ODPS Error: Illegal Union Operation - Type Mismatch - Fix Guide

The error message "ODPS-0130241: Illegal union operation - type mismatch for UNION, left has 10 columns while right has 7 columns" means that you are trying to perform a UNION operation on two datasets that have a different number of columns.\n\nIn a UNION operation, both datasets must have the same number of columns, and the columns must also have compatible data types.\n\nTo fix this error, you need to ensure that both datasets have the same number of columns and that the data types of the corresponding columns match.\n\nHere are a few possible solutions:\n\n1. Add three additional columns to the dataset on the right side of the UNION operation to match the number of columns on the left side. Make sure that the data types of these columns match the corresponding columns on the left side.\n\n2. Remove three columns from the dataset on the left side of the UNION operation to match the number of columns on the right side. Make sure that the remaining columns on the left side have compatible data types with the corresponding columns on the right side.\n\n3. Use a different operation, such as JOIN or CROSS JOIN, depending on your specific requirements.\n\nRemember to check the column names, data types, and the number of columns in both datasets to ensure they are compatible before performing a UNION operation.