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fixed bug for issue #1336

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root 2022-10-04 12:21:32 -07:00 committed by Yong Wang
parent 119312091c
commit d8eef2e7f2
1 changed files with 7 additions and 1 deletions
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6
src/Parsers/Kusto/KustoFunctions/KQLStringFunctions.cpp
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@ -534,6 +534,12 @@ bool SubString::convertImpl(String & out,IParser::Pos & pos)
{ {
++pos; ++pos;
auto length = getConvertedArgument(fn_name, pos); auto length = getConvertedArgument(fn_name, pos);
if(startingIndex.empty())
return false;
else if(startingIndex[0] == '-')
out = "substr("+ source + ", " + startingIndex + ", " + length + ")";
else
out = "substr("+ source + ", " + startingIndex + " + 1, " + length + ")"; out = "substr("+ source + ", " + startingIndex + " + 1, " + length + ")";
} }
else else