Fix panic when hyphen-table

[k1LoW]

Fix #125

[codecov]

Codecov Report

Merging #126 into master will decrease coverage by 1.22%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #126      +/-   ##
==========================================
- Coverage   72.27%   71.04%   -1.23%     
==========================================
  Files          12       12              
  Lines        2525     2525              
==========================================
- Hits         1825     1794      -31     
- Misses        534      571      +37     
+ Partials      166      160       -6

Impacted Files	Coverage Δ
drivers/sqlite/sqlite.go	87.96% <100%> (ø)	⬆️
drivers/mysql/mysql.go	82.79% <100%> (ø)	⬆️
datasource/datasource.go	28.81% <0%> (-26.28%)	⬇️

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