Replication and Floating Point Values
With statement-based replication, values are converted from decimal to binary. Because conversions
between decimal and binary representations of them may be approximate, comparisons involving
floating-point values are inexact. This is true for operations that use floating-point values explicitly,
or that use values that are converted to floating-point implicitly. Comparisons of floating-point values
might yield different results on master and slave servers due to differences in computer architecture,
the compiler used to build MySQL, and so forth. See Section 12.2, “Type Conversion in Expression
Evaluation”, and Section C.5.5.8, “Problems with Floating-Point Values”.
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