SQL server Concatanate

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In this following select query MachinaryName and Model are concatanated. If any of the field is empty then what should be done.
Please explain. Thank you for your valuable time

SQL

Select mp.MPCode, convert(varchar(102), mp.MaintenceStartDate, 106) as MaintenceStartDate,
mp.Description, mp.MaintencePlanType, mp.MDCode, md.MachinaryName+ '-' +md.Model as [Machine Name and Model]
from tblMaintencePlanEntry mp inner join tblMachinaryDetails md on mp.MDCode=md.MDCode  order by mp.MPCode desc

Posted 6-Jul-13 21:22pm

Sumon562

Updated 6-Jul-13 21:29pm

Abhishek Pant

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OriginalGriff · Accepted Answer · 2013-07-06T21:52:00

Solution 1

Use the ISNULL function:

SQL

Select mp.MPCode, convert(varchar(102), mp.MaintenceStartDate, 106) as MaintenceStartDate,
mp.Description, mp.MaintencePlanType, mp.MDCode, ISNULL(md.MachinaryName, '???') + '-' + ISNULL(md.Model, '???') as [Machine Name and Model]
from tblMaintencePlanEntry mp inner join tblMachinaryDetails md on mp.MDCode=md.MDCode  order by mp.MPCode desc

Posted 6-Jul-13 21:52pm

OriginalGriff

Comments

Sumon562 7-Jul-13 4:27am

Thank you Mr. OriginalGriff

OriginalGriff 7-Jul-13 4:40am

You're welcome!