# Quiz
+ Which of the following actions may cause changes to the online execution plan? (Select 3 items)
  + `A` . Collected statistics for a table
  + `B` . In the SQL statement, change from T1, T2, T3 to from T2, T3, T1
  + `C` . Added hint to the UPDATE statement
  + `D` . Rewrite a = b and b =5 in the where condition to a = 5 and b = 5
  + `E` . Adds an index to a column, but the column doesn't appear in the where condition
  + `F` . Change all table names after from to uppercase

------------------------------------------------------------
A, C, E