The given query works fine, But i want some modification. In 3rd line i have
LEFT JOIN tbl_emp ON inventory.itemGiven = tbl_emp.Sname
This is filter the output if match.
But problem is, all the inventory.itemGiven is not present in tbl_emp.Sname. and i want, if not match then the result store in different field.
SELECT `inventory`.`ID` , `inventory`.`out_` , `inventory`.`userName` , date_format( `inventory`.`date` , '%Y-%m-%d' ) AS date, `department`.`id` , `tbl_emp`.`emp_id_number`
FROM `inventory`
LEFT JOIN `tbl_emp` ON `inventory`.`itemGiven` = `tbl_emp`.`Sname`
LEFT JOIN `department` ON `inventory`.`givenDept` = `department`.`dept`
WHERE `out_` >0
LIMIT 0 , 30
I know this is possible, please anybody help me.
Thanks in advance.
Replace tbl_emp.emp_id_number with IFNULL(tbl_emp.emp_id_number,inventory.itemGiven) in select part
SELECT `inventory`.`ID` , `inventory`.`out_` , `inventory`.`userName` , date_format( `inventory`.`date` , '%Y-%m-%d' ) AS date, `department`.`id` , `tbl_emp`.`emp_id_number`
FROM `inventory`
LEFT JOIN `tbl_emp` ON `inventory`.`itemGiven` = `tbl_emp`.`Sname`
LEFT JOIN `department` ON `inventory`.`givenDept` = `department`.`dept`
WHERE `out_` >0
Related
When executing a query statement, the speed is very slow.
SELECT
T1.APPL_SEQ
, T1.COMP_CD
, (SELECT COMP_NM FROM tb_company WHERE COMP_CD = T1.COMP_CD) AS COMP_NM
, T1.GPROD_CD
, (SELECT GPROD_NM FROM tb_gprod WHERE GPROD_CD = T1.GPROD_CD) AS GPROD_NM
, T1.SITE_CD
, (SELECT SITE_NM FROM tb_site WHERE SITE_CD = T1.SITE_CD) AS SITE_NM
, T1.INFLOW_CD
, T1.INFLOW_URL
, T1.STATUS
, T1.REG_DTM
, DECRYPTO(T1.NAME) AS NAME
, DECRYPTO(T1.HP) AS HP
, ifnull(T1.AGE,T1.`115`) AS AGE
, ifnull(T1.GENDER,T1.`116`) AS GENDER
, ifnull(T1.MEMO,T1.`120`) AS MEMO
, ifnull(T1.`105`,T1.`124`) AS TIME
, T1.`125` AS AGE_CHILD
, T2.API_YN
, T2.API_START_DT
, T2.API_END_DT
, T2.API_CD
, T2.DATA_INFLOWCD
, T2.CONFIRM_YN
, T2.SALE_YN
, T2.SALE_PRICE
, T2.BREAKDOWN
, T2.INPUT_DATE
, T3.DIST_YN
, T3.DIST_DT
,(select ifnull((select timestampdiff(DAY, T11.REG_DTM,T1.REG_DTM) AS DIFF2REGTIME from tb_applicant T11 WHERE T11.HP = T1.HP AND T11.GPROD_CD = T1.GPROD_CD AND T11.REG_DTM < T1.REG_DTM order by T11.REG_DTM desc limit 1),-1)) AS HP2_COUNT
FROM
tb_applicant T1
LEFT JOIN mm_applicant T2
ON T1.APPL_SEQ = T2.APPL_SEQ
LEFT JOIN dist_applicant T3
ON T1.APPL_SEQ = T3.APPL_SEQ
LEFT JOIN tb_site T4
ON T4.site_cd = T1.SITE_CD and T4.comp_cd = T1.COMP_CD and T4.gprod_cd = T1.GPROD_CD
WHERE 1=1
AND T1.APPL_SEQ > 147293
AND T4.is_use = 'Y'
$Sql_Search
ORDER BY
$Sql_OrderBy
) U1
, (SELECT #ROWNUM := 0) U2
) V1";
,(select ifnull((...),-1)) AS HP2_COUNT
This is part of why it's so slow.
This query calculates the number of months difference by comparing REG_DTM when the td_applicant table has the same data for HP, GPROD, and COMP.
I don't need to get the date difference, is there any way to improve the query speed?
The main problem are those subselect in the select. As #Akina suggested, you should move them in FROM and make them as join.
They way you have done implies that each subselect is executed for each row returned by the main select.
You have 4 subselect that mean if you have 100 rows you execute 1 (main select) + (4*100) query so 401 instead of 1.
Using join allow the internal optimization engine to choose the best strategy to perform the query, in your way practically no optimization are applied.
I post a short example of how should be your query, didn't refactor the whole query since without database is a bit difficult to do it and I can easily produce a wrong query.
Notice that you select twice on tb_site with different condition, so is up to you to put the correct one.
SELECT T1.APPL_SEQ, T1.COMP_CD, T1.GPROD_CD, T1.SITE_CD
TC.COMP_NM,
TG.GPROD_NM,
TS.SITE_NM,
......
