (Report Content)

Table1 - Col1 = UniqueID and Col2 = Grade

Table2 - Col1 = UniqueID and Col2 = Admission Number

Table3 - Col1 = AdmissionNumber Col2 = Comment Col3 = GradeCopy

I need to copy the 'Grade' from 'Table1' to 'Table3' but match that against the Unique ID and Admission number held in 'Table2'.

I need GradeCopy(Table3) to match Grade(Table1) but check that the correct grade is matched against the correct admission number after being check against the Unique ID.