Graph display how can i do

datasource is : mysql

my query sql is : SELECT UNIX_TIMESTAMP(T.createdate) as time_sec,T.type_value as VALUE,T.col_type as metric FROM mytest T WHERE T.col_type = ‘A’

query result isimage

bug grafana view is

how can i do that let graph display

try returning a value column (lowercase). Also make sure the time points are within the dashboard time range (and include a $__timeFilter macro)

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Thank you very much for your answer