How can I merge multiple rows with same ID into one row.
I have table:
+----+------+------+------+
| ID | A | B | C |
+----+------+------+------+
| 1 | 123 | 31 | 456 |
| 1 | 412 | NULL | 1 |
| 2 | 567 | 38 | 4 |
| 2 | 567 | NULL | NULL |
| 3 | 2 | NULL | NULL |
| 3 | 5 | NULL | NULL |
| 4 | 6 | 1 | NULL |
| 4 | 8 | NULL | 5 |
| 4 | NULL | NULL | 5 |
+----+------+------+------+
I want to have table :
I have table:
+----+-----+------+------+-----+------+------+------+------+----+
| ID | A | B | C | A2 | B2 | C2 | A3 | B3 | C3 |
+----+-----+------+------+-----+------+------+------+------+----+
| 1 | 123 | 31 | 456 | 412 | NULL | 1 | | | |
| 2 | 567 | 38 | 4 | 567 | NULL | NULL | | | |
| 3 | 2 | NULL | NULL | 5 | NULL | NULL | | | |
| 4 | 6 | 1 | NULL | 8 | NULL | 5 | NULL | NULL | 5 |
+----+-----+------+------+-----+------+------+------+------+----+
Try This:-
1 :- Please Change data table structure to disallow null value.
Query :-
SELECT
GROUP_CONCAT(if (`A` ='0', 'NOVAL', `A`)SEPARATOR '----') as A,
GROUP_CONCAT(if (`B` ='0', 'NOVAL', `B`)SEPARATOR '----') as B,
GROUP_CONCAT(if (`C` ='0', 'NOVAL', `C`)SEPARATOR '----') as C
FROM que1
GROUP BY id
Now You can get the value using mysql_fetch_array
Related
"Table A" & "Table B" are my initial tables for the query. Result is the final table as shown in the following figure.Find Non-existing rows
Table A:
| Date | Name | Count |
|:----------:|:----:|:-----:|
| 01-01-2020 | A | 5 |
| 01-01-2020 | B | 15 |
| 02-01-2020 | B | 20 |
| 02-01-2020 | C | 15 |
| 02-01-2020 | D | 30 |
| 03-01-2020 | A | 30 |
| 03-01-2020 | D | 10 |
Table B:
| Name |
|:----:|
| A |
| B |
| C |
| D |
Result:
| Date | Name | Count |
|:----------:|:----:|:-----:|
| 01-01-2020 | A | 5 |
| 01-01-2020 | B | 15 |
| 01-01-2020 | C | 0 |
| 01-01-2020 | D | 0 |
| 02-01-2020 | A | 0 |
| 02-01-2020 | B | 20 |
| 02-01-2020 | C | 15 |
| 02-01-2020 | D | 30 |
| 03-01-2020 | A | 30 |
| 03-01-2020 | B | 0 |
| 03-01-2020 | C | 0 |
| 03-01-2020 | D | 10 |
cross join distinct dates from a to distinct id from b then left join a
drop table if exists t,t1;
create table t
(id varchar(1),dt date);
create table t1
(id varchar(1));
insert into t values
('a','2019-01-01'),('b','2019-01-01'),
('b','2019-02-01'),('d','2019-01-01'),
('c','2019-03-01');
insert into t1 values
('a'),('b'),('c'),('d');
select t3.id,t3.dt,t.id,t.dt
from
(
select distinct dt,s.id from t
cross join
(select distinct id from t1) s
) t3
left join t on t.id = t3.id and t.dt =t3.dt
order by t3.dt,t3.id;
+------+------------+------+------------+
| id | dt | id | dt |
+------+------------+------+------------+
| a | 2019-01-01 | a | 2019-01-01 |
| b | 2019-01-01 | b | 2019-01-01 |
| c | 2019-01-01 | NULL | NULL |
| d | 2019-01-01 | d | 2019-01-01 |
| a | 2019-02-01 | NULL | NULL |
| b | 2019-02-01 | b | 2019-02-01 |
| c | 2019-02-01 | NULL | NULL |
| d | 2019-02-01 | NULL | NULL |
| a | 2019-03-01 | NULL | NULL |
| b | 2019-03-01 | NULL | NULL |
| c | 2019-03-01 | c | 2019-03-01 |
| d | 2019-03-01 | NULL | NULL |
+------+------------+------+------------+
12 rows in set (0.05 sec)
PS - if you want solutions which are close to your model you should include table definitions and sample data as text in the question (which we can use) rather than links to images (which cannot use)
I have two column with the same name in different tables.