FROM tb_applicant T1
LEFT JOIN mm_applicant T2
JOIN tb_company TC on TC.COMP_CD = T1.COMP_CD
JOIN tb_gprod TG on GPROD_CD = T1.GPROD_CD
JOIN tb_site TS on TS.SITE_CD = T1.SITE_CD ON T1.APPL_SEQ = T2.APPL_SEQ
.......
I want to have a table where I can view today's balance as well as yesterday's balance as two different column. Is there any way I can select from two different dates?
Below is the SQL statement I have tried however I am not able to see the yesterday balance.
(SELECT food.food_id, food.food_name, food.food_chi_name, food.food_category, food.chinesechar, SUM(inventory.tmr_input+inventory.final_balance), SUM(inventory.balance), SUM(inventory.input), SUM(inventory.reject), SUM(inventory.final_balance), SUM(inventory.tmr_input), SUM(inventory.sale), SUM(inventory.theoritical), SUM(inventory.yest_theoritical), SUM(inventory.3PMsale), SUM(inventory.3PMbalance), SUM(inventory.wholesale) FROM inventory INNER JOIN food ON inventory.food_id=food.food_id WHERE food.outlet = 'T11' AND inventory.date = '04/30/2021' GROUP BY food.food_id ORDER BY food.food_id ASC); (SELECT SUM(inventory.balance) as yesterday_balance FROM inventory INNER JOIN food ON inventory.food_id=food.food_id WHERE food.outlet = 'T11' AND inventory.date = '04/29/2021' GROUP BY food.food_id ORDER BY food.food_id ASC);
You can use a subselect for that purpose
And using aliases helps to get a better overview
SELECT
f1.food_id
, f1.food_name
, f1.food_chi_name
, f1.food_category
, f1.chinesechar
, SUM(i1.tmr_input+i1.final_balance)
, SUM(i1.balance)
, SUM(i1.input)
, SUM(i1.reject)
,SUM(i1.final_balance)
, SUM(i1.tmr_input)
, SUM(i1.sale)
, SUM(i1.theoritical)
, SUM(i1.yest_theoritical)
, SUM(i1.`3PMsale`)
, SUM(i1.`3PMbalance`)
, SUM(i1.wholesale)
,(SELECT SUM(i2.balance)
FROM
inventory i2 INNER JOIN food f2 ON i2.food_id=f2.food_id
WHERE f2.outlet = 'T11' AND i2.date = '04/29/2021'
AND f2.food_id = f1.food_id
) as yesterday_balance
FROM
inventory i1
INNER JOIN
food f1 ON i1.food_id=f1.food_id
WHERE
f1.outlet = 'T11'
AND i1.date = '04/30/2021'
GROUP BY f1.food_id
ORDER BY f1.food_id ASC;
I am having trouble with a SQL query. So in my project user can reserve a ride. I want to display reserved rides by users ID (passenger_id) but query returns all users (driver_id) advertisements when user reserved a ride only for one of drivers advertisements.
SELECT advertisement.id
, COUNT(review.driver_id) AS 'review_count'
, ROUND(AVG(review.mark) ,1) AS 'rating'
, users.unique_id
, users.name
, users.surname
, users.phone
, YEAR(CURDATE()) - YEAR(users.birthdate) AS age
, users.image
, advertisement.from_city
, advertisement.to_city
, users.car_name
, users.car_model
, users.car_make_year
, advertisement.number_of_places
, advertisement.price
, advertisement.datetime
, advertisement.info
FROM reserved_rides
JOIN advertisement
ON reserved_rides.driver_id = advertisement.user_id
LEFT
JOIN review
ON reserved_rides.driver_id = review.driver_id
JOIN users
ON reserved_rides.driver_id = users.unique_id
WHERE reserved_rides.passenger_id = ?
GROUP
BY advertisement.id
ORDER
BY advertisement.datetime ASC
What is going wrong here?
I hope replacing GROUP BY advertisement.id with GROUP BY reserved_rides.driver_idsolves your problem. cheers
I am having around 2.5 lachs (250K) products and 2600 subcategories on magento application (community edition).
