I'm using MySql V5.7. I have a table PatientAppointment. I need to GROUP BY CDRId which is a column in the same table. Here's the query:
SELECT AppointmentDateTime,
duration,
minutes,
#prev_month := BillingMonth BillingMonth,
#prev_total := total total
FROM (select AppointmentDateTime,
duration,
#cur_dur := ((case when duration like '% hour%' then substring_index(duration, ' hour', 1) * 60 else 0 end) +
(case when duration like '%min%' then substring_index(substring_index(duration, ' min', 1), ' ', -1) + 0 else 0 end)) as minutes,
CASE WHEN #year_month = date_format(AppointmentDateTime, '%Y-%m')
THEN #cum_sum := #cum_sum + #cur_dur
ELSE #cum_sum := #cur_dur
END total,
#year_month := date_format(AppointmentDateTime, '%Y-%m') BillingMonth
from PatientAppointment, (SELECT #year_month:='', #cum_sum:=0, #cur_dur:=0) variables
GROUP BY CDRId <------ ERROR
ORDER BY AppointmentDateTime) subquery,
(SELECT #prev_month:=0, #prev_total:=0) variable
ORDER BY AppointmentDateTime, total
Here is a working db<>fiddle.
Please help me. I want the entire result set to be grouped by CDRId
If we cannot use GROUP BY clause here, can we do it some logic changes here.
This is the type of grouping I want. See this:
I'm getting this error:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server v...
Unfortunately, SQL has no way of "merging table cells" like you show in your screenshot. SQL is not like a spreadsheet.
You must fetch the rows and then work out in application code how you want to group them.
(You asked me on another thread to come here and give an answer.)
Related
I have a multi-join query that targeting the hospital's chart database.
this takes 5~10 seconds or more.
This is the visual expain using mysql workbench.
The query is below.
select sc.CLIENT_ID as 'guardianId', sp.PET_ID as 'patientId', sp.NAME as 'petName'
, (select BW from syn_vital where HOSPITAL_ID = sp.HOSPITAL_ID and PET_ID = sp.PET_ID order by DATE, TIME desc limit 1) as 'weight'
, sp.BIRTH as 'birth', sp.RFID as 'regNo', sp.BREED as 'vName'
, (case when ss.NAME like '%fel%' or ss.NAME like '%cat%' or ss.NAME like '%pawpaw%' or ss.NAME like '%f' then '002'
when ss.NAME like '%canine%' or ss.NAME like '%dog%' or ss.NAME like '%can%' then '001' else '007' end) as 'sCode'
, (case when LOWER(replace(sp.SEX, ' ', '')) like 'male%' then 'M'
when LOWER(replace(sp.SEX, ' ', '')) like 'female%' or LOWER(replace(sp.SEX, ' ', '')) like 'fam%' or LOWER(replace(sp.SEX, ' ', '')) like 'woman%' then 'F'
when LOWER(replace(sp.SEX, ' ', '')) like 'c.m%' or LOWER(replace(sp.SEX, ' ', '')) like 'castratedmale' or LOWER(replace(sp.SEX, ' ', '')) like 'neutered%' or LOWER(replace(sp.SEX, ' ', '')) like 'neutrality%man%' or LOWER(replace(sp.SEX, ' ', '')) like 'M.N%' then 'MN'
when LOWER(replace(sp.SEX, ' ', '')) like 'woman%' or LOWER(replace(sp.SEX, ' ', '')) like 'f.s%' or LOWER(replace(sp.SEX, ' ', '')) like 'S%' or LOWER(replace(sp.SEX, ' ', '')) like 'neutrality%%' then 'FS' else 'NONE' end) as 'sex'
from syn_client sc
left join syn_tel st on sc.HOSPITAL_ID = st.HOSPITAL_ID and sc.CLIENT_ID = st.CLIENT_ID
inner join syn_pet sp on sc.HOSPITAL_ID = sp.HOSPITAL_ID and sc.FAMILY_ID = sp.FAMILY_ID and sp.STATE = 0
inner join syn_species ss on sp.HOSPITAL_ID = ss.HOSPITAL_ID and sp.SPECIES_ID = ss.SPECIES_ID
WHERE
trim(replace(st.NUMBER, '-','')) = '01099999999'
and trim(sc.NAME) = 'johndoe'
and sp.HOSPITAL_ID = 'HOSPITALID999999'
order by TEL_DEFAULT desc
I would like to know how to improve the performance of this complex query.
