Which columns should you place at the beginning when creating temporary join tables?A.Columns containing big number of charactersB.Columns used for joins with other tablesC.Non key columnsD.Columns containing aggregate values
Question
Which columns should you place at the beginning when creating temporary join tables?A.Columns containing big number of charactersB.Columns used for joins with other tablesC.Non key columnsD.Columns containing aggregate values
Solution
When creating temporary join tables, you should place the columns used for joins with other tables at the beginning. This is because these columns will be used to match data between different tables, and having them at the start can make the process more efficient.
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