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Editorial Team
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Asked: 2026-06-15T08:53:41+00:00

I’m trying to populate my temp table ( emp_department_1 ) with 4 columns (

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I’m trying to populate my temp table (emp_department_1) with 4 columns (fname, minit, lname, bdate) from my exsisting table (employee). Where the dno=1 from the employee table. Any suggestions?

mysql> select * from employee;
+----------+-------+---------+-----------+------------+--------------------------+------+--------+-----------+-----+
| Fname    | Minit | Lname   | SSN       | Bdate      | Address                  | Sex  | Salary | Superssn  | Dno |
+----------+-------+---------+-----------+------------+--------------------------+------+--------+-----------+-----+
| John     | B     | Smith   | 123456789 | 1955-01-09 | 731 Fondren, Cary, NC    | M    |  31500 | 333445555 |   5 |
| Franklin | T     | Wong    | 333445555 | 1945-12-08 | 638 Voss, Cary, NC       | M    |  42000 | 888665555 |   5 |
| Alicia   | J     | Zelaya  | 999887777 | 1958-07-19 | 3321 Castle, Apex, NC    | F    |  25000 | 987654321 |   4 |
| Jennifer | S     | Wallace | 987654321 | 1931-06-20 | 291 Berry, Garner, NC    | F    |  43000 | 888665555 |   4 |
| Rameish  | K     | Naraya  | 666884444 | 1952-09-15 | 975 Fire Oak, Angier, NC | M    |  39900 | 333445555 |   5 |
| Joyce    | A     | English | 453453453 | 1962-07-31 | 5631 Rice, Raleigh, NC   | F    |  26250 | 333445555 |   5 |
| Ahmad    | V     | Jabbar  | 987987987 | 1959-03-29 | 980 Dallas, Cary, NC     | M    |  25000 | 987654321 |   4 |
| James    | E     | Borg    | 888665555 | 1927-11-10 | 450 Stone, Cary, NC      | M    |  55000 | NULL      |   1 |
+----------+-------+---------+-----------+------------+--------------------------+------+--------+-----------+-----+

James E Borg is the only one where dno=1.

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1 Answer

  1. Editorial Team

    You merely need a simple INSERT INTO ... SELECT...FROM statement. It is recommended to list the columns in (), assuming the order of columns in emp_department_1 does not exactly match the order I have the SELECT in.

    INSERT INTO emp_department_1 (fname, minit, lname, bdate)
  SELECT fname, minit, lname, bdate FROM employee WHERE dno = 1

    Review the MySQL syntax reference on the INSERT...SELECT syntax.

    Update

    Since this is to be a temporary table, not yet created, use a CREATE TEMPORARY TABLE ... SELECT syntax:

    CREATE TEMPORARY TABLE emp_department_1
   SELECT fname, minit, lname, bdate FROM employee WHERE dno = 1

    It is not necessary to define the column types in the temporary table, though you can if needed, and also create indexes if needed.

    CREATE TEMPORARY TABLE emp_department_1 (
  fname VARCHAR(64) NOT NULL,
  minit VARCHAR(64) NULL,
  lname VARCHAR(64) NOT NULL,
  bdate DATE NOT NULL,
  PRIMARY KEY (fname, lname, bdate) /* not that you would actually do this */
) SELECT fname, minit, lname, bdate FROM employee WHERE dno = 1
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