Today, I want to talk about the data types of MySQL database

# Numeric class type 
int  Normal integer size  int(10) #  It is often used to store self incrementing ID, as well as linux Time stamp 
tinyint tinyint(1)     # It is often used to store status values 
float float(10) # Single precision floating point data  
double double(10) # Double precision floating point data 
decimal decimal(10,2)  # Fixed point decimals   Format  0.22,
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# Date or time type 
year #  Format  YYYY  Such as 2017 , year   Range ：1901-2155
date  #  date  YYYY-MM-DD  Such as  2019-02-27 1000-01-01~9999-12-3	
time  #  Time  HH:MM:SS  Such as  12:25:36
datetime #  Date time  YYYY-MM-DD HH:MM:SS  Such as ：2019-10-21 12:33:33
timestamp #  Date time  YYYY-MM-DD HH:MM:SS

# character string 
char # Fixed length 
varchar #  Indefinite length 
text  # Text 

## In terms of efficiency char  Higher