Here is the JOIN:
SELECT
gc3025_raid_results.raid_id,
gc3025_game_units.planet_id,
gc3025_game_units.g_dist,
gc3025_game_units.unit_name,
gc3025_units_base.unit_type,
gc3025_game_units.code,
gc3025_game_units.cdamage,
gc3025_units_base.defense_raid_score,
gc3025_units_base.raid_damage
FROM gc3025_game_units
JOIN gc3025_units_base
ON gc3025_game_units.code = gc3025_units_base.unit_code
JOIN gc3025_raid_results
ON gc3025_raid_results.district_idg = gc3025_game_units.g_dist
I then need to insert into another table
INSERT INTO gc3025_raid_defenders(
raid_ids, planet_id, district_id,
unit_name, unit_type, unit_code,
raid_score, raid_damage)
SELECT ... (see above) ...
Any suggestions would be appreciated.
This should get you going, but you will need to add the other fields. Make sure the name and order of the fields in the insert() match the fields in the select()
insert into gc3025_raid_defenders (raid_ids, planet_id, etc...)
select (gc3025_raid_results.raid_id, gc3025_game_units.planet_id, etc...)
from gc3025_game_units gu
join gc3025_units_base ub
on gu.code = ub.unit_code
join gc3025_raid_results rr
on gu.g_dist = rr. district_idg
On a side note, think about naming your fields like g_dist consistently between tables, if possible.
Related
$sql = 'SELECT *
FROM table_all ta
INNER JOIN table11 ta11
ON ta11.column1 = ta.column1
INNER JOIN table12 ta12
ON ta12.column2 = ta.column2
INNER JOIN table13 ta13
ON ta13.column3 = ta.column3';
This is a sql statement of a PHP-programm that I am currently working on. It works fine actually, but I am unsatisfied with the outcome of this statement. It would be nice to have
only the content of the table_all and then
only the three columns of those other three tables (table11, table12, table13).
The asterisk creates some problems in this regard.
The length of table_all is not known. It is able to change in size.
I tried Union and multiple selects, but only received errors. How would one deal with such a problem?
You can try specifying which columns do you want to get.
As you can see asterisk returns all columns.
You should use something like:
$sql = 'SELECT ta11.column1, taa12.column2, ta13.column13
FROM table_all ta
INNER JOIN table11 ta11
ON ta11.column1 = ta.column1
INNER JOIN table12 ta12
ON ta12.column2 = ta.column2
INNER JOIN table13 ta13
ON ta13.column3 = ta.column3';
I don't see a point in getting ta11.column1, taa12.column2, ta13.column13 because these fields are already in table_all (you use these columns in Join). But you can select any columns you want that way.
I keep falling back into questions with MySQL joining.
And I would like to request a very simple example I could use to continue my journey of understanding learning the MySQL syntax.
Let's say I got the following table's
test_testtable
testtable_id
testtable_name
testtable_user
testtable_option
testtable_textfield
test_testlink
testlink_id
testlink_link
testlink_address
test_address
address_id
address_name
address_phone
address_email
address_street
address_city
address_zip
I would like to make a selection like :
SELECT * (lets say I would define the fields) FROM `test_testable`
JOIN `test_testtable`.`testtable_id` = `test_testlink`.`testlink_link`
AND
JOIN `test_testlink`.`testlink_addres` = `test_address`.`address_id`
WHERE `user_id` = 5
Hence the linking structure is like:
test_testtable.testtable_id = leading
table test_testlink is a table to link the table test_testtable and test_address
And linking table test_testlink uses the field testlink_link to link to the table test_testtable, and uses the field testlink_address to link to the table test_address
This does not work. FOR ME.. Since I continuously seem to fail of catching the correct syntax logic.
So I hope that someone could give me a small example of how to correctly implement such a simple yet critical query!
TIAD!!
