I need help as to how to convert this select to a delete statement.
SELECT stud_term_sum_div.id_num,
stud_term_sum_div.hrs_enrolled,
stud_term_sum_div.transaction_sts,
student_crs_hist.crs_cde,
student_crs_hist.transaction_sts
FROM stud_term_sum_div,
student_crs_hist
WHERE ( stud_term_sum_div.yr_cde = student_crs_hist.yr_cde ) and
( stud_term_sum_div.trm_cde = student_crs_hist.trm_cde ) and
( stud_term_sum_div.id_num = student_crs_hist.id_num ) and
( ( stud_term_sum_div.yr_cde = '2013' ) AND
( stud_term_sum_div.trm_cde = 'FA' ) AND
( stud_term_sum_div.hrs_enrolled >= 3.00 ) AND
( student_crs_hist.transaction_sts = 'D' ) )
The most straight-forward conversion is below:
DELETE * FROM stud_term_sum_div
WHERE ( stud_term_sum_div.yr_cde = student_crs_hist.yr_cde ) and
( stud_term_sum_div.trm_cde = student_crs_hist.trm_cde ) and
( stud_term_sum_div.id_num = student_crs_hist.id_num ) and
( ( stud_term_sum_div.yr_cde = '2013' ) AND
( stud_term_sum_div.trm_cde = 'FA' ) AND
( stud_term_sum_div.hrs_enrolled >= 3.00 ) AND
( student_crs_hist.transaction_sts = 'D' ) )
BUT, before you go executing that, please check that the WHERE clause really contains the conditions to be used for deletion. Note that this SQL statement will delete the entire row (a/k/a record) when the attributes in the WHERE clause satisfy the stated conditions.
If you only want to remove the data from the attributes (as opposed to the entire record), you'd need to use an SQL UPDATE statement instead. The (simplified) syntax for that is as follows:
UPDATE <table_name>
SET <attribute1> = <value1>
[, SET <attribute_n> = <value_n>...]
WHERE <conditions on which the record should be updated>
Doing a search on Bing, google, <insert your favorite search engine here> for "SQL DELETE" or "SQL UPDATE" should get you all the information you need (e.g. MSDN, for one).
Related
Why below sql statement keeps getting missing FROM clause entry for table error?
How to adjust this?
WITH SUBID AS (
SELECT * FROM "B_COLLECTION"."COLL_C_RECORD"
),
TR AS (
SELECT * FROM "B_TRACE"."PERSONAL_TC_RECORD"
)
SELECT "SUBJECT_C_ID"
FROM "B_COLLECTION"."COLL_C_RECORD"
WHERE ( SUBID.SUBJECT_ID = TR.PERSONAL_S_ID )
AND ( TR.STATE_ID ='5' OR TR.STATE_ID = 'A' OR TR.STATE_ID = 'C');
You are declaring SUBID and TR just fine, but since these are tables, your select statement does not know them yet.
Here you need to enter SUBID and TR in FROM clauses of your query. It should look somewhat like
WITH SUBID AS (
SELECT * FROM "B_COLLECTION"."COLL_C_RECORD"
) ,
TR AS (
SELECT * FROM "B_TRACE"."PERSONAL_TC_RECORD"
)
SELECT "SUBJECT_C_ID" FROM SUBID
WHERE SUBID."SUBJECT_ID" IN
(SELECT "PERSONAL_S_ID" FROM TR
WHERE TR."STATE_ID" = '5'
OR TR."STATE_ID" = 'A'
OR TR."STATE_ID" = 'C');
That is why you use WITH Clause only on repeating queries. Here it would actually be much nicier to use:
SELECT "SUBJECT_ID" FROM "B_COLLECTION"."COLL_C_RECORD" SUBID
WHERE SUBID."SUBJECT_ID" IN
(SELECT "PERSONAL_S_ID" FROM "B_TRACE"."PERSONAL_TC_RECORD" TR
WHERE TR."STATE_ID" = '5'
OR TR."STATE_ID" = 'A'
OR TR."STATE_ID" = 'C');
In the below SQL:
I need to add two columns in the result
1) Local_code
2)Local_CPTY_SYS_ID,
which are in HSBC_LOCAL_INVOL_PARTY table.
