Can Multiple MySQL INSERT Statements Be Combined in a Single Query?

Combining Multiple MySQL INSERT Statements in a Single Query

The question arises whether it is valid to combine multiple MySQL INSERT statements into a single query, as demonstrated in the following code:

<code class="php">$string1= "INSERT INTO....;";
$string1 .= "INSERT INTO....;";
$string1 .= "INSERT INTO....;";
mysql_query($string1) or die(mysql_error()); </code>

However, it is recommended to avoid this approach and instead employ a more efficient method of inserting multiple rows. The preferred approach is to use a single INSERT statement with multiple VALUES clauses, as shown in the following examples:

<code class="php">INSERT INTO a VALUES (1,23),(2,34),(4,33);
INSERT INTO a VALUES (8,26),(6,29);</code>

This approach offers several advantages:

• Improved Performance: Executing multiple INSERT statements in a single query can result in slower performance compared to using a single INSERT statement with multiple VALUES clauses.
• Reduced Network Traffic: Sending a single query with all the necessary insertions reduces network traffic and improves response times.
• Enhanced Code Readability: Combining multiple INSERT statements into a single string can make the code less readable and harder to maintain.

The above is the detailed content of Can Multiple MySQL INSERT Statements Be Combined in a Single Query?. For more information, please follow other related articles on the PHP Chinese website!