I'm working on a pagination code that uses SQL_CALC_FOUND_ROWS() but when I limit the results per page to a number less than the total results, "SELECT FOUND_ROWS() as total" will return the number of elements per page and not the total of found rows. Since I'm doing a select from the second select, this result makes total sense but I don't know how to solve this. How can I pass the total results from inside to the external select?
My code(please, ignore quotation marks for php escaping):
SELECT SQL_CALC_FOUND_ROWS userid,contaTipo,userNome,nomeFantasia,sexo,cidade,estado,bairro,imovelN,logradouro,avaliacao,imagem,formasPagamento,estabelecimento,profissao
FROM
(SELECT vw_Busca.userid as userid, vw_Busca.contaTipo as contaTipo, vw_Busca.userNome as userNome,
vw_Busca.nomeFantasia as nomeFantasia,vw_Busca.sexo as sexo, vw_Busca.cidade as cidade, vw_Busca.estado as estado, vw_Busca.bairro as bairro,
vw_Busca.imovelN as imovelN,vw_Busca.logradouro as logradouro,tipoProfissionalPF.tipo as profissao, tipoProfissionalPJ.tipo as estabelecimento,
vw_userRating.total as avaliacao, GROUP_CONCAT(especialidades.especialidade SEPARATOR ', ') as especs,
vw_Busca.imagem as imagem, GROUP_CONCAT( DISTINCT userPagamento.formaPagamento SEPARATOR ', ') as formasPagamento
FROM vw_Busca
LEFT JOIN usersEspec ON usersEspec.userid=vw_Busca.userid
LEFT JOIN especialidades ON especialidades.id=usersEspec.especialidade
LEFT JOIN userPagamento ON userPagamento.userid=vw_Busca.userid
LEFT JOIN profissionais ON profissionais.userid=vw_Busca.userid
LEFT JOIN tipoProfissionalPF ON tipoProfissionalPF.id=profissionais.profissao
LEFT JOIN empresaDados ON empresaDados.userid=vw_Busca.userid
LEFT JOIN tipoProfissionalPJ ON tipoProfissionalPJ.id=empresaDados.tipoProfissionalPJ
LEFT JOIN vw_userRating ON vw_userRating.userid=vw_Busca.userid
WHERE vw_Busca.cidadeId='$cidade' AND (vw_Busca.userNome LIKE '%".$termo."%' OR
vw_Busca.nomeFantasia LIKE '%".$termo."%'
OR vw_Busca.tags LIKE '%".$termo."%')
GROUP BY userid LIMIT $inicio,$qtd) as mainTable
ORDER BY mainTable.avaliacao DESC
It appears that your outer select is just ordering results returned from the inner query. Since your inner query has already applied a LIMIT, your outer query is actually performing sort on partial results, which seems incorrect to me. So I guess you can remove the outer select altogether which would solve your problem.
By the way, just noticed that the SQL_CALC_FOUND_ROWS query modifier and accompanying FOUND_ROWS() function are deprecated as of MySQL 8.0.17 as per the documentation
Related
Is it possible to use two "select" in the same query?
I tried it but got the syntax error several times.
My query example:
SELECT
comp.id,
comp.document,
comp.dateStart,
comp.companyName,
comp.fantasyName,
comp.legalNature,
comp.mainActivity,
comp.situation,
comp.shareCapital,
comp.idCompanyStatus,
pp.userCredentialId,
uc.name,
cs.name AS 'nameStatus',
cs.color AS 'colorStatus',
cs.description,
comp.idPurchasedProduct,
comp.actived,
comp.createAt,
comp.updateAt,
comp.phone
FROM `PurchasedProduct` pp
INNER JOIN
`Company` comp on comp.idPurchasedProduct = pp.id
INNER JOIN
`UserCustomer` uc on pp.userCredentialId = uc.credentialId
INNER JOIN
`CompanyStatus` cs on cs.id = comp.idCompanyStatus
WHERE
comp.actived = 1
LIMIT 0,5;
SELECT COUNT(id) AS totalItems, CEILING(COUNT(id) / 10) AS totalPages FROM Company;
I would like the result shown to be all queries on the screen.
