Try this one:
SELECT a.in_ts,
a.jobCode,
b.name 'CompanyName',
a.jobName,
a.contactPerson,
a.cpDesignation,
a.location,
a.jobType,
a.monthlySalary,
a.qualification,
a.experience,
a.remarks
FROM tg_jobMaster a,
tg_companyMaster b
WHERE a.companyCode = b.companyCode
AND CONVERT(DATETIME,a.in_ts, 101) BETWEEN CONVERT(DATETIME,'12/30/2012',101) AND CONVERT(DATETIME,'03/07/2013',101)
AND isAllocated IS NULL
AND isExpired IS NULL
ORDER BY
a.jobCode DESC