wt is the diff b/w greast and max ,least and min?
wt is the diff b/w case and decod?

Answer Posted / shivaindu

greatest/Least: we can pass any no. of exp
Max/Min: we can pass one exp that may a column

Case: is a statement function, cannot process null
Decode: is a function, can process null, we can use in
update statement.

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