I want to join them into one column in a view.
Here my first table stocks:
+----------+------------+------------+---------+----------------+--------+
| stock_id | stock_cost | stock_left | item_id | purchasedtl_id | trx_id |
+----------+------------+------------+---------+----------------+--------+
| 1 | 1000 | 0 | 1 | 1 | 1 |
| 2 | 1000 | 5 | 1 | 2 | 2 |
| 3 | 1000 | 1 | 1 | 3 | 4 |
+----------+------------+------------+---------+----------------+--------+
Second table stocks_out
+-------------+----------------+--------------+---------+----------+------------+--------+
| stockout_id | stockout_price | stockout_qty | item_id | stock_id | saledtl_id | trx_id |
+-------------+----------------+--------------+---------+----------+------------+--------+
| 1 | 2000 | 1 | 1 | 1 | 1 | 3 |
+-------------+----------------+--------------+---------+----------+------------+--------+
And I want to join them to be like this trx_id, trx_no, trx_closetime, trx_type stock_id, stock_cost, stockout_id, stock_out_cost, stockout_price, item_id
item_id is the field I want to join in one column.
The current Query is :
select `transactions`.`trx_id` AS `trx_id`,`transactions`.`trx_no` AS `trx_no`,`transactions`.`trx_closetime` AS `trx_closetime`,`transactions`.`trx_type` AS `trx_type`,`stocks`.`stock_id` AS `stock_id`,`stocks`.`stock_cost` AS `stock_cost`,`stock_out`.`stockout_id` AS `stockout_id`,`stock_out`.`stockout_price` AS `stockout_price` from ((`transactions` left join `stocks` on(`stocks`.`trx_id` = `transactions`.`trx_id`)) left join `stock_out` on(`stock_out`.`trx_id` = `transactions`.`trx_id`)) order by `transactions`.`trx_closetime`;
And the current result:
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+
| trx_id | trx_no | trx_closetime | trx_type | stock_id | stock_cost | stockout_id | stockout_price |
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+
| 1 | 02002-02-170415-001 | 2017-04-15 19:40:03 | 2 | 1 | 1000 | NULL | NULL |
| 2 | 02002-02-170415-002 | 2017-04-15 19:40:13 | 2 | 2 | 1000 | NULL | NULL |
| 3 | 02002-01-170415-001 | 2017-04-15 19:40:57 | 1 | NULL | NULL | 1 | 2000 |
| 4 | 02002-02-170415-003 | 2017-04-15 19:41:14 | 2 | 3 | 1000 | NULL | NULL |
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+
Found it guys.
I just need to add the following query as the column
COALESCE(`stocks`.`item_id`, `stocks_out`.`item_id`) AS `item_id`
So the query will be like
select `transactions`.`trx_id` AS `trx_id`,`transactions`.`trx_no` AS `trx_no`,`transactions`.`trx_closetime` AS `trx_closetime`,`transactions`.`trx_type` AS `trx_type`,`stocks`.`stock_id` AS `stock_id`,`stocks`.`stock_cost` AS `stock_cost`,`stock_out`.`stockout_id` AS `stockout_id`,`stock_out`.`stockout_price` AS `stockout_price`, COALESCE(`stocks`.`item_id`, `stocks_out`.`item_id`) AS `item_id from ((`transactions` left join `stocks` on(`stocks`.`trx_id` = `transactions`.`trx_id`)) left join `stock_out` on(`stock_out`.`trx_id` = `transactions`.`trx_id`)) order by `transactions`.`trx_closetime`;
And the result:
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+---------+
| trx_id | trx_no | trx_closetime | trx_type | stock_id | stock_cost | stockout_id | stockout_price | item_id |
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+---------+
| 1 | 02002-02-170415-001 | 2017-04-15 19:40:03 | 2 | 1 | 1000 | NULL | NULL | 1 |
| 2 | 02002-02-170415-002 | 2017-04-15 19:40:13 | 2 | 2 | 1000 | NULL | NULL | 1 |
| 3 | 02002-01-170415-001 | 2017-04-15 19:40:57 | 1 | NULL | NULL | 1 | 2000 | 1 |
| 4 | 02002-02-170415-003 | 2017-04-15 19:41:14 | 2 | 3 | 1000 | NULL | NULL | 1 |
+--------+---------------------+---------------------+----------+----------+------------+-------------+----------------+---------+
I have these two tables
facilities
+----+--------------------------------------+--------------+-------+------+------------+------------+
| id | name | category | image | cust | created_at | updated_at |
+----+--------------------------------------+--------------+-------+------+------------+------------+