Basically, what I want is that the result shown when executing the query is the first and second "select" together.
I really don't know how or don't understand how to do this.
Example:
first result with seconde result
I want to show both results at once.
The documents is fake, not real. Only for demo.
You should be able to do by having the second query as its own JOIN query. Since there is no group by, it is only returning a single row. By no join condition, the value will be available for every row otherwise. So you SHOULD be able to get by doing
select
[ all your other columns ],
JustCounts.TotalItems,
JustCounts.TotalPages
from
[PurchasedProduct and all your other joins]
JOIN ( SELECT
COUNT(id) AS totalItems,
CEILING(COUNT(id) / 10) AS totalPages
FROM Company ) as JustCounts
where
[rest of your original query]
Server won't byte on this query, it takes too long to execute:
select prodavac.id, count(artikl.id) as brojartikala, count(poruceno.id) as brojporudzbina from prod_prodavac prodavac
inner join prod_artikl artikl
on prodavac.id=artikl.prodavacid
inner join prod_poruceno poruceno
on prodavac.id=poruceno.prodavacid
group by prodavac.id
On the other hand, both semi-queries run mega fast:
select prodavac.id, count(artikl.id) as brojartikala from prod_prodavac prodavac
inner join prod_artikl artikl
on prodavac.id=artikl.prodavacid
group by prodavac.id
Also the other one:
select prodavac.id, count(poruceno.id) as brojporudzbina from prod_prodavac prodavac
inner join prod_poruceno poruceno
on prodavac.id=poruceno.prodavacid
group by prodavac.id
order by prodavac.id asc
I would really like to do it in one query, so how to merge them correct way? All IDs are indexed integers.
Explain select shows this:
Depending on the relations between the tables and the data, your combined query might not even return the desired result. For a simple count of relations you can use correlated subqueries in the SELECT clause:
select prodavac.id, (
select count(*)
from prod_artikl artikl
where artikl.prodavacid = prodavac.id
) as brojartikala, (
select count(*)
from prod_poruceno poruceno
where poruceno.prodavacid = prodavac.id
) as brojporudzbina
from prod_prodavac prodavac
order by prodavac.id asc
I'm trying to fetch all the rows from table_m which also have an index in table_mi and I'm expecting to get 2 rows as a result (with m.id=3 and m.id=9) - but if I add GROUP_CONCAT to my select then I only get one row returned. Am I having a misshap somewhere within those joins of mine?
Query:
SELECT
m.id,
m.name,
m.keyword,
IFNULL(GROUP_CONCAT(r.keyword),'TEST') AS restrictions
FROM
table_m AS m
INNER JOIN
table_mi as mi ON m.id=mi.m_id
LEFT JOIN
table_ri as ri ON m.id=ri.m_id
LEFT JOIN
table_r AS r ON ri.r_id=r.id
WHERE
(
m.id>0
AND m.active=1
AND mi.p_id=0
AND (mi.pa_id="11" OR (mi.pa_id=0 AND mi.id!=0))
AND mi.u_id=IF((SELECT id FROM table_mi WHERE p_id=0 AND pa_id="11" AND u_id="2")>0,"2",0)
) OR mi.id=0
ORDER BY
mi.priority;
This is what I'm getting as a result:
ID NAME KEYWORD RESTRICTIONS
9 test_a key_a r_key_2,r_key_3,r_key_4
This is what I'm expecting:
ID NAME KEYWORD RESTRICTIONS
9 test_a key_a r_key_2,r_key_3,r_key_4
3 test_b key_b TEST
Please see my full example with schema on sql fiddle: http://sqlfiddle.com/#!2/359d9/1
GROUP_CONCAT is an aggregate function. It will bring back a single row UNLESS you specify a GROUP BY clause (with any fields that are not in the GROUP BY being aggregate fields)
Before the ORDER BY add the following:-
GROUP BY m.id, m.name, m.keyword
That said it looks like you might want to use CONCAT to join 2 values together rather than GROUP_CONCAT
As an aside, your SQL might be easier to read if you eliminate the subselect. Assuming it is bringing back a single record then possibly as follows
SELECT
m.id,
m.name,
m.keyword,
IFNULL(GROUP_CONCAT(r.keyword),'TEST') AS restrictions
FROM
table_m AS m
INNER JOIN
table_mi as mi ON m.id=mi.m_id
LEFT JOIN
table_ri as ri ON m.id=ri.m_id
LEFT JOIN
table_r AS r ON ri.r_id=r.id
LEFT OUTER JOIN
table_mi AS mi2 ON mi2.p_id=0 AND mi2.pa_id="11" AND mi2.u_id="2"
WHERE
(
m.id>0
AND m.active=1
AND mi.p_id=0
AND (mi.pa_id="11" OR (mi.pa_id=0 AND mi.id!=0))
AND mi.u_id=IF(mi2.id >0,"2",0)
) OR mi.id=0
ORDER BY
mi.priority;
You do no need GROUP_CONCAT to achieve what you want.
