mysql data display system.byte in datatable during runtime in vb.net

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hallo everyone,

i have an select query where i select one column from mysql table database and store it into datatable before i display it in crystal report. when i run my project, there is no error Occurred, but there is no data display in the crystal report, when i set a breakpoint and check my datatable contain, in the column that i want to display write something like "System.byte" suppose to be display data that i select from the database. why it is happend? is any others way for me to fix it?

SELECT CONCAT(LPAD(FLOOR(extra_ot/60),2,'0'),':',LPAD((extra_ot MOD 60 ),2,'0'),':00') AS Extra_O

Posted 11-Dec-13 21:06pm

JOE Heart Under Blade

Updated 18-Jan-18 7:41am

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Barış Güvenkaya · Accepted Answer · 2015-05-11T19:40:00

Solution 1

You have to cast it as a char first.

SQL

SELECT CONCAT(cast(LPAD(FLOOR(extra_ot/60),2,'0') as char(20)),':',cast(LPAD((extra_ot MOD 60 ),2,'0') as char(20)),':00') AS Extra_O

Posted 11-May-15 19:40pm

Barış Güvenkaya

A Jorge · Accepted Answer · 2018-01-18T07:41:00

Solution 2

Adding this in connection settings did the trick : 

;Allow User Variables=True;Respect Binary flags=false

Posted 18-Jan-18 7:41am

A Jorge