sql_variant issue with String type

[AfsanehR-zz]

fixes issue #439

[codecov-io]

Codecov Report

Merging #442 into dev will decrease coverage by 0.06%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##                dev     #442      +/-   ##
============================================
- Coverage     46.37%   46.31%   -0.07%     
+ Complexity     2200     2198       -2     
============================================
  Files           108      108              
  Lines         25212    25260      +48     
  Branches       4165     4177      +12     
============================================
+ Hits          11692    11699       +7     
- Misses        11493    11540      +47     
+ Partials       2027     2021       -6

Flag	Coverage Δ	Complexity Δ
#JDBC41	46.04% <100%> (-0.07%)	2184 <0> (-2)
#JDBC42	46.19% <100%> (-0.01%)	2195 <0> (+3)

Impacted Files	Coverage Δ	Complexity Δ
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	62.81% <100%> (-0.68%)	0 <0> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerException.java	75.6% <0%> (-1.63%)	28% <0%> (-1%)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	44.04% <0%> (-0.68%)	103% <0%> (-2%)
.../microsoft/sqlserver/jdbc/SQLServerDataSource.java	46.61% <0%> (-0.52%)	66% <0%> (ø)
...ncurrentlinkedhashmap/ConcurrentLinkedHashMap.java	42.2% <0%> (-0.22%)	46% <0%> (ø)
...om/microsoft/sqlserver/jdbc/SQLServerBulkCopy.java	52.35% <0%> (-0.2%)	238% <0%> (-1%)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	54.08% <0%> (-0.17%)	0% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.98% <0%> (-0.17%)	242% <0%> (-1%)
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	50.82% <0%> (-0.09%)	161% <0%> (ø)
... and 7 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 97ab207...e207571. Read the comment docs.