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Parse LIKE patterns as Expr not Value (#579)

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Andy Grove 2022-08-18 10:02:54 -06:00 • committed by GitHub
parent fc71719719
commit eb7f1b005e
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3 changed files with 73 additions and 28 deletions
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59
tests/sqlparser_common.rs
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@ -862,7 +862,7 @@ fn parse_not_precedence() {
expr: Box::new(Expr::Like {
expr: Box::new(Expr::Value(Value::SingleQuotedString("a".into()))),
negated: true,
pattern: Box::new(Value::SingleQuotedString("b".into())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("b".into()))),
escape_char: None
}),
},
@ -895,7 +895,7 @@ fn parse_like() {
Expr::Like {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: None
},
select.selection.unwrap()
@ -911,7 +911,7 @@ fn parse_like() {
Expr::Like {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: Some('\\')
},
select.selection.unwrap()
@ -928,7 +928,7 @@ fn parse_like() {
Expr::IsNull(Box::new(Expr::Like {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: None
})),
select.selection.unwrap()
@ -938,6 +938,45 @@ fn parse_like() {
chk(true);
}
#[test]
fn parse_null_like() {
let sql = "SELECT \
column1 LIKE NULL AS col_null, \
NULL LIKE column1 AS null_col \
FROM customers";
let select = verified_only_select(sql);
assert_eq!(
SelectItem::ExprWithAlias {
expr: Expr::Like {
expr: Box::new(Expr::Identifier(Ident::new("column1"))),
negated: false,
pattern: Box::new(Expr::Value(Value::Null)),
escape_char: None
},
alias: Ident {
value: "col_null".to_owned(),
quote_style: None
}
},
select.projection[0]
);
assert_eq!(
SelectItem::ExprWithAlias {
expr: Expr::Like {
expr: Box::new(Expr::Value(Value::Null)),
negated: false,
pattern: Box::new(Expr::Identifier(Ident::new("column1"))),
escape_char: None
},
alias: Ident {
value: "null_col".to_owned(),
quote_style: None
}
},
select.projection[1]
);
}
#[test]
fn parse_ilike() {
fn chk(negated: bool) {
@ -950,7 +989,7 @@ fn parse_ilike() {
Expr::ILike {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: None
},
select.selection.unwrap()
@ -966,7 +1005,7 @@ fn parse_ilike() {
Expr::ILike {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: Some('^')
},
select.selection.unwrap()
@ -983,7 +1022,7 @@ fn parse_ilike() {
Expr::IsNull(Box::new(Expr::ILike {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: None
})),
select.selection.unwrap()
@ -1005,7 +1044,7 @@ fn parse_similar_to() {
Expr::SimilarTo {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: None
},
select.selection.unwrap()
@ -1021,7 +1060,7 @@ fn parse_similar_to() {
Expr::SimilarTo {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: Some('\\')
},
select.selection.unwrap()
@ -1037,7 +1076,7 @@ fn parse_similar_to() {
Expr::IsNull(Box::new(Expr::SimilarTo {
expr: Box::new(Expr::Identifier(Ident::new("name"))),
negated,
pattern: Box::new(Value::SingleQuotedString("%a".to_string())),
pattern: Box::new(Expr::Value(Value::SingleQuotedString("%a".to_string()))),
escape_char: Some('\\')
})),
select.selection.unwrap()