Returning ERROR: column does not exist in where clause (POSTGRESQL)

Question

I need to select a table, but it's keeping returning error when i tried to using "where" for some column.

here's my code, and i attach an image file for detail.

sirima=# select * from sirima.program_studi;
 kode |      nama       |  jenis_kelas  |          nama_fakultas          | jenjang
------+-----------------+---------------+---------------------------------+---------
    1 | Kedokteran      | Reguler       | Kedokteran                      | S1
    2 | Matematika      | Reguler       | Matematika dan Pengetahuan Alam | S1
    3 | Teknik Sipil    | Reguler       | Teknik                          | S1
    4 | Ilmu Komputer   | Reguler       | Ilmu Komputer                   | S1
    5 | Kedokteran      | Reguler       | Kedokteran                      | S2
    6 | Fisika          | Reguler       | Matematika dan Pengetahuan Alam | S2
    7 | Teknik Sipil    | Reguler       | Teknik                          | S2
    8 | Ilmu Komputer   | Reguler       | Ilmu Komputer                   | S2
    9 | Kedokteran      | Reguler       | Kedokteran                      | S3
   10 | Biologi         | Reguler       | Matematika dan Pengetahuan Alam | S3
   11 | Teknik Sipil    | Reguler       | Teknik                          | S3
   12 | Ilmu Komputer   | Reguler       | Ilmu Komputer                   | S3
   13 | Kedokteran      | Internasional | Kedokteran                      | S1
   14 | Biologi         | Internasional | Matematika dan Pengetahuan Alam | S1
   15 | Teknik Industri | Internasional | Teknik                          | S1
   16 | Ilmu Komputer   | Internasional | Ilmu Komputer                   | S1
   17 | Kedokteran      | Paralel       | Kedokteran                      | S1
   18 | Biologi         | Paralel       | Matematika dan Pengetahuan Alam | S1
   19 | Teknik Industri | Paralel       | Teknik                          | S1
   20 | Ilmu Komputer   | Paralel       | Ilmu Komputer                   | S1
(20 rows)

sirima=# select * from sirima.program_studi where jenis_kelas = "Reguler";
ERROR:  column "Reguler" does not exist
LINE 1: ...t * from sirima.program_studi where jenis_kelas = "Reguler";

Vao Tsun · Accepted Answer · 2017-05-12 20:11:23Z

48

use single quotes:

select * from sirima.program_studi where jenis_kelas = 'Reguler';

https://www.postgresql.org/docs/current/static/sql-syntax-lexical.html:

edited May 12, 2017 at 20:11

answered May 12, 2017 at 20:09

Vao Tsun

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3 Comments

CodyBugstein Over a year ago

Would it kill them to put that in the error message??

duhaime Over a year ago

Arguably the worst error message I've seen in a decade of programming

mendespedro Over a year ago

@duhaime for sure. spent a few hours trying to debug this.

Clodoaldo Neto · Accepted Answer · 2017-05-12 20:10:25Z

12

Double quotes are for identifiers while single quotes are for strings.

where jenis_kelas = 'Reguler'

answered May 12, 2017 at 20:10

Clodoaldo Neto

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