[couler-bug-fix-issue-1766] update the env to respect the bool type (#1825)
[couler-bug-fix-issue-1766] update the env to respect the bool type (#1825)

* update the env to respect the bool type

* update the env to respect the bool type

sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow