Reputation: 12656
Consider the following sqlite3 table:
+------+------+
| col1 | col2 |
+------+------+
| 1 | 200 |
| 1 | 200 |
| 1 | 100 |
| 1 | 200 |
| 2 | 400 |
| 2 | 200 |
| 2 | 100 |
| 3 | 200 |
| 3 | 200 |
| 3 | 100 |
+------+------+
I'm trying to write a query that will select the entire table and return 1 if the value in col2
is 200, and 0 otherwise. For example:
+------+--------------------+
| col1 | SOMEFUNCTION(col2) |
+------+--------------------+
| 1 | 1 |
| 1 | 1 |
| 1 | 0 |
| 1 | 1 |
| 2 | 0 |
| 2 | 1 |
| 2 | 0 |
| 3 | 1 |
| 3 | 1 |
| 3 | 0 |
+------+--------------------+
What is SOMEFUNCTION()?
Thanks in advance...
Upvotes: 1
Views: 639
Reputation: 180080
In SQLite, boolean values are just integer values 0 and 1, so you can use the comparison directly:
SELECT col1, col2 = 200 AS SomeFunction FROM MyTable
Upvotes: 2
Reputation: 9723
Like described in Does sqlite support any kind of IF(condition) statement in a select you can use the case keyword.
SELECT col1,CASE WHEN col2=200 THEN 1 ELSE 0 END AS col2 FROM table1
Upvotes: 1