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Thanks @Eddie D Could u also help me with the conditions which a column must satisfy to become a comparison key. Eg: if suppose i have 2 columns which distinctly identify a row in the table, but one column also has null values in some rows. However, the combination of the two columns still remain unique, so in that case, is it ok to choose those two columns? / comments
Thanks @Eddie D Could u also help me with the conditions which a column must satisfy to become a comparison key. Eg: if suppose i have 2 columns which distinctly identify a row in the table, but on...