I am reading an SQL query in Redshift and can’t understand the last part: … LEFT JOIN (SELECT MIN(modified) AS first_modified FROM user) ue ON 1=1 What does ON 1=1 mean here?
The specified schema name either does not exist or you do not have permission to use it
I am trying to create replica of my database from SQL server to another. For that I am generating script from original server and trying to run in another server. I’ve created database manually with …
How to select rows with uniq value of column and to calculate count?
I have table like this for example: I need to select each uniq column by ver and to calculate how much is total of rows by each uniq ver column I think each total to add into the new column …
Using EXCEPT clause in PostgreSQL
I am trying to use the EXCEPT clause to retrieve data from table. I want to get all the rows from table1 except the one’s that exist in table2. As far I understand, the following would not work: The only way I can use EXCEPT seems to be to select from the same tables or select columns that have the
How to find all connected subgraphs of an undirected graph
I need some help for a problem that i am struggling to solve. Example table: ID |Identifier1 | Identifier2 ——————————— 1 | a | c 2 | b | f …
Pivot Queries – trouble with SUM()
I have the following query: select extract(year from p.when_paid) yyyy, MONTHNAME(STR_TO_DATE(extract(month from p.when_paid), ‘%m’)) mm, f.name, IF(p.payment_type_id = 1,SUM(p.amount),null) MedPay, …
MySQL get the nearest future date to given date, from the dates located in different table having Common ID
I have two tables – Client and Banquet Client Table —————————- ID NAME 1 John 2 Jigar 3 Jiten —————————- Banquet Table ————————-…
Convert Hibernate @Formula (case ) to JOOQ field
I am rewriting entire DB access layer from Hibernate to JOOQ and I face following issue. One of JPA models is annotated with @Formula annotation as follows: I saw the following question : Convert Hibernate @Formula to JOOQ field but it did not really help How can above query be translated to JOOQ DSL? Answer The jOOQ manual’s section about
How to display query results in php
I know how to make a set query display, but I need to take an input, run a statement, and display the result. Here is what I have: HTML: PHP: I also want to make the statements read only so nobody can mess with my tables. im a little new to this i might need some extra explaining Answer To
How to handle True, False or NULL in where clause
How can I reduce this to only one where statement @state as bit I wish I could compare True, False or NULL in one select statement Answer Would this not work? Another approach would be to use coalesce on both conditions.