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Added typedef decimal_digits_t (uint16) for number of digits in most

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aspects of decimals and integers

For fields and Item's uint8 should be good enough. After
discussions with Alexander Barkov we choose uint16 (for now)
as some format functions may accept +256 digits.

The reason for this patch was to make the usage and storage of decimal
digits simlar. Before this patch decimals was stored/used as uint8,
int and uint.  The lengths for numbers where also using a lot of
different types.

Changed most decimal variables and functions to use the new typedef.

squash! af7f09106b6c1dc20ae8c480bff6fd22d266b184

Use decimal_digits_t for all aspects of digits (total, precision
and scale), both for decimals and integers.
This commit is contained in:
Monty
2020-08-27 12:24:32 +03:00
committed by Sergei Golubchik
parent aee84453ab
commit fa7d4abf16
19 changed files with 275 additions and 226 deletions
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sql/sql_class.h
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@ -7581,7 +7581,7 @@ public:
void set_maybe_null(bool maybe_null_arg) { m_maybe_null= maybe_null_arg; }
bool get_maybe_null() const { return m_maybe_null; }
uint decimal_precision() const
decimal_digits_t decimal_precision() const
{
/*
Type_holder is not used directly to create fields, so