DISTINCT clause with WHERE
If you mean all columns whose email is unique: SELECT * FROM table WHERE email in (SELECT email FROM table GROUP BY email HAVING COUNT(email)=1);
where-clause
SQL JOIN where to place the WHERE condition?
If a filter enters in a JOIN condition functionally (i.e. it is an actual join condition, not just a filter), it must appear in the ON clause of that join. Worth noting: If you place it in the WHERE clause instead, the performances are the same if the join is INNER, otherwise it differs. As … Read more
SQL Not Like Statement not working
If WPP.COMMENT contains NULL, the condition will not match. This query: SELECT 1 WHERE NULL NOT LIKE ‘%test%’ will return nothing. On a NULL column, both LIKE and NOT LIKE against any search string will return NULL. Could you please post relevant values of a row which in your opinion should be returned but it … Read more
why would you use WHERE 1=0 statement in SQL?
A query like this can be used to ping the database. The clause: WHERE 1=0 Ensures that non data is sent back, so no CPU charge, no Network traffic or other resource consumption. A query like that can test for: server availability CUST_ATTR49 table existence ID column existence Keeping a connection alive Cause a trigger … Read more
Can I use ‘where’ inside a for-loop in swift?
In Swift 2, new where syntax was added: for value in boolArray where value == true { … } In Pre 2.0 one solution would be to call .filter on the array before you iterate it: for value in boolArray.filter({ $0 == true }) { doSomething() }
WHERE clause before INNER JOIN
The where clause will be executed before the join so that it doesn’t join unnecessary records. So your code is fine the way it is.
How can I have IS NULL condition in TypeORM find options?
If someone is looking for NOT NULL, it would be like this: import { IsNull, Not } from “typeorm”; return await getRepository(User).findOne({ where: { username: Not(IsNull()) } });
How to use numpy.where with logical operators
Here are two ways: In [1]: my_array = arange(10) In [2]: where((my_array > 3) & (my_array < 7)) Out[2]: (array([4, 5, 6]),) In [3]: where(logical_and(my_array > 3, my_array < 7)) Out[3]: (array([4, 5, 6]),) For the first (replacing and with &), be careful to add parentheses appropriately: & has higher precedence than the comparison operators. … Read more
Oracle date “Between” Query
Judging from your output it looks like you have defined START_DATE as a timestamp. If it were a regular date Oracle would be able to handle the implicit conversion. But as it isn’t you need to explicitly cast those strings to be dates. SQL> alter session set nls_date_format=”dd-mon-yyyy hh24:mi:ss” 2 / Session altered. SQL> SQL> … Read more
MySql Inner Join with WHERE clause [closed]
Yes you are right. You have placed WHERE clause wrong. You can only use one WHERE clause in single query so try AND for multiple conditions like this: SELECT table1.f_id FROM table1 INNER JOIN table2 ON table2.f_id = table1.f_id WHERE table2.f_type=”InProcess” AND f_com_id = ‘430’ AND f_status=”Submitted”