SQL statements are used to perform fuzzy queries based on health check characters and sorted by matching degree.
SQL statements are used to perform fuzzy queries based on health check characters and sorted by matching degree.
The Code is as follows:
IF OBJECT_ID ('tb') IS NOT NULL DROP TABLE TB
GO
Create table tb (id int identity (1, 1), value nvarchar (100 ))
INSERT tb select n 'China'
Union all select n 'China'
Union all select n 'people of China'
Union all select n 'Japan'
Union all select n 'Japanese'
Union all select n 'someone in my heart'
Union all select n 'people net'
Union all select n 'China is a great country'
Union all select n' we are ALL Chinese, ALL Chinese descendants, ALL dragon descendant'
IF OBJECT_ID ('fn _ SplitStringToROWS ') is not null drop function fn_SplitStringToROWS
GO
Create function fn_SplitStringToROWS
(
@ Str NVARCHAR (100)
)
RETURNS @ t TABLE (v NVARCHAR (2 ))
AS
BEGIN
DECLARE @ I INT
SET @ I = 1
WHILE @ I <= LEN (@ str)
BEGIN
INSERT @ t select substring (@ str, @ I, 1)
SET @ I = @ I + 1
END
RETURN
END
GO
SELECT * from dbo. fn_SplitStringToROWS (N 'China ')
DECLARE @ searchSTR NVARCHAR (20)
SET @ searchSTR = N 'China'
Select id, [VALUE] FROM tb
Inner join fn_SplitStringToROWS (@ searchSTR) B
On charindex (B. v, a. VALUE)> 0
Where value like n' % [Chinese] %'
Group by id, VALUE
Order by count (DISTINCT v) DESC
Drop table tb
/*
V
----
Medium
Country
Person
(3 data columns are affected)
ID VALUE
----------- Begin ---------------------------------------------------------------------------------------------------------------
2 Chinese
3. Chinese people
9 we are all Chinese, both descendants of the Chinese people and descendants of the Chinese people.
6. Some girls in my heart
1 China
8. China is a great country
5. Japanese
7 People's Network
(8 Data columns are affected)
*/
