sql - get Value that does not exist in another table and vice versa -
i have 2 table named lu_timepoint
holds default timepoints , operational table called tbl_data
. tbl_data
contains details candidate , timepoint when has come lab test. timepoint range -30 mins 24 hrs
the lu_timepoint
table lookup table default timepoints. need write query check whether timepoint in tbl_data
exist in lu_timepoint
table , if not there need have value false in column called checked. likewise if timepoint in lu_timepoint table not exist in tbl_data
table need have value false in column checked. else true in checked column.
i tried left join i'm getting more rows count due incorrect join statement. below code used candidate id timepoint not equal other table
select distinct pt, pctpt tbl_data s left join lu_timepoint t on s.study = t.study s.pctpt = t.timepoint
data attached in below link... table data
if want records doesn't exists in joined tabled , vice versa, can use full outer join
display distinct values each table.
specifying database using , providing tables structures , of data build final query.
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