Query
SELECT 1 status
, e.entity_id
, e.type_id
, e.attribute_set_id
, cat_index.position AS cat_index_position
, e.name
, e.description
, e.short_description
, e.price
, e.special_price
, e.special_from_date
, e.special_to_date
, e.cost
, e.small_image
, e.thumbnail
, e.color
, e.color_value
, e.news_from_date
, e.news_to_date
, e.url_key
, e.required_options
, e.image_label
, e.small_image_label
, e.thumbnail_label
, e.msrp_enabled
, e.msrp_display_actual_price_type
, e.msrp
, e.tax_class_id
, e.price_type
, e.weight_type
, e.price_view
, e.shipment_type
, e.links_purchased_separately
, e.links_exist
, e.open_amount_min
, e.open_amount_max
, e.custom_h1
, e.awards
, e.region
, e.grape_type
, e.food_match
, e.udropship_vendor
, e.upc_barcode
, e.ean_barcode
, e.mpn
, e.size
, e.author
, e.format
, e.pagination
, e.publish_date
, price_index.price
, price_index.tax_class_id
, price_index.final_price
, IF(price_index.tier_price IS NOT NULL
, LEAST(price_index.min_price
, price_index.tier_price)
, price_index.min_price) AS minimal_price
, price_index.min_price
, price_index.max_price
, price_index.tier_price
FROM catalog_product_flat_1 e
JOIN catalog_category_product_index cat_index
ON cat_index.product_id = e.entity_id
AND cat_index.store_id = 1
AND cat_index.visibility IN(2,4)
AND cat_index.category_id = 163
JOIN catalog_product_index_price price_index
ON price_index.entity_id = e.entity_id
AND price_index.website_id = 1
AND price_index.customer_group_id = 0
GROUP
BY e.entity_id
ORDER
BY cat_index_position ASC
, cat_index.position ASC
LIMIT 15;
whenever accessing any products on this magento site it created a huge data under /tmp directory on theserver which is around 10 GB.
How can I fix this please suggest some solution.
Database size is 50 GB and server is nginx.
You are misusing GROUP BY. Please learn how it works. There's a misfeature in MySQL which allows you to misuse it. Unfortunately, queries that misuse it are very difficult to troubleshoot.
It is difficult to infer what you are trying to do from your query. When you're dealing with result sets of that size, it helps to know your intent.
You should know, if you don't already, that queries of the form
SELECT <<many columns>>
FROM large_table
JOIN another_large_table ON something
JOIN another_large_table ON something
ORDER BY some_arbitrary_column
LIMIT some_small_number
can be grossly inefficient because they have to generate an enormous result set, then sort the whole thing, then return the first results. The sort operation carries the whole result set with it. You could be instructing the MySQL server to sort a crore or two of rows (dozens of megarows).
It looks like you want the first fifteen results starting with the lowest cat_index.position value. Accordingly, you may be able to make your query faster by joining with an appropriate subset of the table you call cat_index, like so:
SELECT 1 status, many_other_columns
FROM catalog_product_flat_1 e
JOIN ( /* join only with fifteen lowest eligible position values in cat_index */
SELECT *
FROM catalog_category_product_index
WHERE store_id = 1
AND visibility IN(2,4)
AND category_id = 163
ORDER BY position ASC
LIMIT 15
) AS cat_index ON cat_index.product_id = e.entity_id
JOIN catalog_product_index_price price_index
ON price_index.entity_id = e.entity_id
AND price_index.website_id = 1
AND price_index.customer_group_id = 0
GROUP BY e.entity_id /*wrong!!*/
ORDER BY cat_index_position ASC, /* redundant!*/
cat_index.position ASC
LIMIT 15;
It's worth a try.
Are you have sufficient Hardware resources to run a big query and also please update you hardware configuration of server.
I have the following query and it gets the first result "Edit: of each contact" as I want but I do not need any other results per contact after. So example if they have 3 phone # and one is main, it gives me the main then the other 2. I have tried grouping but it ends up getting the first one pulled no matter if main or not. Any thoughts to how I could do this without doing a php check in the loop for if contact already exists?
SELECT pc.firstname, pc.lastname, pp.areacode, pp.prefix, pp.last4
, if(pc.mainphone = pp.phoneid,1,0) as phone_priority
FROM contacts pc
JOIN phone pp ON ( (pp.contid = pc.contid && pp.phoneid = pc.mainphone) || (pp.contid = pc.contid) )
ORDER BY pc.lastname ASC, pc.firstname ASC, phone_priority DESC
Table setup:
contacts (id, firstname, lastname, mainphone)
phone (id, areacode, prefix, last4)
Using MySQL 4.
Use a LIMIT expression to narrow the result set down to the first result. See SELECT Syntax for details.
Use LIMIT 1 at the end of your query
Use a left join:
SELECT pc.firstname,
pc.lastname,
pp.areacode,
pp.prefix,
pp.last4 ,
CASE
WHEN pp.mainphone IS NULL THEN 0
ELSE 1
END AS phone_priority
FROM contacts pc LEFT JOIN phone pp
ON pp.contid = pc.contid
AND pp.phoneid = pc.mainphone
ORDER BY pc.lastname ASC, pc.firstname ASC, phone_priority DESC
Try this variant -
SELECT t.contid
, t.firstname
, t.lastname
, if(t.phoneid IS NULL, p2.phoneid, t.phoneid) phone
, if(t.phoneid IS NULL, p2.areacode, t.areacode) areacode
, if(t.phoneid IS NULL, p2.prefix, t.prefix) prefix
, if(t.phoneid IS NULL, p2.last4, t.last4) last4
FROM
(
SELECT c.contid
, c.firstname
, c.lastname
, c.mainphone
, p.phoneid
, p.areacode
, p.prefix
, p.last4
FROM
contacts c
LEFT JOIN phone p
ON c.contid = p.contid AND c.mainphone = p.phoneid) t
LEFT JOIN phone p2
ON t.contid = p2.contid AND t.mainphone <> p2.phoneid
GROUP BY
t.contid