[jira] [Resolved] (AIRFLOW-809) SqlAlchemy is_ ColumnOperator Causing Errors in MSSQL

["Bolke de Bruin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bolke de Bruin resolved AIRFLOW-809.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.9.0

Issue resolved by pull request #2022
[https://github.com/apache/incubator-airflow/pull/2022]

> SqlAlchemy is_ ColumnOperator Causing Errors in MSSQL
> -----------------------------------------------------
>
>                 Key: AIRFLOW-809
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-809
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: models, scheduler
>         Environment: Distributor ID: Ubuntu
> Description:    Ubuntu 14.04.5 LTS
> Release:        14.04
> Codename:       trusty
> Backend: MSSQL
> Executor: LocalExecutor
>            Reporter: Chad T Henderson
>            Assignee: Chad T Henderson
>             Fix For: 1.9.0
>
>
> Starting the scheduler produces the following error, which I believe is caused by the use of the _is ColumnOperator when checking the value of the external_trigger field on the DagRun object.
> Error Text:
> sqlalchemy.exc.ProgrammingError: (pyodbc.ProgrammingError) ('42000', "[42000] [FreeTDS][SQL Server]Incorrect syntax near '0'. (102) (SQLExecDirectW)") [SQL: 'SELECT TOP 1 dag_run.state AS dag_run_state, dag_run.id AS dag_run_id, dag_run.dag_id AS dag_run_dag_id, dag_run.execution_date AS dag_run_execution_date, dag_run.start_date AS dag_run_start_date, dag_run.end_date AS dag_run_end_date, dag_run.run_id AS dag_run_run_id, dag_run.external_trigger AS dag_run_external_trigger, dag_run.conf AS dag_run_conf \nFROM dag_run \nWHERE dag_run.dag_id = ? AND dag_run.external_trigger IS 0 ORDER BY dag_run.execution_date DESC'] [parameters: ('append_to_history',)]



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