So far I have tried to add
select local_code from HSBC_LOCAL_INVOL_PARTY
h join t_cdr T2
on T2.counterparty_new = h.entity_code
but that doesn't work. It needs an explicit outer join in the end. Please help
SELECT
T2.counterparty_new,
T2.bis_entity_type_original,
T2.counterparty_new_desc,
T2.counterparty_new_attribute_6,
T2.method_original,
T2.netting_agreement_reference,
T2.internal_rating_new,
T2.counterparty_type_original,
T2.obligor_grade_new,
T2.pd_pre_floor_new,
T2.pd_new,
T2.lgd,
T2.rwa
from t_cdr T2,
(
SELECT * FROM (
SELECT
FINAL.FILTER_MARKER,
FINAL.entity_code
FROM (
SELECT
FILTER_POP.entity_code,
FILTER_POP.FILTER_MARKER
FROM (
SELECT
CASE
WHEN CONCAT(Dlgd,unfloored_lgd) IS NOT NULL
THEN 'EXCLUDE'
WHEN CONCAT(Dlgd,unfloored_lgd) IS NULL
THEN 'INCLUDE'
END AS FILTER_MARKER,
entity_code,
Dlgd,
unfloored_lgd
FROM
HSBC_LOCAL_INVOL_PARTY
WHERE
((HSBC_LOCAL_INVOL_PARTY.entity_code) NOT LIKE '%DUM%')
AND
((HSBC_LOCAL_INVOL_PARTY.entity_code) NOT LIKE '%HSBC%')
) FILTER_POP
GROUP BY
FILTER_POP.entity_code,
FILTER_POP.FILTER_MARKER) FINAL
GROUP BY
FINAL.FILTER_MARKER,
FINAL.entity_code
ORDER BY
FINAL.entity_code)
PIVOT
(
COUNT(FILTER_MARKER)
FOR FILTER_MARKER IN ('INCLUDE' AS INCLUDE,'EXCLUDE' AS EXCLUDE)
)
WHERE INCLUDE = 1 AND EXCLUDE = 0
) ENTITY_FILTER
WHERE ENTITY_FILTER.entity_code = T2.counterparty_new
AND T2.method_original = 'ADV'
ORDER BY T2.rwa DESC
Solved it: Look at the last few lines. Took a while but optimized it as well for performance.
SELECT
T2.counterparty_new,
T2.bis_entity_type_original,
T2.counterparty_new_desc,
T2.counterparty_new_attribute_6,
T2.method_original,
T2.netting_agreement_reference,
T2.internal_rating_new,
T2.counterparty_type_original,
T2.obligor_grade_new,
T2.pd_pre_floor_new,
T2.pd_new,
T2.lgd,
HSBC_LOCAL_INVOL_PARTY.local_code,
T2.rwa
from t_cdr T2,
(
SELECT * FROM (
SELECT
FINAL.FILTER_MARKER,
FINAL.entity_code
FROM (
SELECT
FILTER_POP.entity_code,
FILTER_POP.FILTER_MARKER
FROM (
SELECT
CASE
WHEN CONCAT(Dlgd,unfloored_lgd) IS NOT NULL
THEN 'EXCLUDE'
WHEN CONCAT(Dlgd,unfloored_lgd) IS NULL
THEN 'INCLUDE'
END AS FILTER_MARKER,
entity_code,
Dlgd,
unfloored_lgd
FROM
HSBC_LOCAL_INVOL_PARTY
WHERE
((HSBC_LOCAL_INVOL_PARTY.entity_code) NOT LIKE '%DUM%')
AND
((HSBC_LOCAL_INVOL_PARTY.entity_code) NOT LIKE '%HSBC%')
) FILTER_POP
GROUP BY
FILTER_POP.entity_code,
FILTER_POP.FILTER_MARKER) FINAL
GROUP BY
FINAL.FILTER_MARKER,
FINAL.entity_code
ORDER BY
FINAL.entity_code)
PIVOT
(
COUNT(FILTER_MARKER)
FOR FILTER_MARKER IN ('INCLUDE' AS INCLUDE,'EXCLUDE' AS EXCLUDE)
)
WHERE INCLUDE = 1 AND EXCLUDE = 0
) ENTITY_FILTER,HSBC_LOCAL_INVOL_PARTY
WHERE ENTITY_FILTER.entity_code = T2.counterparty_new
AND ENTITY_FILTER.entity_code = HSBC_LOCAL_INVOL_PARTY.entity_code(+)
AND T2.method_original = 'ADV'
ORDER BY T2.rwa DESC
I'm creating a view in MariaDB and i'm having trouble making it work for a couple of fields. Currently this is working:
( SELECT DISTINCT IFNULL(grades.`grade`,'No Grade')
FROM `table` grades
WHERE userinfo.`id` = grades.`id`
AND grades.`Item Name` = 'SOMEINFO'
) 'SOMENAME',
But i need to add a select where the 'No grade' is, in the following form
( SELECT DISTINCT IFNULL( grades.`grade`,
SELECT IF( EXISTS
( SELECT *
FROM `another_table`
WHERE userid = 365
AND courseid = 2
), 'Enrolled', 'Not enrolled'
)
)
FROM `table` grades
WHERE userinfo.`id` = grades.`id`
AND grades.`Item Name` = 'SOMEINFO'
) 'SOMENAME',
i know that
SELECT IF( EXISTS( SELECT *
FROM `another_table`
WHERE userid = 365
AND courseid = 2
),
'Enrolled', 'Not enrolled'
)
is working too, but now the whole thing it's giving me an error, so any suggestions would be greatly appreciated
Thanks
This looks like a subquery:
(SELECT DISTINCT IFNULL(grades.`grade`,
SELECT IF( EXISTS (SELECT *
FROM `another_table`
WHERE userid = 365 AND courseid = 2
), 'Enrolled', 'Not enrolled'
)
)
FROM `table` grades
WHERE userinfo.`id` = grades.`id` AND
grades.`Item Name` = 'SOMEINFO'
) as SOMENAME,
You are using a subquery that returns two columns in a position where a scalar subquery is expected. A scalar subquery returns one column in at most one row.
Unfortunately, there is no easy way to do what you want in MySQL, because of the restrictions on views. I would advise you to rewrite the logic so the exists is handled using a left join in the from clause.
I am having big issues translating my MSSQL (sql-server) query to Oracle (PL-SQL).
The goal is to do an update and a select on the updated field in one threadsafe operation.
My current MSSQL query:
UPDATE PDFCONVERT_G
SET PDF_STATUS = 1, PDF_STARTDATE = GETDATE(), PDF_CONVERTERNAME='inputConverterName'
OUTPUT Inserted.PDF_ACTION as Action,
Inserted.PDF_ARKMERK_VE As ARKMERK,
Inserted.PDF_TYPE_DL as DlTypeDT,
Inserted.PDF_DOKID_VE as DocId,
Inserted.PDF_DOKMALID_VE as DOKMALID,
Inserted.PDF_FILREF_VE as FILREF,
Inserted.PDF_FILTYPE_LF as Filtype,
Inserted.PDF_JPID_JP as JpId,
Inserted.PDF_LOCFILREF_VE as LOCFILREF,
Inserted.PDF_SAID_SA as SaId,
Inserted.PDF_SJEKKETUT_VE as SJEKKETUT,
Inserted.PDF_TGKODE_VE as TGKODE,
Inserted.PDF_VARIANT_VE as Variant,
Inserted.PDF_VERSJON_VE as Version,
Inserted.PDF_CHECKINAFTERCONVERT as CheckinAfterConvert
FROM PDFCONVERT_G t1
INNER JOIN (
SELECT TOP(1) *
FROM PDFCONVERT_G A WHERE (
(A.PDF_LAGRENH_VE = 'PROD' OR EXISTS(SELECT * FROM PDFCONVERT_G B WHERE A.PDF_JOBID=B.PDF_JOBID AND B.PDF_LAGRENH_VE='PROD' AND B.PDF_ACTION='MERGE'))
AND PDF_STATUS = 0 AND NOT EXISTS(
SELECT * FROM PDFCONVERT_G B where a.pdf_jobid = b.pdf_jobid and b.pdf_status > 0 and a.pdf_action != b.pdf_action))
ORDER BY A.PDF_PRIORITY DESC, A.PDF_JOBID, A.PDF_RNR
) t2 ON t2.PDF_JOBID = t1.PDF_JOBID
I can simply do this query in my .net code and the result will be the Output variables.
