sql server - How to grab everything before a 3rd occurrence of a character in SQL query -


how can grab data before 3rd '-'? below have sample data:

000700-      - - 8   015111-      - 005 -   019999-      - 005 -   a01- 01200-   0 - 5   a01-012000- - 5   a02-015450- - 5   a02-015450- 003 - 1   d08-020700- - 8   d08-020710- - 5   d08-020710- 013 - 1   d08-020710- 013 - 3

this have done , proper info. because there spaces missing being removed cannot proper comparison data in crystal reports. 

reverse(substring(reverse(a.projectioncode),         charindex('-', re‌​verse(a.projectionco‌​de)) + 1,          len(reverse(a.projectioncode))))) phasecode

this should need , work in event there more or less 3 dashes given row.

-- test data... insert #testdata (somestring) values      ('000700- - - 8'),     ('015111- - 005 -'),     ('019999- - 005 -'),     ('a01- 01200- 0 - 5'),     ('a01-012000- - 5'),     ('a02-015450- - 5'),     ('a02-015450- 003 - 1'),     ('d08-020700- - 8'),     ('d08-020710- - 5'),     ('d08-020710- 013 - 1'),     ('d08-020710- 013 - 3'),     ('1-2-3-4-5-6-7-8-9'),  -- more 3 dashes     ('zaq12wsx-vfr445tgb'), -- lesst 3 dashes     ('987654321345678');    -- no dashes  -- query... select      td.somestring,     left(td.somestring, isnull(d3.dash, len(td.somestring) + 1)- 1)      #testdata td     cross apply ( values (nullif(charindex('-', td.somestring, 1), 0)) ) d1 (dash)     cross apply ( values (nullif(charindex('-', td.somestring, d1.dash + 1), 0)) ) d2 (dash)     cross apply ( values (nullif(charindex('-', td.somestring, d2.dash + 1), 0)) ) d3 (dash);

edit: adding function , usage code...

itvf

create function dbo.tfn_textleftofthirddash /* ============================================================================================= itvf returns text left og 3rd dash in string of text ============================================================================================= */ (     @string varchar(8000) ) returns table schemabinding return     select          stringremain = left(@string, isnull(d3.dash, len(@string) + 1)- 1)              ( values (nullif(charindex('-', @string, 1), 0)) ) d1 (dash)         cross apply ( values (nullif(charindex('-', @string, d1.dash + 1), 0)) ) d2 (dash)         cross apply ( values (nullif(charindex('-', @string, d2.dash + 1), 0)) ) d3 (dash); go

how use function...

select      td.somestring,      l3d.stringremain     #testdata td     cross apply dbo.tfn_textleftofthirddash(td.somestring) l3d;

hth, jason


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