| 1 | Bar | hotel | | | NULL | NULL |
| 2 | Minibar in alle Zimmer | hotel | | | NULL | NULL |
| 3 | Snack restaurant | hotel | | | NULL | NULL |
| 4 | Grillroom | hotel | | | NULL | NULL |
+----+--------------------------------------+--------------+-------+------+------------+------------+
table - 2
resortfacilities
+----+------+---------------------+---------------------+------+
| id | f_id | created_at | updated_at | h_id |
+----+------+---------------------+---------------------+------+
| 42 | 4 | 2016-09-21 13:17:27 | 2016-09-21 13:17:27 | 35 |
| 59 | 1 | 2016-09-22 10:23:27 | 2016-09-22 10:23:27 | 38 |
| 60 | 4 | NULL | NULL | 38 |
+----+------+---------------------+---------------------+------+
And I have ran this following sql
SELECT
facilities.id,
facilities.`name`,
facilities.image,
resortfacilities.h_id
FROM
facilities
LEFT JOIN resortfacilities ON facilities.id = resortfacilities.f_id
WHERE
resortfacilities.f_id IS NULL AND
facilities.category = 'hotel' OR
resortfacilities.h_id <> 35
with the expectation of get getting the following result
+----+---------------------------+-------+------+
| id | name | image | h_id |
+----+---------------------------+-------+------+
| 4 | Grillroom | | 38 |
| 2 | Minibar in alle Zimmer | | NULL |
| 3 | Snack restaurant | | NULL |
+----+---------------------------+-------+------+
with out the values that belongs to h_id 35 but I end up with
+----+---------------------------+-------+------+
| id | name | image | h_id |
+----+---------------------------+-------+------+
| 1 | Bar | | 38 |
| 4 | Grillroom | | 38 |
| 2 | Minibar in alle Zimmer | | NULL |
| 3 | Snack restaurant | | NULL |
+----+---------------------------+-------+------+
May I know how to get the that result?
use the below script (for getting the result as mentioned ).
SELECT
f.id,
f.`name`,
f.image,
r.h_id
FROM
facilities f
LEFT JOIN resortfacilities r ON f.id = f.f_id AND r.h_id <> 35
WHERE f.category = 'hotel'
I have this table, its name is puntajes:
+---------------+---------------+---------+
| estudiante_ID | evaluacion_ID | puntaje |
+---------------+---------------+---------+
| 1 | 1 | 15 |
| 2 | 1 | 11 |
| 3 | 1 | 17 |
| 4 | 1 | 12 |
| 1 | 2 | 13 |
| 2 | 2 | 8 |
| 3 | 2 | 15 |
| 4 | 2 | 16 |
| 1 | 3 | 9 |
| 2 | 3 | 14 |
| 3 | 3 | 9 |
| 4 | 3 | 10 |
| 1 | 4 | 15 |
| 2 | 4 | 16 |
| 3 | 4 | 9 |
| 4 | 4 | 12 |
+---------------+---------------+---------+
And I want to get the max score from puntaje column where evaluacion_ID is equal to 3, i want this value to be in the 'maxpuntaje 'column in the evaluaciones table, like an update , this is evaluaciones table:
+---------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------------+------------------+------+-----+---------+----------------+
| fecha | date | NO | | NULL | |
| tipo | enum('P','E') | NO | | NULL | |
| maxpuntaje | int(11) | NO | | NULL | |
| clase_ID | int(10) unsigned | NO | | NULL | |
| evaluacion_ID | int(10) unsigned | NO | PRI | NULL | auto_increment |
+---------------+------------------+------+-----+---------+----------------+
both of the tables have the evaluacion_ID column
I've commented out WHERE conditions that limit the UPDATE and maximum puntaje value retrieval so that your query could be run for all evaluacion_ID. If you need it only for 3, remove the comment marks.
Using MySQL UPDATE JOIN syntax:
UPDATE evaluaciones e
LEFT JOIN (
SELECT evaluacion_ID, MAX(puntaje) maxpuntaje
FROM puntajes
-- WHERE evaluacion_ID = 3
GROUP BY evaluacion_ID
) p USING (evaluacion_ID)
SET maxpuntaje = p.maxpuntaje
-- WHERE e.evaluacion_ID = 3
I suspect you're looking for this query:
UPDATE evaluaciones
SET maxpuntaje = (
SELECT max(puntaje)
FROM puntajes
WHERE evaluacion_ID = evaluaciones.evaluacion_ID
)
WHERE evaluacion_ID = 3
Say I have 3 tables, foo bar and baz, where bar and baz having different additional informations about the datasets in foo. Is there a way to join these 3 tables together, so that in every output row is either a (foo <join> bar) or (foo <join> baz) dataset?
