mysql_insert_id() - mysql/mysql.h

 Returns the value generated for an
        AUTO_INCREMENT column by the previous
        INSERT or
        UPDATE statement. Use this
        function after you have performed an
        INSERT statement into a table
        that contains an AUTO_INCREMENT field, or
        have used INSERT or
        UPDATE to set a column value with
        LAST_INSERT_ID(expr).AUTO_INCREMENTINSERTINSERTUPDATEUPDATEINSERTINSERTAUTO_INCREMENTINSERTINSERTUPDATEUPDATELAST_INSERT_ID(expr)LAST_INSERT_ID(expr)exprexprThe return value of
        mysql_insert_id() is always zero
        unless explicitly updated under one of the following conditions:mysql_insert_id()mysql_insert_id()INSERT statements that store
            a value into an AUTO_INCREMENT column.
            This is true whether the value is automatically generated by
            storing the special values NULL or
            0 into the column, or is an explicit
            nonspecial value.
          
            In the case of a multiple-row
            INSERT statement,
            mysql_insert_id() returns
            the first automatically generated
            AUTO_INCREMENT value that was
            successfully inserted.
          
            If no rows are successfully inserted,
            mysql_insert_id() returns 0.
          
            If an INSERT
            ... SELECT statement is executed, and no
            automatically generated value is successfully inserted,
            mysql_insert_id() returns
            the ID of the last inserted row.
          
            If an INSERT
            ... SELECT statement uses
            LAST_INSERT_ID(expr),
            mysql_insert_id() returns
            expr.
          
INSERT statements that
            generate an AUTO_INCREMENT value by
            inserting
            LAST_INSERT_ID(expr)
            into any column or by updating any column to
            LAST_INSERT_ID(expr).
          
            If the previous statement returned an error, the value of
            mysql_insert_id() is
            undefined.INSERT statements that store
            a value into an AUTO_INCREMENT column.
            This is true whether the value is automatically generated by
            storing the special values NULL or
            0 into the column, or is an explicit
            nonspecial value.
          
            In the case of a multiple-row
            INSERT statement,
            mysql_insert_id() returns
            the first automatically generated
            AUTO_INCREMENT value that was
            successfully inserted.
          
            If no rows are successfully inserted,
            mysql_insert_id() returns 0.
          
            If an INSERT
            ... SELECT statement is executed, and no
            automatically generated value is successfully inserted,
            mysql_insert_id() returns
            the ID of the last inserted row.
          
            If an INSERT
            ... SELECT statement uses
            LAST_INSERT_ID(expr),
            mysql_insert_id() returns
            expr.
          
INSERT statements that
            generate an AUTO_INCREMENT value by
            inserting
            LAST_INSERT_ID(expr)
            into any column or by updating any column to
            LAST_INSERT_ID(expr).
          
            If the previous statement returned an error, the value of
            mysql_insert_id() is
            undefined.INSERT statements that store
            a value into an AUTO_INCREMENT column.
            This is true whether the value is automatically generated by
            storing the special values NULL or
            0 into the column, or is an explicit
            nonspecial value.INSERT statements that store
            a value into an AUTO_INCREMENT column.
            This is true whether the value is automatically generated by
            storing the special values NULL or
            0 into the column, or is an explicit
            nonspecial value.INSERTINSERTAUTO_INCREMENTNULL0In the case of a multiple-row
            INSERT statement,
            mysql_insert_id() returns
            the first automatically generated
            AUTO_INCREMENT value that was
            successfully inserted.
          
            If no rows are successfully inserted,
            mysql_insert_id() returns 0.In the case of a multiple-row
            INSERT statement,
            mysql_insert_id() returns
            the first automatically generated
            AUTO_INCREMENT value that was
            successfully inserted.INSERTINSERTmysql_insert_id()mysql_insert_id()AUTO_INCREMENTIf no rows are successfully inserted,
            mysql_insert_id() returns 0.mysql_insert_id()mysql_insert_id()If an INSERT
            ... SELECT statement is executed, and no
            automatically generated value is successfully inserted,
            mysql_insert_id() returns
            the ID of the last inserted row.If an INSERT
            ... SELECT statement is executed, and no
            automatically generated value is successfully inserted,
            mysql_insert_id() returns
            the ID of the last inserted row.INSERT
            ... SELECTINSERT
            ... SELECTmysql_insert_id()mysql_insert_id()If an INSERT
            ... SELECT statement uses
            LAST_INSERT_ID(expr),
            mysql_insert_id() returns
            expr.If an INSERT
            ... SELECT statement uses
            LAST_INSERT_ID(expr),
            mysql_insert_id() returns
            expr.INSERT
            ... SELECTINSERT
            ... SELECTLAST_INSERT_ID(expr)LAST_INSERT_ID(expr)exprexprmysql_insert_id()mysql_insert_id()exprexprINSERT statements that
            generate an AUTO_INCREMENT value by
            inserting
            LAST_INSERT_ID(expr)
            into any column or by updating any column to
            LAST_INSERT_ID(expr).INSERT statements that
            generate an AUTO_INCREMENT value by
            inserting
            LAST_INSERT_ID(expr)
            into any column or by updating any column to
            LAST_INSERT_ID(expr).INSERTINSERTAUTO_INCREMENTLAST_INSERT_ID(expr)LAST_INSERT_ID(expr)exprexprLAST_INSERT_ID(expr)LAST_INSERT_ID(expr)exprexprIf the previous statement returned an error, the value of
            mysql_insert_id() is
            undefined.If the previous statement returned an error, the value of
            mysql_insert_id() is
            undefined.mysql_insert_id()mysql_insert_id()The return value of
        mysql_insert_id() can be
        simplified to the following sequence:mysql_insert_id()mysql_insert_id()If there is an AUTO_INCREMENT column, and
            an automatically generated value was successfully inserted,
            return the first such value.
          
