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Subqueries

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cbjjensen edited this page Oct 23, 2014 · 1 revision

Examples:

Find the students who are not enrolled in any classes.

Select student_id
From student.student
Where  student_id NOT IN (select student_id from student.enrollment);

Code examples contained herein are created by Chad Jensen (@cbjjensen) and/or Josh Kennedy (@JoshuaKennedy) and are placed in the public domain.

THE CODE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE CODE.

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