chaoyli commented on a change in pull request #3898:
URL: https://github.com/apache/incubator-doris/pull/3898#discussion_r442097496
##########
File path: be/src/olap/utils.cpp
##########
@@ -1264,6 +1265,15 @@ bool valid_datetime(const string &value_str) {
}
}
+bool valid_bool(const std::string& value_str) {
+ if (value_str == "0" || value_str == "1") {
+ return true;
+ }
+ StringParser::ParseResult result;
+ StringParser::string_to_bool(value_str.c_str(), value_str.length(),
&result);
Review comment:
I found string_to_bool will convert "Truetest" to be true, it is ok?
```
543 inline bool StringParser::string_to_bool_internal(const char* s, int
len, ParseResult* result) {
544 *result = PARSE_SUCCESS;
545
546 if (len >= 4 && (s[0] == 't' || s[0] == 'T')) {
547 bool match = (s[1] == 'r' || s[1] == 'R') &&
548 (s[2] == 'u' || s[2] == 'U') &&
549 (s[3] == 'e' || s[3] == 'E');
550 if (match && LIKELY(is_all_whitespace(s + 4, len - 4))) {
551 return true;
552 }
553 } else if (len >= 5 && (s[0] == 'f' || s[0] == 'F')) {
554 bool match = (s[1] == 'a' || s[1] == 'A') &&
555 (s[2] == 'l' || s[2] == 'L') &&
556 (s[3] == 's' || s[3] == 'S') &&
557 (s[4] == 'e' || s[4] == 'E');
558 if (match && LIKELY(is_all_whitespace(s + 5, len - 5))){
559 return false;
560 }
561 }
```
##########
File path: be/src/exprs/cast_functions.cpp
##########
@@ -229,6 +229,17 @@ StringVal
CastFunctions::cast_to_string_val(FunctionContext* ctx, const StringVa
return sv;
}
+BooleanVal CastFunctions::cast_to_boolean_val(FunctionContext* ctx, const
StringVal& val) {
+ if (val.is_null) return BooleanVal::null();
+ StringParser::ParseResult result;
+ BooleanVal ret;
+ ret.val =
StringParser::string_to_bool(reinterpret_cast<char*>(val.ptr), val.len,
&result);
+ if (UNLIKELY(result != StringParser::PARSE_SUCCESS ||
std::isnan(ret.val) || std::isinf(ret.val))) {
+ return BooleanVal::null();
+ }
Review comment:
Brackets is not aligned.
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