diff options
Diffstat (limited to 'include/my_decimal_limits.h')
| -rw-r--r-- | include/my_decimal_limits.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/my_decimal_limits.h b/include/my_decimal_limits.h index 50d70357c42..a287e82f989 100644 --- a/include/my_decimal_limits.h +++ b/include/my_decimal_limits.h @@ -31,10 +31,16 @@ digits * number of decimal digits in one our big digit - number of decimal digits in one our big digit decreased by 1 (because we always put decimal point on the border of our big digits)) + + With normal precession we can handle 65 digits. MariaDB can store in + the .frm up to 63 digits. By default we use DECIMAL_NOT_SPECIFIED digits + when converting strings to decimal, so we don't want to set this too high. + To not use up all digits for the scale we limit the number of decimals to + 38. */ #define DECIMAL_MAX_PRECISION (DECIMAL_MAX_POSSIBLE_PRECISION - 8*2) -#define DECIMAL_MAX_SCALE 30 -#define DECIMAL_NOT_SPECIFIED 31 +#define DECIMAL_MAX_SCALE 38 +#define DECIMAL_NOT_SPECIFIED 39 /** maximum length of string representation (number of maximum decimal |