How does select query works – Mysql
I need to return value in preference order, if the value starts with a it should be returned first, if it does not exist we return the value which starts with b. SELECT value FROM table one WHERE value LIKE…
What (*) hides behind itself in this code – Postgresql
I don't get why when I SELECT pizzeria_name and person_name in FROM nested query it doesn't work but when I put (*) instead i see two columns displayed on the screen with names person_name and pizzeria_name. How can i substitute…
How to insert date in a new table in YYYY-MM-DD' format? – Mysql
CREATE TABLE ORDERS ( ORD_NUM NUMERIC(6,0) NOT NULL PRIMARY KEY, ORD_AMOUNT NUMERIC(12,2) NOT NULL, ORD_DATE DATE NOT NULL, INSERT INTO ORDERS VALUES('200100', '1000.00', '08/01/2008'); INSERT INTO ORDERS VALUES('200110', '3000.00', '04/15/2008'); INSERT INTO ORDERS VALUES('200107', '4500.00', '08/30/2008'); Since I have large…
Avoiding double counting values when aggregating tables used in joins – Postgresql
I have two tables that have a parent/child relationship, where one record in the parent table may correspond to N records in the child. Both tables have an amount column that I want to aggregate in one query, so I…
MySQL NOT IN subquery removing more lines that contained in the subquery
I'm having results I don't understand from a MySQL query that should be pretty simple. The goal I want to achieve is more complex, but I have reduced the problem to this: When I am using NOT IN subquery in…
Joining 3 tables referencing table 1 and combining values with comma delimiter in MYSQL
I'm having trouble on joining three tables. First attempt on joining two tables is success, but on third table the results are not correct... I have three tables machine_list is mainTable then applicable_rpm and applicable_product are some details of machine_list…
Is there a way to collapse ordered rows by terminal values with postgres window clause – Postgresql
I have a table foo: some_fk some_field some_date_field 1 A 1990-01-01 1 B 1990-01-02 1 C 1990-03-01 1 X 1990-04-01 2 B 1990-01-01 2 B 1990-01-05 2 Z 1991-04-11 2 C 1992-01-01 2 B 1992-02-01 2 Y 1992-03-01 3 C…
If Concat insert result – Mysql
I have a problem, I am making an insert using the concat to generate multiple inserts, however I realize that a null field is affecting all the queries, since the records that have null in their field, their insert is…
MySQL – Query to return repetitive values associated with multi table
I have two tables Name & Zip, and i want a query to return the zip codes which are having more than 2 plans associated with one different name +------+------+ +------+------+ | TABLE: NAME | | TABLE: ZIP | +------+------+…
SQL display query results with specified columns appearing on the leftmost side of the table – Jquery
I need to display SQL query results by having specified columns appear first (on the leftmost side of the table). The currrent code I have is: Select * from table order by column 4, column 3, column 1 Result: column…