Here Im trying to add extra row by using union query between data and result data.
select color, item, sum(qua) from inventory
Group by color, item
UNION
Select '----','----','----'
Union
select Count(color), 'total', sum(qua)
from inventory
Result would be:
ITME COLOR QUA
---- ----- ----
chair Black 520
chair pink 1028
chair Red 1050
chair Yellow 524
table Black 1048
table Blue 124
table pink 624
table Red 524
table Yellow 548
----- ----- ----- <----This extra row.
13 total 5990
I used above query but It show me Data type mismatch error. Conversion failed when converting the varchar value '----' to data type int. I'm using Microsoft SQL server management studio r2 2008
Use UNION ALL
instead of UNION
UNION The UNION command is used to select related information from two tables, much like the JOIN command. However, when using the UNION command all selected columns need to be of the same data type. With UNION, only distinct values are selected.
UNION ALL The UNION ALL command is equal to the UNION command, except that UNION ALL selects all values.
You should always be using UNION ALL
unless you are removing duplicates.