reverse where query in mysql2 - mysql2

Question

I want to find records using like query but in reverse mode
For exa: I have one string ts5e434
And now in databse I have one column called geohash and its contan comma seperated values
1) "ts5e4,ts5,ts5e434"
2) "ab,ye"
3) "ts,thh"
4) "t"
So here I want to get 1, 3 and 4 no records because its partially matching string
exa like clause
SELECT
*
FROM
service_geohashes
WHERE
'ts5e434' LIKE geohashes
Can anyone help me
Thanks in advance

Answer 1

I created function "LikeAny" in MSSQL which looks like:
CREATE FUNCTION [dbo].[LikeAny](#text nvarchar(MAX), #delimiter varchar(20), #comparestring nvarchar(MAX))
RETURNS BIT AS
BEGIN
DECLARE #LikeAny BIT = 0,
#TempString nvarchar(MAX)
DECLARE MY_CURSOR CURSOR
LOCAL STATIC READ_ONLY FORWARD_ONLY
FOR
SELECT value FROM STRING_SPLIT(#text, #delimiter)
OPEN MY_CURSOR
FETCH NEXT FROM MY_CURSOR INTO #TempString
WHILE ##FETCH_STATUS = 0
BEGIN
--Do something with Id here
IF (#TempString <> '' AND #comparestring LIKE N'%' + #TempString + '%')
BEGIN
SET #LikeAny = 1
BREAK;
END
ELSE
FETCH NEXT FROM MY_CURSOR INTO #TempString
END
CLOSE MY_CURSOR
DEALLOCATE MY_CURSOR
RETURN #LikeAny
END
If you use this in your example, it should look like:
SELECT
*
FROM
service_geohashes
WHERE
[dbo].[LikeAny](geohashes ,',', 'ts5e434') = 1
I tried also to convert the function above into MySQL but I had no option to test it on real environment
it looks like:
DROP FUNCTION IF EXISTS LikeAnyCommaDelimited;
DELIMITER $$
CREATE FUNCTION LikeAnyCommaDelimited(p_text longtext, p_comparestring longtext)
RETURNS TINYINT
DETERMINISTIC
BEGIN
DECLARE v_finished INTEGER DEFAULT 0;
DECLARE v_LikeAny TINYINT DEFAULT 0;
DECLARE v_TempString longtext;
DECLARE v_SQL longtext;
drop temporary table if exists tempa;
drop temporary table if exists tempb;
CREATE TEMPORARY TABLE tempa( txt text );
CREATE TEMPORARY TABLE tempb( val char(255) );
insert into tempa values(p_text);
set v_SQL = concat("insert into tempb (val) values ('", replace(( select group_concat(distinct txt) as data from tempa), ',', "'),('"),"');");
prepare statement1 from #sql;
execute statement1;
DEClARE split_cursor CURSOR FOR
SELECT value FROM (select distinct(val) as value from tempb);
DECLARE CONTINUE HANDLER
FOR NOT FOUND SET v_finished = 1;
OPEN split_cursor;
get_string: LOOP
FETCH split_cursor INTO v_TempString;
IF v_finished = 1 THEN
LEAVE get_string;
END IF;
IF (v_TempString <> '' AND p_comparestring LIKE N'%' + CONCAT(v_TempString , '%') THEN
BEGIN
SET v_LikeAny = 1;
LEAVE get_string;
END
END LOOP get_string;
CLOSE split_cursor;
END$$
DELIMITER ;
Let me know if you have any issues.