Instead of :
IFNULL(GROUP_CONCAT(r.keyword),'TEST') AS restrictions
use
IFNULL(r.keyword,'TEST') AS restrictions
OR:
Keep the query as it is and add GROUP BY m.id before ORDER BY
I will try to explain things as much as I can.
I have following query to fetch records from different tables.
SELECT
p.p_name,
p.id,
cat.cat_name,
p.property_type,
p.p_type,
p.address,
c.client_name,
p.price,
GROUP_CONCAT(pr.price) AS c_price,
pd.land_area,
pd.land_area_rp,
p.tagline,
p.map_location,
r.id,
p.status,
co.country_name,
p.`show`,
u.name,
p.created_date,
p.updated_dt,
o.type_id,
p.furnished,
p.expiry_date
FROM
property p
LEFT OUTER JOIN region AS r
ON p.district_id = r.id
LEFT OUTER JOIN country AS co
ON p.country_id = co.country_id
LEFT OUTER JOIN property_category AS cat
ON p.cat_id = cat.id
LEFT OUTER JOIN property_area_details AS pd
ON p.id = pd.property_id
LEFT OUTER JOIN sc_clients AS c
ON p.client_id = c.client_id
LEFT OUTER JOIN admin AS u
ON p.adminid = u.id
LEFT OUTER JOIN sc_property_orientation_type AS o
ON p.orientation_type = o.type_id
LEFT OUTER JOIN property_amenities_details AS pad
ON p.id = pad.property_id
LEFT OUTER JOIN sc_commercial_property_price AS pr
ON p.id = pr.property_id
WHERE p.id > 0
AND (
p.created_date > DATE_SUB(NOW(), INTERVAL 1 YEAR)
OR p.updated_dt > DATE_SUB(NOW(), INTERVAL 1 YEAR)
)
AND p.p_type = 'sale'
everything works fine if I exclude GROUP_CONCAT(pr.price) AS c_price, from above query. But when I include this it just gives one result. My intention to use group concat above is to fetch comma separated price from table sc_commercial_property_price that matches the property id in this case p.id. If the records for property exist in sc_commercial_property_price then fetch them in comma separated form along with other records. If not it should return blank. What m I doing wrong here?
I will try to explain again if my problem is not clear. Thanks in advance
The GROUP_CONCAT is an aggregation function. When you include it, you are telling SQL that there is an aggregation. Without a GROUP BY, only one row is returns, as in:
select count(*)
from table
The query that you have is acceptable syntax in MySQL but not in any other database. The query does not automatically group by the columns with no functions. Instead, it returns an arbitrary value. You could imagine a function ANY, so you query is:
select any(p.p_name) as p_num, any(p.tagline) as tagline, . . .
To fix this, put all your current variables in a group by clause:
GROUP BY
p.p_name,
p.id,
cat.cat_name,
p.property_type,
p.p_type,
p.address,
c.client_name,
p.price,
pd.land_area,
pd.land_area_rp,
p.tagline,
p.map_location,
r.id,
p.status,
co.country_name,
p.`show`,
u.name,
p.created_date,
p.updated_dt,
o.type_id,
p.furnished,
p.expiry_date
Most people who write SQL think it is good form to include all the group by variables in the group by clause, even though MySQL does not necessarily require this.
Add GROUP BY clause enumerating whatever you intend to have separate rows for. What happens now is that it picks some value for each result column and group_concats every pr.price.
