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  1. MariaDB Server
  2. MDEV-16593

mysql_stmt_insert_id returns first generated id when using MYSQL_TYPE_NULL

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    Description

      When inserting values into a table with auto_increment column via bulk operation, the result of mysql_stmt_insert_id() differs:
      In case buffer_type MYSQL_TYPE_NULL is used, or indicator variable was set to STMT_INDICATOR_IGNORE the values of first inserted row will be returned.

      Output from attached test case:

       Insert id with buffer_type MYSQL_TYPE_LONG: 2
      		 
       Max value for t1.a=2
      		 
       Insert id with buffer_type MYSQL_TYPE_NULL: 1
      		 
       Max value for t1.a=2
      		 
       Insert id with buffer_type STMT_INDICATOR_NULL: 1
      		 
       Max value for t1.a=2

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          sanja Oleksandr Byelkin added a comment -

          It is according to our documentation https://mariadb.com/kb/en/library/last_insert_id/
          if statement insert several rows, mysql_stmt_insert_id is assigned with first insert value

          sanja Oleksandr Byelkin added a comment - It is according to our documentation https://mariadb.com/kb/en/library/last_insert_id/ if statement insert several rows, mysql_stmt_insert_id is assigned with first insert value

          People

            sanja Oleksandr Byelkin
            georg Georg Richter
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              Updated:
              Resolved:

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