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Home » U++ Library support » U++ SQL » Convert String to SqlId
Convert String to SqlId [message #19619] |
Tue, 23 December 2008 16:22  |
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michael
Messages: 153 Registered: May 2007 Location: Germany
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Experienced Member |
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I'm using the following code to query my database:
SqlId count("COUNT(*)");
sql * Select(count).From(sqlTable).Where(PRODUKT=="prohibis");
sqlTable is a String. How do i use these String as a SqlId? I get the following errors when compiling:
G:\Entwicklung\UPP\prohibisZA\prohibisZA.cpp(1048) : error C2679: binary '=' : no operator found which takes a right-hand operand of type
'Upp::SqlVal' (or there is no acceptable conversion)
C:\upp\uppsrc\Core/String.h(297): could be 'Upp::String &Upp::String::operator =(const char *)'
C:\upp\uppsrc\Core/String.h(298): or 'Upp::String &Upp::String::operator =(const Upp::String &)'
C:\upp\uppsrc\Core/String.h(299): or 'Upp::String &Upp::String::operator =(Upp::StringBuffer &)'
while trying to match the argument list '(Upp::String, Upp::SqlVal)'
G:\Entwicklung\UPP\prohibisZA\prohibisZA.cpp(1052) : error C2668: 'Upp::SqlSelect::From' : ambiguous call to overloaded function
c:\upp\uppsrc\sql\Sqlexp.h(454): could be 'Upp::SqlSelect &Upp::SqlSelect::From(const Upp::SqlVal &)'
c:\upp\uppsrc\sql\Sqlexp.h(451): or 'Upp::SqlSelect &Upp::SqlSelect::From(Upp::SqlId)'
while trying to match the argument list '(Upp::String)'
G:\Entwicklung\UPP\prohibisZA\prohibisZA.cpp(1052) : error C2228: left of '.Where' must have class/struct/union
prohibisZA: 1 file(s) built in (0:02.01), 2016 msecs / file, duration = 2047 msecs, parallelization 0%
I get no errors when i replace the String sqlTable with the SqlId KUNDEN which i defined in the schema-file:
sql * Select(count).From(KUNDEN).Where(PRODUKT=="prohibis");
How can i convert my String sqlTable into a SqlId?
[Updated on: Tue, 23 December 2008 16:52] Report message to a moderator
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Re: Convert String to SqlId [message #19621 is a reply to message #19619] |
Tue, 23 December 2008 19:12   |
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michael
Messages: 153 Registered: May 2007 Location: Germany
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Experienced Member |
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ok, that's a replacement for my count-method, but the main-problem is how to use a String (sqlTable) as SqlId:
Sql sql(session);
SqlId all("*");
sql * Select(SqlCountRows()).From(sqlTable).Where(PRODUKT=="prohibis");
H:\Entwicklung\UPP\prohibisZA\prohibisZA.cpp(1049) : error C2668: 'Upp::SqlSelect::From' : ambiguous call to overloaded function
c:\upp\uppsrc\sql\Sqlexp.h(454): could be 'Upp::SqlSelect &Upp::SqlSelect::From(const Upp::SqlVal &)'
c:\upp\uppsrc\sql\Sqlexp.h(451): or 'Upp::SqlSelect &Upp::SqlSelect::From(Upp::SqlId)'
while trying to match the argument list '(Upp::String)'
H:\Entwicklung\UPP\prohibisZA\prohibisZA.cpp(1049) : error C2228: left of '.Where' must have class/struct/union
prohibisZA: 1 file(s) built in (0:03.63), 3635 msecs / file, duration = 3697 msecs, parallelization 0%
There were errors. (0:04.68)
[Updated on: Tue, 23 December 2008 19:17] Report message to a moderator
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