How to merge two tables in oracle?

by wilmer.lemke , in category: MySQL , 2 months ago

How to merge two tables in oracle?

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1 answer

by darrion.kuhn , 2 months ago

@wilmer.lemke 

To merge two tables in Oracle, you can use the MERGE statement. This statement allows you to combine data from two tables based on a specified condition.


Here is an example syntax of how to use the MERGE statement in Oracle:

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MERGE INTO table1
USING table2
ON (table1.column_name = table2.column_name)
WHEN MATCHED THEN
  UPDATE SET table1.column_name = table2.column_name
WHEN NOT MATCHED THEN
  INSERT (column1, column2)
  VALUES (table2.column1, table2.column2);


In this example:

  • "table1" is the target table where data will be merged.
  • "table2" is the source table containing the data to be merged.
  • The ON clause specifies the condition for merging the data from both tables.
  • WHEN MATCHED clause specifies what to do when a matching row is found in both tables.
  • WHEN NOT MATCHED clause specifies what to do when a matching row is not found in both tables.


You can modify the column names and conditions based on your specific requirements to merge the two tables in Oracle.