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Replace NULL values per partition

I want to fill NULL values in device column for each session_id with an associated non-NULL value. How can I achieve that? Here is the sample data: +————+——-+———+ | session_id | step …

NULL behavior with Comoperator like ALL in Oracle SQL

SELECT * FROM hr.NullValueCheck ID Name 1 abc 2 abc 3 bcd 4 cde https://oracle-base.com/articles/misc/all-any-some-comparison-conditions-in-sql Query 1 : SELECT * FROM hr….

Query null values

I have the column deletedTime in my instances table. Now I want to check in ColdFusion if the value is null. There is only one record to be printed out with the query. IsNull(test) is returning the …

How to ‘create’ NULL data in Teradata SQL for non existing relations

I have 2 tables, one lists features with a feature value that an account might or might not have (TBL_Feat), the other lists the accounts (TBL_Acct). I’m looking for a query to give me all features …

Adding three Integer variable shows result as Null, why?

Here is the code I tried SELECT case when InsertedRows is null then 0 else InsertedRows end InsertedRows ,case when FailedRows is null then 0 else FailedRows end FailedRows ,case when UpdatedRows …

Left join not returning null records

I’am dealing with a pretty basic SQL query, but I cannot understand why the non matching records are not represented with the null values in right table. I have table A and table B with a composite …

mySQL select query does not return results when using a WHERE clause against a NULL column.

I have a single column in a table which looks like this: (field3 is NULL. I use QTODBC7.0 to perform SQL queries, and this application makes NULL fields appear blank in the query results, rather than …

SQL using If Not Null on a Concatenation

If I have the table SELECT (Firstname || ‘-‘ || Middlename || ‘-‘ || Surname) AS example_column FROM example_table This will display Firstname-Middlename-Surname e.g. John–Smith Jane-Anne-Smith …

null value in column “last_login” violates not-null constraint

Having issues getting rid of this error. I’m trying to use Digital Ocean to deploy my Django app. I configured Postgres, but when I’m trying to register a new user in my app, I get this problem. I’…

Avoid division by zero in PostgreSQL

I’d like to perform division in a SELECT clause. When I join some tables and use aggregate function I often have either null or zero values as the dividers. As for now I only come up with this method …