Queries not working in mysql

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Following is My SQL server queries

SQL

select top 100 COUNT(distinct cast(ip as varchar) + cast(sessionid as varchar)) as ActiveUsr from tblTrackingRTT tr where tr.parent=@parent and
    tr.site=@site and tr.ms_date>=DATEADD(MINUTE, -5, getdate())

I converted this query to Mysql

SQL

select  COUNT(distinct cast(ip as varchar) + cast(sessionid as varchar(1))) as ActiveUsr from tblTrackingRTT tr where tr.parent=p_parent and
    tr.site=p_site and tr.ms_date>=TIMESTAMPADD(MINUTE, -5, now()) Limit 100;

its give me following error
"Select is not valid position for this server position excepting : ("

What I have tried:

everything i tried i didnt get it

Posted 3-Nov-19 23:14pm

Akshay malvankar

Updated 4-Nov-19 1:55am

Maciej Los

v2

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Maciej Los · Accepted Answer · 2019-11-04T01:55:00

First of all, i'd start from counting the number of opening and closing parenthesis...

Second of all, i'd use CONCAT[^] function to return concatenated string and use proper data type:

Quote:
The target type can be any one of the following types: BINARY, CHAR, DATE, DATETIME, TIME, DECIMAL, SIGNED, UNSIGNED .

SQL

SELECT COUNT(distinct CONCAT(CAST(ip as char), CAST(sessionid as char))) AS ...