![]() Information, see Section 12.6.1, “Arithmetic Operators”. Of the operands and the operations performed on them. Result of a calculation on numeric operands depends on the types Type, Storage (Bytes), Minimum Value Signed, Minimum Value Unsigned. Section 12.6, “Numeric Functions and Operators”. MySQL supports the SQL standard integer types INTEGER (or INT ) and SMALLINT. MySQL Queries : ALTER TABLE communitydb.Question ADD INDEX fkQuestionCustomeridx (authorId ASC) ALTER TABLE communitydb.Question ADD CONSTRAINT fkAnswerCustomer FOREIGN KEY (authorId) REFERENCES customerDb. Types, see Section 11.7, “Data Type Storage Requirements”.įor descriptions of functions that operate on numeric values, see MySQL supports INT/INTEGER data types including synonym INT4. The 11 in int (11) is just the 'display width', that only matters for UNSIGNED ZEROFILL columns. INT/INTEGER UNSIGNED, Signed: -231 to 231-1 (2 Gb), Unsigned: 0 to 232-1 (4 Gb). The int type is always 4 bytes (32 bits). Section 11.1.7, “Out-of-Range and Overflow Handling”.įor information about storage requirements of the numeric data Definition from mysql manual for the int data type: A normal-size integer. Values to columns and overflow during expression evaluation, see These typesįor information about how MySQL handles assignment of out-of-range Unsigned remain unsigned, so you have a problem when the result would be negative. ![]() ![]() MySQL supports all standard SQL numeric data types. MEDIUMINT, BIGINT 11.1.3 Fixed-Point Types (Exact Value) - DECIMAL, NUMERIC 11.1.4 Floating-Point Types (Approximate Value) - FLOAT, DOUBLE 11.1.5 Bit-Value Type - BIT 11.1.6 Numeric Type Attributes 11.1.7 Out-of-Range and Overflow Handling 90.6k 105 267 383 Add a comment 4 Answers Sorted by: 65 TL/DR: Yes, but it almost doesnt matter. without the minus sign (-), so it only stores positive numbers. Given what they are, unsigned means 'no sign', i.e. ZEROFILL is used to fill an integer with zeros so that all the numbers in the column have the same number of digits. 11.1.1 Numeric Data Type Syntax 11.1.2 Integer Types (Exact Value) - INTEGER, INT, SMALLINT, TINYINT, UNSIGNED is an optional attribute for integers in MySQL used to define only positive numbers. ![]()
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