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Matching specific number strings with Reg Expressions

In my db I need to enter [^45] so that I do not get 45's coming back but obviously that also will exclude 54,
how do I exclude 45 and not 54 I have tried many combinations of not 45 and 54 but no matter what expressions i seem to enter even using Expresso to find success or failure i cannot figure it out.

More complicated ones have been completed but this one is escaping me.
May 30 '14 #1
1 1619
Rabbit
12,516 Expert Mod 8TB
Match for 45 and take the NOT of the result
May 30 '14 #2

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