The most obvious performance killers in your query are the non-sargable criteria in your where clause.
trim(replace(st.NUMBER, '-','')) = '01099999999'
This cannot use any available index as you have applied a function to the column, which needs to be evaluated before the comparison can be made.
As suggested by Pham, you could change your criterion to -
st.number IN ('01099999999', '01-099-999-999', 'ALL_OTHERS_FORMAT_YOU_ACCEPTS...')
or better still would be to normalize the numbers before you store them (you can always apply formatting for display purposes), that way you know how to search the stored data. Strip all the hyphens and spaces from the existings numbers -
UPDATE syn_tel
SET number = REPLACE(REPLACE(number, '-',''), ' ', '')
WHERE number LIKE '% %' OR number LIKE '%-%';
Similarly for the next criterion -
trim(sc.NAME) = 'johndoe'
The name should be trimmed before being stored in the database so there is no need to trim it when searching it. Update already stored names to trim whitespace -
UPDATE syn_client
SET NAME = TRIM(NAME)
WHERE NAME LIKE ' %' OR NAME LIKE '% ';
Changing sp.HOSPITAL_ID = 'HOSPITALID999999' to sc.HOSPITAL_ID = 'HOSPITALID999999' will allow for the use of a composite index on syn_client (HOSPITAL_ID, name) assuming you drop the TRIM() from the previously discussed criterion.
The sorting in your sub-query for weight might be wrong -
order by DATE, TIME desc limit 1
presumably you want the most recent weight -
order by `DATE` desc, `TIME` desc limit 1
/* OR */
order by CONCAT(`DATE`, ' ', `TIME`) desc limit 1
order by DATE, TIME desc -- really? That's equivalent to date ASC, time DESC. If you want "newest first", then ORDER BY date DESC, time DESC. Furthermore, it is usually bad practice and clumsy to code when you have DATE and TIME in separate columns. Is there a strong reason for storing them separately? It is reasonably easy to split them apart in a SELECT.
Similarly, cleanse NUMBER and NAME when inserting.
This will make the first subquery much faster:
syn_vital needs INDEX(hostital_id, pet_id, date, time, BW)
LIKE with a leading wildcard (%) is slow, but you probably cannot avoid it in this case.
LOWER(replace(sp.SEX, ' ', '')) -- Cleanse the input during INSERT, not on output!.
LOWER(...) -- With a suitable COLLATION (eg, the default), calling LOWER is unnecessary.
Some of these 'composite' INDEXes may be useful:
ss: INDEX(HOSPITAL_ID, SPECIES_ID, NAME)
st: INDEX(HOSPITAL_ID, CLIENT_ID, NUMBER)
sp: INDEX(HOSPITAL_ID, PET_ID)
What table is TEL_DEFAULT in?
You may want to:
Create index on syn_client(hospital_id, name --,tel_default?)
Create index on syn_tel(hospital_id, client_id, number)
Create index on syn_pet(hospital_id, family_id, state)
Create index on syn_species(hospital_id, species_id)
Change your query to:
SELECT ...
FROM syn_client sc
INNER JOIN syn_tel st ON sc.hospital_id = st.hospital_id AND sc.client_id = st.client_id
INNER JOIN syn_pet sp ON sc.hospital_id = sp.hospital_id AND sc.family_id = sp.family_id AND sp.state = 0
INNER JOIN syn_species ss ON sp.hospital_id = ss.hospital_id AND sp.species_id = ss.species_id
WHERE st.number IN ('01099999999', '01-099-999-999', 'ALL_OTHERS_FORMAT_YOU_ACCEPTS...')
AND trim(sc.name) = 'johndoe' --sc.name = 'johndoe' with standardize data input
AND sc.hospital_id = 'HOSPITALID999999' --not sp.hospital_id
ORDER BY tel_default DESC;
I have taken reference from the internet about one user-defined function to locate 'nth occurrence of a string to do the sort column name in the database. I am using MySQL 5.5 version, not the latest version. Here is my sample database link https://dbfiddle.uk/?rdbms=mysql_5.5&fiddle=bcb32a6b47d0d5b061fd401d0888bdc3
My problem is I want to sort column name in the database follow the prefix number, but I am using below the SQL query, it doesn't work.
