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MDEV-22503 MDB limits DECIMAL column precision to 16 doing CTAS with …
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…floor/ceil over DECIMAL(X,Y) where X > 16

The DECIMAL data type branch in Item_func_int_val::fix_length_and_dec()
incorrectly used DOUBLE-style length calculation, which resulted in
a smaller data type than the actual result of FLOOR()/CEIL() needs.
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@abarkov
abarkov committed May 14, 2020
1 parent 23d3d18 commit 910c319
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