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Editorial Team
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Asked: 2026-05-26T02:01:42+00:00

I am developing a web app using zend framework and the problem is about

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I am developing a web app using zend framework and the problem is about combining 2 sql queries for improving efficiency. My table structure is like this

>table message
id(int auto incr)
body(varchar)
time(datetime)

>table message_map
id(int auto incr)
message_id(forgain key from message table's id column)
sender(int ) comment 'user id of sender'
receiver(int) comment 'user id of receiver'

To get the code working, I am first inserting the message body and time to the message table and then using the last inserted id, I am inserting message sender and receiver to message_map table. Now what I want to do is to do this task in a single query as using one query will be more efficient. Is there any way to do so.

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1 Answer

  1. Editorial Team

    No there isn’t. You can insert in only one table at once.

    But I can’t imagine you need to insert so much messages that performance really becomes an issue. Even with these separate statements, any database can easily insert thousands of records a minute.

    bulk inserts
    Of course, when inserting multiple records in the same table, that’s a different matter. This is indeed possible in MySQL and it will make your query a lot faster. It will give you trouble, though, if you need to insert_ids from all those records.

    mysql_insert_id() returns the first id that is inserted in the last insert statement, if it is a bulk insert. So you could query all id’s that are >= that id. It should give you all records you just inserted, although the result may contain id’s that other people inserted between your insert and the following query for those ids.

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