select t.id,t.name
from
(
select t.*, cast((case when col1_col2_ref > 0
then
substring_index(modified_name,'-',1)
else
modified_name
end
) as unsigned) col1
, cast((case when col1_col2_ref > 0
and col3_ref > 0
then
substr(modified_name,(col1_col2_ref + 1),(col3_ref - (col1_col2_ref + 1)))
when col1_col2_ref > 0
then
substr(modified_name,(col1_col2_ref + 1))
end) as unsigned) col2
, cast((case when col3_ref > 0
and col4_ref > 0
then
substr(modified_name,(col3_ref + 1),(col4_ref - (col3_ref + 1)))
when col3_ref > 0
then
substr(modified_name,(col3_ref + 1))
end) as unsigned) col3
, cast((case when col4_ref > 0
then
substr(modified_name,(col4_ref + 1))
end) as unsigned) col4
from
(
select t.*,substring_index(name,' ',1) modified_name
,locate('-',name,1) col1_col2_ref
,locate('/',name,1) col3_ref
,locate('/',name,locate('/',name,1)+1) col4_ref
from filing_code_management t
) t
) t
order by col1,col2,col3,col4
It shows me below the result, it cannot sort properly.
Output 1
Actually I want the output sample like below:
Output 2
Output 3
This is before I can sort the column name link, https://dbfiddle.uk/?rdbms=mysql_5.5&fiddle=6b12a4d42359cb30f27a5bfb9d0c8210. After I am inserted into new data, it cannot work for me. Maybe an example in new data like this error (R)100-6-2-2 Mesyuarat Majlis Kerajaan Negeri (MMKN) JKK if I put () in front. Or in new data like this error 100-1-1 Penggubalan/Penyediaan/Pindaan Undang-Undang/Peraturan if I put / in between the word.
Hope someone can guide me to solve this problem. Thanks.
You should be able to adapt the following code to your needs (tested at your DB Fiddle!). I've used the file_name column instead of the name column to slightly simplify building the sort fields, as it seems the file name is always repeated in the first part of the name field anyway.
This would be quite a bit simpler using regular expression support, but I note that the version of MySQL you are using doesn't have this feature (I think it arrives in SQL 8.0, if I'm not mistaken).
SELECT id,
num_hyphens,
CAST(SUBSTRING_INDEX(CONCAT(file_name_adj,'-'), '-', 1) AS UNSIGNED) AS sort1,
CAST(CASE WHEN num_hyphens = 0
THEN '0'
ELSE SUBSTRING_INDEX(SUBSTRING_INDEX(file_name_adj,'-', 2), '-',-1)
END AS UNSIGNED) AS sort2,
CAST(CASE WHEN num_hyphens <= 1
THEN '0'
ELSE SUBSTRING_INDEX(SUBSTRING_INDEX(file_name_adj,'-', 3), '-',-1)
END AS UNSIGNED) AS sort3,
CAST(CASE WHEN num_hyphens <= 2
THEN '0'
ELSE SUBSTRING_INDEX(file_name_adj, '-', -1)
END AS UNSIGNED) AS sort4,
file_name,
name
FROM (
SELECT id, name, MID(file_name, instr(file_name, ')') + 1) AS file_name_adj, file_name,
LENGTH(file_name) - LENGTH(REPLACE(file_name, '-', '')) AS num_hyphens
FROM filing_code_management
) t1
ORDER BY sort1, sort2, sort3, sort4
I am trying to add a FORMAT to my query, but when I run my query I get an error.
Here is my query:
SELECT CONCAT('€ ', COALESCE(SUM(r), 0) - COALESCE(SUM(l), 0)) as totaal
FROM trans
WHERE user_id = 1
AND k_id= 110
GROUP
BY user_id
LIMIT 0,1
I tried multiple statements:
(FORMAT(r)) and (FORMAT(l)) gives error
FORMAT(SUM(r), 0) - FORMAT(SUM(l), 0) gives wrong response
CONCAT(FORMAT('€ ', COALESCE(SUM(r), 0) - COALESCE(SUM(l), 0))) gives error
FORMAT(CONCAT('€ ', COALESCE(SUM(r), 0) - COALESCE(SUM(l), 0))) gives also error
Can someone help me with this statement?
format(X,D) takes a number as the first parameter and the decimal places as the second parameter so it should be put where the result is a number and provided with a number of decimal places:
CONCAT('€ ', FORMAT(COALESCE(SUM(r), 0) - COALESCE(SUM(l), 0),0))
I am using a mysql case for some calculation and my demand is that if the output is negative then i will show 0 in the place of the negative column.Otherwise the positive value.