Say, I have the following tables:
mysql> select * from foo;
+----+-------+
| id | foo |
+----+-------+
| 1 | start |
| 2 | mid |
| 3 | end |
+----+-------+
mysql> select * from bar;
+----+-----+-----------+
| id | bid | bar |
+----+-----+-----------+
| 1 | 1 | bar-start |
| 2 | 2 | bar-mid |
| 3 | 3 | bar-end |
+----+-----+-----------+
mysql> select * from baz;
+----+-----+-------------+
| id | bid | baz |
+----+-----+-------------+
| 1 | 1 | baz-start-1 |
| 1 | 2 | baz-start-2 |
| 1 | 3 | baz-start-3 |
| 2 | 4 | baz-mid-1 |
| 2 | 5 | baz-mid-2 |
| 2 | 6 | baz-mid-3 |
| 3 | 7 | baz-end-1 |
| 3 | 8 | baz-end-2 |
| 3 | 9 | baz-end-3 |
+----+-----+-------------+
I can extract all the information with a query which joins those tables together via
mysql> select * from foo join bar join baz on foo.id = bar.id and foo.id=baz.id;
+----+-------+----+-----+-----------+----+-----+-------------+
| id | foo | id | bid | bar | id | bid | baz |
+----+-------+----+-----+-----------+----+-----+-------------+
| 1 | start | 1 | 1 | bar-start | 1 | 1 | baz-start-1 |
| 1 | start | 1 | 1 | bar-start | 1 | 2 | baz-start-2 |
| 1 | start | 1 | 1 | bar-start | 1 | 3 | baz-start-3 |
| 2 | mid | 2 | 2 | bar-mid | 2 | 4 | baz-mid-1 |
| 2 | mid | 2 | 2 | bar-mid | 2 | 5 | baz-mid-2 |
| 2 | mid | 2 | 2 | bar-mid | 2 | 6 | baz-mid-3 |
| 3 | end | 3 | 3 | bar-end | 3 | 7 | baz-end-1 |
| 3 | end | 3 | 3 | bar-end | 3 | 8 | baz-end-2 |
| 3 | end | 3 | 3 | bar-end | 3 | 9 | baz-end-3 |
+----+-------+----+-----+-----------+----+-----+-------------+
But I would like to get an output like the following table, since that would make the code in the application consuming the data much simpler:
+----+-------+------+------+-----------+------+------+-------------+
| id | foo | id | bid | bar | id | bid | baz |
+----+-------+------+------+-----------+------+------+-------------+
| 1 | start | 1 | 1 | bar-start | NULL | NULL | NULL |
| 1 | start | NULL | NULL | | 1 | 1 | baz-start-1 |
| 1 | start | NULL | NULL | | 1 | 2 | baz-start-2 |
| 1 | start | NULL | NULL | | 1 | 3 | baz-start-3 |
| 2 | mid | 2 | 2 | bar-mid | NULL | NULL | NULL |
| 2 | mid | NULL | NULL | | 2 | 4 | baz-mid-1 |
| 2 | mid | NULL | NULL | | 2 | 5 | baz-mid-2 |
| 2 | mid | NULL | NULL | | 2 | 6 | baz-mid-3 |
| 3 | end | 3 | 3 | bar-end | NULL | NULL | NULL |
| 3 | end | NULL | NULL | | 3 | 7 | baz-end-1 |
| 3 | end | NULL | NULL | | 3 | 8 | baz-end-2 |
| 3 | end | NULL | NULL | | 3 | 9 | baz-end-3 |
+----+-------+------+------+-----------+------+------+-------------+
Is there a way to convince mysql to give me a result set like the last one?
(
select foo.id as foo_id, foo.foo, bar.id, bar.bid, bar.bar, null, null as baz_bid, null as baz from foo
join bar on foo.id=bar.id
)
union
(
select foo.id as foo_id, foo.foo, null, null, '', baz.id, baz.bid as baz_bid, baz.baz from foo
join baz on foo.id=baz.id
)
order by foo_id asc, bar desc, baz_bid asc