How to set dependencies between DAGs in Airflow?
You can achieve this behavior using an operator called ExternalTaskSensor. Your task (B1) in DAG(B) will be scheduled and wait for a success on task (A2) in DAG(A) External Task Sensor documentation
etl
sqlite insert into table select * from
explicitly specify the column name in the INSERT clause, INSERT INTO destinationTable (risposta, data_ins) SELECT STATUS risposta, DATETIME(‘now’) data_ins FROM sourceTable
Import Excel spreadsheet columns into SQL Server database
Once connected to Sql Server 2005 Database, From Object Explorer Window, right click on the database which you want to import table into. Select Tasks -> Import Data. This is a simple tool and allows you to ‘map’ the incoming data into appropriate table. You can save the scripts to run again when needed.
Error 0xc0202049: Data Flow Task 1: Failure inserting into the read-only column
With all due respect to Kishore’s answer, that approach is valid if you’re modifying the packages. Since you’re using the import/export wizard, the more straight forward approach would be to check the Enable Identity Insert box on the Column Mappings tab. In the Import Export Wizard, after selecting the table for copy, click the Edit … Read more
How to convert result table to JSON array in MySQL
New solution: Built using Your great comments, thanks! SELECT JSON_ARRAYAGG(JSON_OBJECT(‘name’, name, ‘phone’, phone)) from Person; Old solution: With help from @Schwern I managed to put up this query, which seems to work! SELECT CONCAT( ‘[‘, GROUP_CONCAT(JSON_OBJECT(‘name’, name, ‘phone’, phone)), ‘]’ ) FROM person;
How to import load a .sql or .csv file into SQLite?
To import from an SQL file use the following: sqlite> .read <filename> To import from a CSV file you will need to specify the file type and destination table: sqlite> .mode csv <table> sqlite> .import <filename> <table>
What does ‘killed’ mean when processing a huge CSV with Python, which suddenly stops?
Exit code 137 (128+9) indicates that your program exited due to receiving signal 9, which is SIGKILL. This also explains the killed message. The question is, why did you receive that signal? The most likely reason is probably that your process crossed some limit in the amount of system resources that you are allowed to … Read more
MySQL – Rows to Columns
I’m going to add a somewhat longer and more detailed explanation of the steps to take to solve this problem. I apologize if it’s too long. I’ll start out with the base you’ve given and use it to define a couple of terms that I’ll use for the rest of this post. This will be … Read more