I have this query...
$sQuery = "
SELECT SQL_CALC_FOUND_ROWS ".str_replace(" , ", " ", implode(", ", $aColumns))."
FROM dominios left join datas on dominios.id_dominio=datas.id_dominio
left join dnss on dominios.id_dominio=dnss.id_dominio
left join entidades_gestoras on dominios.id_dominio=entidades_gestoras.id_dominio
left join estados on dominios.id_dominio=estados.id_dominio
left join ips on dominios.id_dominio=ips.id_dominio
left join quantidade_dnss on dominios.id_dominio=quantidade_dnss.id_dominio
left join responsaveis_tecnicos on dominios.id_dominio=responsaveis_tecnicos.id_dominio
left join titulares on dominios.id_dominio=titulares.id_dominio
WHERE dominios.estado not like 2 and dominios.estado not like 0 AND data_expiracao > '".date("Ymd")."' $sWhere $where
GROUP BY dominio
$sOrder
$sLimit
";
It returns me the results I 'need'...
But the Group By, it show me the first result that appear on the database, and I needed the last...
How can I do this? :s
Edited
This is the final query, without those variables
SELECT SQL_CALC_FOUND_ROWS `datas`.`data_insercao`, `datas`.`data_expiracao`, `datas`.`data_registo`,
`dominios`.`dominio`,
`titulares`.`nome`, `titulares`.`morada`, `titulares`.`email`, `titulares`.`localidade`, `titulares`.`cod_postal`,
`entidades_gestoras`.`nome`, `entidades_gestoras`.`email`,
`responsaveis_tecnicos`.`nome`, `responsaveis_tecnicos`.`email`,
`ips`.`ip`, `dominios`.`id_dominio` FROM dominios left join datas on dominios.id_dominio=datas.id_dominio
left join dnss on dominios.id_dominio=dnss.id_dominio
left join entidades_gestoras on dominios.id_dominio=entidades_gestoras.id_dominio
left join estados on dominios.id_dominio=estados.id_dominio
left join ips on dominios.id_dominio=ips.id_dominio
left join quantidade_dnss on dominios.id_dominio=quantidade_dnss.id_dominio
left join responsaveis_tecnicos on dominios.id_dominio=responsaveis_tecnicos.id_dominio left join titulares on dominios.id_dominio=titulares.id_dominio WHERE dominios.estado not like 2 and dominios.estado not like 0 AND data_expiracao > '20120730' GROUP BY dominio ORDER BY `datas`.`data_insercao` asc LIMIT 0, 10
General considerations
I'm not sure what columsn you have in aColumns, or what table that dominio column comes from. When you group a number of rows using GROUP BY, then the columns you select for your result should either have the same value for all rows of the group (i.e. be functionally dependent), or should be some aggregate function combining the values of all the rows in the group.
Some SQL dialects enforce this. MySQL doesn't, but if you select an unaggregated column which has different values within the group, there are no guarantees as to what value will actually be returned to you. It might come from any row within the group. So there is no way to get the “last” of these rows, as there isn't any inherent order. In simple cases you can use MIN or MAX to select the value you need. In more complicated cases, you'll most likely have to use subqueries to do the selection from within the groups.
For example, this answer computes for every Name (which corresponds to your dominio grouping column) the last value of Action based on an ordering by ascending Time. Or rather the first value using a descending ordering, which is the same.
Your application
As your comment below indicates that you want the maximal id_dominio for each dominio in dominios, I suggest the following:
SELECT …
FROM (SELECT MAX(id_dominio) AS id_dominio
FROM dominios
GROUP BY dominio
WHERE estado <> 2
AND estado <> 0
) domIds
LEFT JOIN datas ON domIds.id_dominio=datas.id_dominio
…
So there will be one subquery to compute the maximal id_dominio for each dominio group, and all subsequent joins can use the IDs from that subquery instead of the full dominio table. If you need other columns from the dominio table as well, you might have to include that in the join again, so that you can get all the values from those row3s whose IDs you selected in the subquery.
By default MySQL sorts records in ascending order, to get last records first you need to sort the records in DESCNDING ORDER:
$sOrder DESC