https://dev.mysql.com/precision-math-decimal-characteristics.html
This section discusses the characteristics of the DECIMAL data type (and its synonyms), with particular regard to the following topics: Maximum number of digits Storage format Storage requirements The nonstandard MySQL extension to the upper range ...The ranges of values for the arguments are as follows: M is the maximum number of digits (the ...
https://dev.mysql.com/fixed-point-types.html
The DECIMAL and NUMERIC types store exact numeric data values. In MySQL, NUMERIC is implemented as DECIMAL, so the following remarks about DECIMAL apply equally to NUMERIC. In a DECIMAL column declaration, the precision and scale can be (and ...
https://dev.mysql.com/udf-calling.html
unsigned int decimals The number of decimal digits to the right of the decimal point. The default value is the maximum number of decimal digits in the arguments passed to the main function. For example, if the function is passed 1.34, 1.345, and ...
https://dev.mysql.com/constant-folding-optimization.html
If the constant is one of the decimal types (such as DECIMAL, REAL, DOUBLE, or FLOAT) and has a nonzero decimal portion, it cannot be equal; fold accordingly. A REAL value that is too small to be represented as DECIMAL is rounded to .01 or -.01 ...
https://dev.mysql.com/numeric-type-overview.html
As of MySQL 8.0.17, the UNSIGNED attribute is deprecated for columns of type FLOAT, DOUBLE, and DECIMAL (and any synonyms) and will be removed in a future MySQL version. M is the total number of digits (the precision) and D is the number of digits ...For additional information about properties and storage requirements of the numeric types, see Section 11.2, “Numeric Types”, and Section 11.8, “Data Type Storage ...
https://dev.mysql.com/mathematical-functions.html
FORMAT(X,D) Formats the number X to a format like '#,###,###.##', rounded to D decimal places, and returns the result as a string. HEX(N_or_S) This function can be used to obtain a hexadecimal representation of a decimal number or a string; the ...
https://dev.mysql.com/precision-math-examples.html
Rounding for exact-value columns (DECIMAL and integer) and exact-valued numbers uses the “round half away from zero” rule. Consider these statements: mysql> CREATE TABLE t (i INT, d DECIMAL, f FLOAT); mysql> INSERT INTO t VALUES(1,1,1); mysql> ... This section provides some examples that show precision math query results in ...
https://dev.mysql.com/server-error-reference.html
Error number: 1427; Symbol: ER_M_BIGGER_THAN_D; SQLSTATE: 42000 Message: For float(M,D), double(M,D) or decimal(M,D), M must be >= D (column '%s'). Error number: 3859; Symbol: ER_WARN_DEPRECATED_FLOAT_UNSIGNED; SQLSTATE: HY000 Message: UNSIGNED for ... The MySQL server writes some error messages to its error log, and sends others to client ...
https://dev.mysql.com/type-conversion.html
Hexadecimal values are treated as binary strings if not compared to a number. If one of the arguments is a decimal value, comparison depends on the other argument. The arguments are compared as decimal values if the other argument is a decimal or ...
https://dev.mysql.com/replication-features-differing-tables.html
Between any of the decimal types DECIMAL, FLOAT, DOUBLE, and NUMERIC. A conversion from DECIMAL(M,D) to DECIMAL(M',D') where D' >= D and (M'-D') >= (M-D) is non-lossy; for any case where M' < M, D' < D, or both, only a lossy conversion can be made.