A general approach :
SELECT table1.* FROM table1
JOIN table2 ON table2.id_table1 = table1.id
JOIN table3 ON table3.id_table2 = table2.id
WHERE table1.id = 10
For your purpose :
SELECT * (lets say I would define the fields) FROM `test_testable`
JOIN `test_testlink` ON `test_testtable`.`testtable_id` = `test_testlink`.`testlink_link`
JOIN `test_address` ON `test_testlink`.`testlink_addres` = `test_address`.`address_id`
WHERE `user_id` = 5
Please read the reference
You are using wrong syntax. You should mention which tables to join first then based on which fields.
SELECT * (lets say I would define the fields) FROM `test_testable`
INNER JOIN test_testlink
ON `test_testtable`.`testtable_id` = `test_testlink`.`testlink_link`
INNER JOIN `test_address`
ON `test_testlink`.`testlink_addres` = `test_address`.`address_id`
AND `test_testtable`.`user_id` = 5
select * from testlink JOIN testtable ON testlink.tableid = testtable.ID
JOIN testaddress ON testlink.addressid = testaddress.ID
WHERE testtable.ID = 5
I'm having a struggle here trying to grab some data from 3 database tables..
The idea is that users can fill out their profile with several fields, and I'm storing every profile field, field values and the users selected value in separate tables.
The structure of the tables look like this:
Table 'profile_fields'
- id
- name
- sort
- status (enum '0', '1')
Table 'profile_field_values'
- id
- profile_field_id
- name
Table 'user_profile_fields'
- user_id
- profile_field_id
- profile_field_value_id
Would be really nice if you could tell me how to construct this query, and why you used the JOIN you did.
Also, how would this table layout scale when the userbase grows?
Thank you so much in advance!
Edit:
OK, I still can't figure out how to make it return all the fields from 'profile_fields' along with the users selected option from 'user_profile_fields'. If the user hasn't selected a value, it should just be null.
This is my (non-functional) query so far:
SELECT PF.id AS field_id, PF.name AS field_name, UPF.profile_field_value_id AS value_id, PF.type, PFV.name
FROM profile_fields PF
LEFT JOIN profile_fields_values PFV ON PFV.profile_field_id = PF.id
LEFT JOIN user_profile_fields UPF ON UPF.user_id=1 AND PF.id = UPF.profile_field_id
WHERE length(PF.name) > 0 and PF.status = '1'
ORDER BY PF.sort
This query seems to work, but it does not fetch the name of the value from 'profile_field_values':
SELECT PF.id AS field_id, PF.name AS field_name, UPF.profile_field_value_id AS value_id, PF.type
FROM profile_fields PF
LEFT JOIN user_profile_fields UPF ON UPF.user_id =1
AND PF.id = UPF.profile_field_id
WHERE LENGTH( PF.name ) >0
AND PF.status = '1'
ORDER BY PF.sort
I think you have some unnecessary complexity in there. Maybe you should try
Table 'profile_fields'
id
name
sort
status (enum '0', '1')
Table 'profile_field_values'
id
user_id
profile_field_id
value
why are there 3 tables?
Seems like simple JOINs should work:
SELECT pf.id, pf.name, pf.sort, pf.status,
pfv.id, pfv.profile_field_id, pfv.name,
upf.user_id, upf.profile_field_id, upf.profile_field_value_id
FROM profile_fields pf
INNER JOIN profile_field_values pfv
ON pf.id = pfv.profile_field_id
INNER JOIN user_profile_fields upf
ON upf.profile_field_value_id = pfv.id AND upf.profile_field_id = pf.id
A Visual Explanation of SQL Joins
This uses an INNER JOIN to select all matching records from each table -- review the post to tell the difference between an INNER and an OUTER join.
I have two tables and joined them to one different table
1 table named 'rec_dept'
id_dept
id_divisi
nama_dept
2 table named 'rec_divisi'
id_divisi
nama_div
3 joined table named 'rec_divdep'
id_divdep
id_divisi
id_dept
How to get nama_dept where in the same id_divisi?
