string-aggregation

问题 I have this query : (SELECT OBJECT_ID from cr_object_group_entries_vw where object_group_id IN (SELECT ITEM FROM TABLE(CR_FN_SPLIT_STRING('28,56',',')))) that returns : But when I do : SELECT wm_concat(object_id) FROM (SELECT OBJECT_ID from cr_object_group_entries_vw where object_group_id IN (SELECT ITEM FROM TABLE(CR_FN_SPLIT_STRING('28,56',',')))) I get a blank result... what am I doing wrong? 回答1: You must avoid wm_concat function because it is undocumented and discovered as workaround at

问题 APPLICANT_ID DATE_OF_BIRTH 206209579 04/29/82 206209579 04/29/82 203276426 06/01/69 203276426 02/03/96 203276426 06/02/99 I need result as 206209579 04/29/82,04/29/82 203276426 06/01/69,02/03/96 please suggest its need full 回答1: In Oracle 11g and above, you can use listagg: SELECT applicant_id, LISTAGG(date_of_birth) WITHIN GROUP (ORDER BY date_of_birth) FROM my_table GROUP BY applicant_id 回答2: As an alternative, for Oracle version prior to 11g where LISTAGG is not supported, you could use

问题 I am using SQL Server 2017 and I am trying to create a query that concatenates the languages and Levels of Proficiency in one line for every Employee. The table that stores the info in my SQL Database is this for example: And the end result I would like to achieve is this: Using Stuff function and xml path I have managed to create a select query that shows this: But I can't find a way to insert a break line. The query will be used as a datasource for an AspxGridview. Any help? Thank you in

问题 I try to create a generic function that can be used like this example of using the new string_agg built-in function on SQL Server 2017 the inside implementation can be something like the follow with tbl as( select a.Id, c.Desc from TableA a join TableB b on b.aId = a.Id join TableC c on c.Code = b.bCode ) select distinct ID , STUFF(( select ', ' + Desc from tbl t where t.ID = tbl.ID for xml path(''),TYPE).value('.','VARCHAR(MAX)'),1,2,'') Desc from tbl But how to receives the field key, the

问题 I have a table with data like this: ID, END_DATE, CLOSE_DATE 1, 2018-05-18, 2018-05-15 2, 2018-05-18, 2018-05-14 3, 2018-05-18, 2018-05-11 4, 2018-05-18, 2018-05-10 I need the output when i query in Oracle server END_DATE CLOSE_DATE ID 2018-05-18 [2018-05-15,2018-05-14,2018-05-11,2018-05-10] [1,2,3,4] I have tried to use listagg, but its working either for Id or Close Date but not both. select (listagg(CLOSE_DATE,',') within group (order by CLOSE_DATE DESC)) CLOSE_DATE , END_DATE from TBL_S

问题 I have a table: Contracts: contractid | contract name "1" | "MAG:001" "2" | "MAG:002" -- and -- Devices: devid | serialnum | fk_contractid 10 | 1234 | 1 11 | 5678 | 1 12 | 4321 | 2 13 | 8765 | 2 devices.fk_contractid = contracts.contractid I need to make select which will give result: "MAG:001" | 1234, 5678 "MAG:002" | 4321, 8765 How can that be done in PL-SQL? 回答1: Assuming 11g (when listagg was introduced): select CONTRACT_NAME || '|' || LISTAGG(D.SERIALNUM, ',') within group (order by

问题 SELECT S.enroll_no, Pm.periodname FROM studentattendencedetails AS SA LEFT JOIN studentattendencemaster AS SM ON SA.attendencemasterid = SM.id LEFT JOIN tbl_periodmaster AS Pm ON SA.periodid = Pm.id LEFT JOIN students AS S ON SA.studentid = S.id WHERE SA.isabsent = 2 AND s.enroll_no IN ('YYYYYYYYY','XXXXXXXXXX') ORDER BY S.enroll_no Output: Enroll_No PeriodName ----------------------- YYYYYYYYY 1 YYYYYYYYY 2 XXXXXXXXXX 6 XXXXXXXXXX 1 XXXXXXXXXX 7 I would like to display the period name with

问题 How can I format the output of listagg in Oracle to produce output(every field in the single quote) as 'student1', 'student2', 'student3' . I have gone through documentation and other question on listagg but can't find much. SQL Query to concatenate column values from multiple rows in Oracle SELECT LISTAGG(student_name,',') WITHIN GROUP (ORDER BY student_name) from students Thanks 回答1: You could use: SELECT LISTAGG('''' || student_name || '''',',') WITHIN GROUP (ORDER BY student_name) FROM

问题 I have data TIPE| NILAI PSX 10 GE 10 EG 10 SX 20 SXL 20 SZ 20 how to get output like psx/ge/eg = 10 sx/sxl/sz = 20 and this is my sytax ISNULL(CAST((SELECT CONVERT(VARCHAR,TIPE) + ' / ' FROM tabel FOR XML PATH('')) AS varchar(max)),'') 回答1: Try this DECLARE @tbl table (TIPE varchar(5), NILAI int); insert into @tbl values ('PSX', 10), ('GE', 10), ('EG', 10), ('SX', 20), ('SXL', 20), ('SZ', 20); SELECT DISTINCT STUFF((SELECT '/ '+TIPE FROM @tbl i WHERE i.NILAI=o.NILAI FOR XML PATH ('')),1,1,'')

问题 The title may be misleading because I just can't seem to find the right for it. But here it goes. I have three tables. Students student_id | name 1 Rhon Subjects subject_id | subject_name | student_id 1 Physics 1 2 Math 1 Grades grade_id | student_id | subject_id | grade 1 1 1 90 2 1 2 89 3 1 2 88 I would like to result to be like this: student_id | student_name | subject_name | grades 1 Rhon Physics 90 1 Rhon Math 88,89 My current query is: SELECT students.student_id, subjects.subject_id,