Let me post the query:
select
concat(jo.title,' (', CCP.name, ')'), PL.analyst, PL.consultant,
PL.csm,
(CASE
WHEN PL.productType like 'Staffing' THEN (SELECT ((DATEDIFF(PL.dateEnd, PL.dateClientEffective)) -((WEEK(PL.dateEnd) - WEEK(PL.dateClientEffective)) * 2) - (case when weekday(PL.dateEnd) = 6 then 1 else 0 end) - (case when weekday(PL.dateClientEffective) = 5 then 1 else 0 end)) as DifD) * 8 * (PL.clientBillRate-PL.payRate) ELSE (PL.salary*PL.fee)END) Value
Now if the value is negative, then it should show 0 else will show the original value
The simplest way is simply to use greatest():
select greatest(<expression>, 0) as col
It is unclear what column/expression you want to do this for in your query. But, you can just plug it in.
The advantage of this method over other methods is:
The only needs to appear once in the query. Not having to duplicate code reduces the likelihood of errors.
There is no need for a subquery. This is an issue in MySQL only because MySQL materializes subqueries.
Simply use SIGN() in mysql
It returns 1 as a positive value and -1 is a negative value
Example
SELECT SIGN(500); -- (Output is 1)
SELECT SIGN(2500); -- (Output is 1)
SELECT SIGN(-999); -- (Output is -1)
SELECT SIGN(-5); -- (Output is -1)
please check this, haven't tested yet.
Note: this might not be the best solution
select concat(jo.title,' (', CCP.name, ')'), PL.analyst, PL.consultant, PL.csm,
if(
(CASE WHEN PL.productType like 'Staffing' THEN (SELECT ((DATEDIFF(PL.dateEnd, PL.dateClientEffective)) -((WEEK(PL.dateEnd) - WEEK(PL.dateClientEffective)) * 2) -
(case when weekday(PL.dateEnd) = 6 then 1 else 0 end) -
(case when weekday(PL.dateClientEffective) = 5 then 1 else 0 end)) as DifD) * 8 * (PL.clientBillRate-PL.payRate) ELSE (PL.salary*PL.fee)END)
< 0,0,
(CASE WHEN PL.productType like 'Staffing' THEN (SELECT ((DATEDIFF(PL.dateEnd, PL.dateClientEffective)) -((WEEK(PL.dateEnd) - WEEK(PL.dateClientEffective)) * 2) -
(case when weekday(PL.dateEnd) = 6 then 1 else 0 end) -
(case when weekday(PL.dateClientEffective) = 5 then 1 else 0 end)) as DifD) * 8 * (PL.clientBillRate-PL.payRate) ELSE (PL.salary*PL.fee)END)
) Value
Just do like this :
select temp.* , --all your columns
if(temp.value<0,0,temp.value) as Value
from
( your query mentioned above) temp;
the query is as follows
SELECT id, phonenumber CONCAT( 'A reminder for ', name, 'underfive number ', underfiveNO, 'for ', message, 'tomorrow.If shot was administered please ignore this message ' )
FROM appointment WHERE MONTH (current_date) = MONTH (appointmentdate)
AND DAY (current_date) < DAY (appointmentdate)
AND (NOT lastnotified = current_date) OR lastnotified IS NULL;
the error am getting is
ERROR 1064(42000) you have an error in your sql syntax; check the manual that corresponds to your mysql server version for the right syntax to use near '('A reminder for',name,'under five number',undefiveNo, 'for', message'at line1
You forgot a comma
SELECT id, phonenumber, CONCAT( '...
^-----------------herre
There should be separator in between phonenumber and CONCAT() in your query: try with this
SELECT id, phonenumber, CONCAT('A reminder for ', name, ' underfive number ', underfiveNO, ' for ', message, ' tomorrow. If shot was administered please ignore this message' )
FROM appointment WHERE MONTH (current_date) = MONTH (appointmentdate)
AND DAY (current_date) < DAY (appointmentdate)
AND ((NOT lastnotified = current_date) OR lastnotified IS NULL);
and also as you are adding a OR condition on lastnotified column, it should be enclosed with in paranthesis to meet either of the condition