SQLite add index

open SQLite Studio, Create a new table student, Add a few fields ：id、name、age、address

Click on Create index

The following interface will be opened

Sort( Sort )

ASC Expressing ascending order

DESC Representation of descending order

Here in the collation

Collation（ Sort rule ）

RTRIM      Clear the space character at the end of the string

NOCASE     Disable case sensitivity

BINARY     Binary system

 

SQL sentence ：

example 1 

CREATE INDEX findName ON student (
	name COLLATE BINARY ASC
);

COLLATE It's sort rules

example 2

CREATE INDEX findTestTime ON sampleRecord (
	TestTime ASC
);

findTestTime Is the index name ,

sampleRecord Is the name of the table ,

TestTime Field name ,

ASC Represents ascending order

end