03 MySQL data types and operators of

01- Data Types

MySQL supports multiple data types, the main types of numeric, date / time types, and strings.

1.1 integer types

 Floating-point and fixed-point type 1.2 Type

Single precision floating point type (FLOAT) and double precision floating point type (DOUBLE).

 

 

 

 1.3 Date and Time Types

 

# Create a table 
the CREATE TABLE tmp3 (the y-YEAR); 

# insert data 
INSERT INTO tmp3 values ( ' 2010 ' ); 

# delete the data in the table 
DELECT FROM tmp3;

1.4 type a text string

 

 

 

 Common operator 02-

2.1 Arithmetic Operators

Plus +, subtraction -, multiplication *, division /, remainder%

2.2 Comparison Operators

Greater than> Less than <, = equal to, greater than or equal to> = Less than or equal <=, not equal! =

IN、BETWEEN AND、IS NULL、GREATEST、LEAST、LIKE、REGEEXP等。

2.3 Logical Operators

Non logic!, Logic AND &&, || logical OR or a logical exclusive OR XOR

2.4 operator operators

& Position and, bit, or |, non ~ bit, bit XOR ^, << left, right >>