            If
            LAST_INSERT_ID(expr)
            occurred in the statement, return
            expr, even if there was an
            AUTO_INCREMENT column in the affected
            table.
          
            The return value varies depending on the statement used.
            When called after an INSERT
            statement:



                If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.



            When called after an
            INSERT
            ... ON DUPLICATE KEY UPDATE statement:



                If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.If there is an AUTO_INCREMENT column, and
            an automatically generated value was successfully inserted,
            return the first such value.
          
            If
            LAST_INSERT_ID(expr)
            occurred in the statement, return
            expr, even if there was an
            AUTO_INCREMENT column in the affected
            table.
          
            The return value varies depending on the statement used.
            When called after an INSERT
            statement:



                If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.



            When called after an
            INSERT
            ... ON DUPLICATE KEY UPDATE statement:



                If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.If there is an AUTO_INCREMENT column, and
            an automatically generated value was successfully inserted,
            return the first such value.If there is an AUTO_INCREMENT column, and
            an automatically generated value was successfully inserted,
            return the first such value.AUTO_INCREMENTIf
            LAST_INSERT_ID(expr)
            occurred in the statement, return
            expr, even if there was an
            AUTO_INCREMENT column in the affected
            table.If
            LAST_INSERT_ID(expr)
            occurred in the statement, return
            expr, even if there was an
            AUTO_INCREMENT column in the affected
            table.LAST_INSERT_ID(expr)LAST_INSERT_ID(expr)exprexprexprexprAUTO_INCREMENTThe return value varies depending on the statement used.
            When called after an INSERT
            statement:



                If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.



            When called after an
            INSERT
            ... ON DUPLICATE KEY UPDATE statement:



                If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.The return value varies depending on the statement used.
            When called after an INSERT
            statement:INSERTINSERTIf there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.If there is an AUTO_INCREMENT column
                in the table, and there were some explicit values for
                this column that were successfully inserted into the
                table, return the last of the explicit values.AUTO_INCREMENTWhen called after an
            INSERT
            ... ON DUPLICATE KEY UPDATE statement:INSERT
            ... ON DUPLICATE KEY UPDATEINSERT
            ... ON DUPLICATE KEY UPDATEIf there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.If there is an AUTO_INCREMENT column
                in the table and there were some explicit successfully
                inserted values or some updated values, return the last
                of the inserted or updated values.AUTO_INCREMENTmysql_insert_id() returns
        0 if the previous statement does not use an
        AUTO_INCREMENT value. If you need to save the
        value for later, be sure to call
        mysql_insert_id() immediately
        after the statement that generates the value.mysql_insert_id()mysql_insert_id()0AUTO_INCREMENTmysql_insert_id()mysql_insert_id()The value of mysql_insert_id()
        is affected only by statements issued within the current client
        connection. It is not affected by statements issued by other
        clients.mysql_insert_id()mysql_insert_id()The LAST_INSERT_ID() SQL function
        will contain the value of the first automatically generated
        value that was successfully inserted.
        LAST_INSERT_ID() is not reset
        between statements because the value of that function is
        maintained in the server. Another difference from
        mysql_insert_id() is that
        LAST_INSERT_ID() is not updated
        if you set an AUTO_INCREMENT column to a
        specific nonspecial value. See
        Section 13.14, “Information Functions”.LAST_INSERT_ID()LAST_INSERT_ID()LAST_INSERT_ID()LAST_INSERT_ID()mysql_insert_id()mysql_insert_id()LAST_INSERT_ID()LAST_INSERT_ID()AUTO_INCREMENTSection 13.14, “Information Functions”mysql_insert_id() returns
        0 following a
        CALL statement for a stored
        procedure that generates an AUTO_INCREMENT
        value because in this case
        mysql_insert_id() applies to
        CALL and not the statement within
        the procedure. Within the procedure, you can use
        LAST_INSERT_ID() at the SQL level
        to obtain the AUTO_INCREMENT value.mysql_insert_id()mysql_insert_id()0CALLCALLAUTO_INCREMENTmysql_insert_id()mysql_insert_id()CALLCALLLAST_INSERT_ID()LAST_INSERT_ID()AUTO_INCREMENTThe reason for the differences between
        LAST_INSERT_ID() and
        mysql_insert_id() is that
        LAST_INSERT_ID() is made easy to
        use in scripts while
        mysql_insert_id() tries to
        provide more exact information about what happens to the
        AUTO_INCREMENT column.LAST_INSERT_ID()LAST_INSERT_ID()mysql_insert_id()mysql_insert_id()LAST_INSERT_ID()LAST_INSERT_ID()mysql_insert_id()mysql_insert_id()AUTO_INCREMENT

Syntax

my_ulonglong mysql_insert_id(MYSQL *mysql)

Example

Output / Return Value

 Described in the preceding discussion.

Limitations

Alternatives / See Also

Reference