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Support national string literals (N'...')

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Widely used in MS SQL and specified in ANSI.
This commit is contained in:
Nickolay Ponomarev 2019-02-03 05:49:15 +03:00
parent b9f4b503b6
commit 35dd9342e2
4 changed files with 76 additions and 33 deletions
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11
src/sqlparser.rs
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@ -191,7 +191,9 @@ impl Parser {
},
},
Token::Mult => Ok(ASTNode::SQLWildcard),
Token::Number(_) | Token::SingleQuotedString(_) => {
Token::Number(_)
| Token::SingleQuotedString(_)
| Token::NationalStringLiteral(_) => {
self.prev_token();
self.parse_sql_value()
}
@ -205,7 +207,7 @@ impl Parser {
Ok(expr)
}
_ => parser_err!(format!(
"Prefix parser expected a keyword but found {:?}",
"Did not expect {:?} at the beginning of an expression",
t
)),
},
@ -790,7 +792,10 @@ impl Parser {
Token::SingleQuotedString(ref s) => {
Ok(Value::SingleQuotedString(s.to_string()))
}
_ => parser_err!(format!("Unsupported value: {:?}", self.peek_token())),
Token::NationalStringLiteral(ref s) => {
Ok(Value::NationalStringLiteral(s.to_string()))
}
_ => parser_err!(format!("Unsupported value: {:?}", t)),
}
}
None => parser_err!("Expecting a value, but found EOF"),