I know Oracle has the RETURNING INTO syntax but concidering how complex my WHERE clause is I simply get syntax errors all the time.
I would prefer to write a query without creating a function but even if I have to do that, I am having issues.
SELECT TOP(1) *
FROM PDFCONVERT_G A
WHERE (
( A.PDF_LAGRENH_VE = 'PROD'
OR EXISTS(SELECT *
FROM PDFCONVERT_G B
WHERE A.PDF_JOBID=B.PDF_JOBID
AND B.PDF_LAGRENH_VE='PROD'
AND B.PDF_ACTION='MERGE')
)
AND PDF_STATUS = 0
AND NOT EXISTS(
SELECT *
FROM PDFCONVERT_G B
where a.pdf_jobid = b.pdf_jobid
and b.pdf_status > 0
and a.pdf_action != b.pdf_action
)
)
ORDER BY A.PDF_PRIORITY DESC, A.PDF_JOBID, A.PDF_RNR
Can be rewritten (without the correlated sub-queries) as:
SELECT *
FROM (
SELECT a.*,
ROW_NUMBER() OVER ( ORDER BY PDF_PRIORITY DESC, PDF_JOBID, PDF_RNR ) AS rn
FROM (
SELECT a.*,
COUNT(
CASE WHEN DF_LAGRENH_VE = 'PROD'
AND PDF_ACTION = 'MERGE'
THEN 1 END
) OVER ( PARTITION BY pdf_jobid )
AS num_prod_merge,
COUNT(
CASE WHEN pdf_status > 0 THEN 1 END
) OVER ( PARTITION BY pdf_jobid )
AS num_all_actions,
COUNT(
CASE WHEN pdf_status > 0 THEN 1 END
) OVER ( PARTITION BY pdf_jobid, pdf_action )
AS num_same_actions
FROM PDFCONVERT_G a
) a
WHERE ( PDF_LAGRENH_VE = 'PROD' OR num_prod_merge > 0 )
AND PDF_STATUS = 0
AND num_all_actions = num_same_actions
)
WHERE rn = 1;
You can then rewrite your UPDATE to something like:
UPDATE PDFCONVERT_G
SET PDF_STATUS = 1,
PDF_STARTDATE = SYSDATE,
PDF_CONVERTERNAME='inputConverterName'
WHERE ROWID = (
SELECT ROWID
FROM (
-- as above
)
WHERE rn = 1
)
RETURNING PDF_ACTION -- , ...
INTO :Action -- , ...
(Note: Unable to test this at the moment so there may be some small syntax errors but you should get the general idea.)
I am trying to create an Oracle Sql query using IF/Else statements
IF EXISTS
(
SELECT *
FROM baninst1.an_employee_position
WHERE baninst1.an_employee_position.person_uid = 593791
AND baninst1.an_employee_position.position_end_date IS NULL) THEN
SELECT *
FROM baninst1.an_employee_position
WHERE baninst1.an_employee_position.person_uid = 593791
AND (
baninst1.an_employee_position.position_end_date IS NULL
OR baninst1.an_employee_position.position_end_date > SYSDATE)
AND baninst1.an_employee_position.effective_start_date <= SYSDATE;ELSE
SELECT *
FROM (
SELECT *
FROM baninst1.an_employee_position
WHERE baninst1.an_employee_position.person_uid = 593791 )
WHERE ROWNUM = 1;END IF;
However I receive an "Unknown Command" error when I run it. No more error information
This may provide what you are looking for:
SELECT a.*
FROM employee_position a
where person_uid = 593791
and (
(a.position_end_date is null)
or
(
a.position_end_date =
(select max(position_end_date)
from employee_position b
where b.person_uid = a.person_uid
and b.position_end_date is not null
)
)
)
Another way
SELECT a.*
FROM employee_position a
where person_uid = 593791
and (
nvl(a.position_end_date, trunc(sysdate+100)) >=
(select max(position_end_date)
from employee_position b
where b.person_uid = a.person_uid
and b.position_end_date is not null
)
)