I have 3 tables that are 1:1 and will always have a row for a given
product,_code date. If I want to join them together, is it going to be
faster to use an equi join or a left join, or does it matter?
Who cares, they are -different- things symantically, use the correct type of
join for
Hello all,
I'm trying to design a relational database where two tables link to each other
through unique id sa below
Table 1
table1_id INT UNSIGNED NOT NULL AUTO INCREMENT,
entrydate TIMESTAMP
Table2
table2_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
table1_id INT UNSIGNED NOT NULL,
I am trying to select names from a list which depends on another table
for their ranking.
I want to retrieve all names that start with a Capital letter in
last_name and ranking of 1 and any other names that have a ranking of 2
but are both related to a third table.
tables: book(id,...etc.),
Hi Devs
I have a tricky question and I want to know if its possible to accomplish it
on mysql and how.
The following query:
SELECT
fields.id AS field_id,
data.user_id,
fields.type,
fields.name,
data.value,
entries.ip,
entries.date,
entries.user_agent
FROM
I think I acompplish it!
Merge that query into a view called report_1 and then:
(1) SELECT user_id, MAX(IF(name='RUT',value,NULL)) AS 'Rut',
MAX(IF(name='Name',value,NULL)) AS 'Name' FROM report_1 GROUP BY user_id;
+-+---++
| user_id | Rut | Name |
