extract WHERE condition value; fix keyword parse

[tuohai666]

#168

[codecov-commenter]

Codecov Report

Merging #311 (90a4c66) into master (f69d432) will not change coverage.
The diff coverage is 0.00%.

@@          Coverage Diff           @@
##           master    #311   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files         382     382           
  Lines        6929    6939   +10     
  Branches     1218    1220    +2     
======================================
- Misses       6929    6939   +10     

Impacted Files	Coverage Δ
...a/hmily/tac/sqlcompute/impl/ExpressionHandler.java	0.00% <0.00%> (ø)
...c/sqlcompute/impl/HmilyDeleteSQLComputeEngine.java	0.00% <0.00%> (ø)
...mily/tac/sqlcompute/impl/HmilySQLComputeUtils.java	0.00% <0.00%> (ø)
...c/sqlcompute/impl/HmilyUpdateSQLComputeEngine.java	0.00% <0.00%> (ø)

---

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 f69d432...90a4c66. Read the comment docs.