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SqlExp: Least, Greatest, SqlDate in MSSQL dialect

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git-svn-id: svn://ultimatepp.org/upp/trunk@7881 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2014-11-10 13:45:45 +00:00
parent 32d34085af
commit e2ddf5871b
1 changed files with 12 additions and 10 deletions
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22
uppsrc/Sql/SqlVal.cpp
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@ -330,17 +330,15 @@ SqlVal Variance(const SqlVal& a) {
}
SqlVal Greatest(const SqlVal& a, const SqlVal& b) {
return SqlFunc(SqlCase
(SQLITE3, "max")
("greatest"),
a, b);
return SqlVal(SqlCase(MSSQL, '(' + ~Case(a < b, b)(a) + ')')
(~SqlFunc(SqlCase(SQLITE3, "max")("greatest"), a, b)),
SqlS::FN);
}
SqlVal Least(const SqlVal& a, const SqlVal& b) {
return SqlFunc(SqlCase
(SQLITE3, "min")
("least"),
a, b);
return SqlVal(SqlCase(MSSQL, '(' + ~Case(a > b, b)(a) + ')')
(~SqlFunc(SqlCase(SQLITE3, "min")("least"), a, b)),
SqlS::FN);
}
SqlVal ConvertCharset(const SqlVal& exp, const SqlVal& charset) { //TODO Dialect!
@ -397,8 +395,12 @@ SqlVal Wild(const char* s) {
return result;
}
SqlVal SqlDate(const SqlVal& year, const SqlVal& month, const SqlVal& day) {//TODO Dialect!
return SqlFunc("to_date", year|"."|month|"."|day, "SYYYY.MM.DD");
SqlVal SqlDate(const SqlVal& year, const SqlVal& month, const SqlVal& day) {
return SqlVal(SqlCase(ORACLE, ~SqlFunc("to_date", year|"."|month|"."|day, "SYYYY.MM.DD")) // Similiar to common, but keep proved version to be sure...
(MSSQL, ~SqlFunc("datefromparts", year, month, day))
("to_date(to_char(" + ~day + ", '00') || to_char(" + ~month +
", '00') || to_char(" + ~year + ",'9999'), 'DDMMYYYY')"),
SqlS::FN);
}
SqlVal AddMonths(const SqlVal& date, const SqlVal& months) {//TODO Dialect!