Maybe you're looking for this:
SELECT `nama_dept` FROM `rec_dept` WHERE `id_divisi` IN (SELECT `id_divisi` FROM `rec_divdep`);
Hope that helps
you can do a SELECT query with a LEFT JOIN function to get data
SELECT a.`nama_dept` FROM `rec_dept` a
LEFT JOIN `rec_divisi` b
ON a.`id_divisi` = b.`id_divisi`
ORDER BY a.`id_divisi` ASC
SELECT documentation
LEFT JOIN documentation
select a.id_dept, a.id_divisi, a.nama_dept, b.id_divisi, b.nama_div, c.id_divdep, c.id_divisi from rec_divdep as c left join rec_divisi as b on (c.id_divisi = b.id_divisi) left join rec_dept as a on (c.id_divisi = a.id_divisi)
what database do you use. I code mine as mysql, basically I condition the three tables that has same id_divisi. I did not test it but I am pretty sure of the logic based on what I understand.
I've been working on a project that until now has only needed to find 1 row from the joined table. But now I need to grab multiple rows..
So as it stand my sql works something like:
Select rows for each company for this particular project which alone would find company details (name, id, telephone.. blah).
Then I join a table that contains form data submitted for each company (multiple forms - so multiple records)
Until now i have been specifying one formid to look for in the join, but now i need to specify multiple ones.
If I use WHERE form_id = 1 OR form_id = 2 OR form_id = 3 ... I get a result of only the first form match that is found per company..
If I mix up the query so it looks for the forms 1st and returns multiple records for each company with different form data - that works in this sense..
But I am then looping through this array in a view and creating a table row per record (previously each row was a new company) but using the latter would cause multiple records to show for the same company.
Any way I can do this? I tried group by with the latter method but this results in only 1 record again.
SELECT DISTINCT p.project_company_has_user_id, p.project_company_has_user_project_id, p.project_company_has_user_user_id, c.company_id, c.company_hall_no, c.company_company_name, c.company_type, c.company_country, c.company_stand_number, c.company_image_file_1, p2.project_id, p2.project_name, u.user_id, u.user_username, o.orders_id, o2.order_detail_id, o2.order_detail_product_id, f2.form_question_has_answer_id, f2.form_question_has_answer_request, f2.form_question_has_answer_form_id, f2.form_question_has_answer_user_id
FROM project_company_has_user p
INNER JOIN company c ON p.project_company_has_user_company_id = c.company_id
INNER JOIN project p2 ON p.project_company_has_user_project_id = p2.project_id
INNER JOIN user u ON p.project_company_has_user_user_id = u.user_id
INNER JOIN form f ON p.project_company_has_user_project_id = f.form_project_id
LEFT JOIN orders o ON p.project_company_has_user_user_id = o.orders_user_id
LEFT JOIN order_detail o2 ON ((o2.order_detail_orders_id = o.orders_id AND (o2.order_detail_product_id = 65 OR o2.order_detail_product_id = 68 OR o2.order_detail_product_id = 64)))
LEFT JOIN form_question_has_answer f2 ON ((f2.form_question_has_answer_form_id = 297 AND f2.form_question_has_answer_user_id = p.project_company_has_user_user_id))
WHERE (f.form_template_name = "custom" AND p.project_company_has_user_garbage_collection = 0 AND p.project_company_has_user_project_id = 48) AND (LCASE(c.company_country) LIKE "%uk%" OR LCASE(c.company_country) LIKE "%uk%") ORDER BY company_company_name asc
you need another field in order_detail as o2 . this field is row_index(position),etc for positioning record
LEFT JOIN order_detail o2 ON (o2.row_index=1 AND (o2.order_detail_orders_id = o.orders_id AND (o2.order_detail_product_id = 65 OR o2.order_detail_product_id = 68 OR o2.order_detail_product_id = 64)))
Personally I would use an Outer Join for the table of which elements you need to list all matches. Should you them need to clean up that data you can build the logic into the Join Condition (as step 2). Depending on the volume of data you are handling and whether or not you need to reuse it later in the same proc, you may want to post that primary dataset into a temp table and use that as source (primary) for your later logic.
Hope that helps. If you need the code, let me know, but it is pretty straight forward.
Regards
Mac