How Can I Update Multiple SQL Records Simultaneously?

Updating Multiple SQL Records Simultaneously

In SQL, it's possible to update multiple records in a single query. Let's consider a table named config with two columns: config_name and config_value. The query you attempted to execute is incorrect.

To update records efficiently, you can utilize the following approaches:

Multi-Table Update Syntax

This method involves joining multiple tables on specified criteria and then updating the columns in each table:

UPDATE config t1 JOIN config t2
    ON t1.config_name = 'name1' AND t2.config_name = 'name2'
   SET t1.config_value = 'value',
       t2.config_value = 'value2';

Conditional Update

Alternatively, you can use a conditional statement to update values based on different conditions:

UPDATE config
   SET config_value = CASE config_name 
                      WHEN 'name1' THEN 'value' 
                      WHEN 'name2' THEN 'value2' 
                      ELSE config_value
                      END
 WHERE config_name IN('name1', 'name2');

These methods allow you to update multiple records in one query, streamlining your SQL operations.

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