validate row: MySQL ibis.expr.operations.IfNull Exception

[nj1973]

Any validate row command on MySQL (both --hash and --concat) throws an exception:

...
  File "/home/user/professional-services-data-validator/env/lib/python3.10/site-packages/ibis/backends/base_sqlalchemy/compiler.py", line 1362, in get_result
    translated = self.translate(self.expr)
  File "/home/user/professional-services-data-validator/env/lib/python3.10/site-packages/ibis/backends/base_sqlalchemy/compiler.py", line 1403, in translate
    raise com.OperationNotDefinedError(
ibis.common.exceptions.OperationNotDefinedError: No translation rule for <class 'ibis.expr.operations.IfNull'>

When complete we need to enable the integration test for this problem. Search for "issue-776" in tests/system/data_sources/test_mysql.py to action this (there are two disabled tests). Enabling these test is blocked by issue #759.

[nehanene15]

This has been resolved in #812 and uncommented from MySQL tests.