grafbase_sql_ast/ast/
function.rs1mod aggregate_to_string;
2mod average;
3mod coalesce;
4mod concat;
5mod count;
6#[cfg(feature = "postgresql")]
7mod encode;
8#[cfg(feature = "postgresql")]
9mod json_agg;
10#[cfg(feature = "postgresql")]
11mod json_build_object;
12#[cfg(any(feature = "postgresql", feature = "mysql"))]
13mod json_extract;
14#[cfg(any(feature = "postgresql", feature = "mysql"))]
15mod json_extract_array;
16#[cfg(any(feature = "postgresql", feature = "mysql"))]
17mod json_unquote;
18mod lower;
19mod maximum;
20mod minimum;
21mod row_number;
22#[cfg(feature = "postgresql")]
23mod row_to_json;
24mod sum;
25#[cfg(feature = "postgresql")]
26mod to_jsonb;
27mod upper;
28
29pub use aggregate_to_string::*;
30pub use average::*;
31pub use coalesce::*;
32pub use concat::*;
33pub use count::*;
34#[cfg(feature = "postgresql")]
35pub use encode::*;
36#[cfg(feature = "postgresql")]
37pub use json_agg::*;
38#[cfg(feature = "postgresql")]
39pub use json_build_object::*;
40#[cfg(any(feature = "postgresql", feature = "mysql"))]
41pub use json_extract::*;
42#[cfg(any(feature = "postgresql", feature = "mysql"))]
43pub(crate) use json_extract_array::*;
44#[cfg(any(feature = "postgresql", feature = "mysql"))]
45pub use json_unquote::*;
46pub use lower::*;
47pub use maximum::*;
48pub use minimum::*;
49pub use row_number::*;
50#[cfg(feature = "postgresql")]
51pub use row_to_json::*;
52pub use sum::*;
53#[cfg(feature = "postgresql")]
54pub use to_jsonb::*;
55pub use upper::*;
56
57use super::Aliasable;
58use std::borrow::Cow;
59
60#[derive(Debug, Clone, PartialEq)]
62pub struct Function<'a> {
63 pub(crate) typ_: FunctionType<'a>,
64 pub(crate) alias: Option<Cow<'a, str>>,
65}
66
67impl<'a> Function<'a> {
68 pub fn returns_json(&self) -> bool {
69 match self.typ_ {
70 #[cfg(feature = "postgresql")]
71 FunctionType::RowToJson(_) => true,
72 #[cfg(any(feature = "postgresql", feature = "mysql"))]
73 FunctionType::JsonExtract(_) => true,
74 #[cfg(any(feature = "postgresql", feature = "mysql"))]
75 FunctionType::JsonExtractLastArrayElem(_) => true,
76 #[cfg(any(feature = "postgresql", feature = "mysql"))]
77 FunctionType::JsonExtractFirstArrayElem(_) => true,
78 #[cfg(feature = "postgresql")]
79 FunctionType::ToJsonb(_) => true,
80 _ => false,
81 }
82 }
83}
84
85#[derive(Debug, Clone, PartialEq)]
87pub(crate) enum FunctionType<'a> {
88 Count(Count<'a>),
89 AggregateToString(AggregateToString<'a>),
90 Average(Average<'a>),
91 Sum(Sum<'a>),
92 Lower(Lower<'a>),
93 Upper(Upper<'a>),
94 Minimum(Minimum<'a>),
95 Maximum(Maximum<'a>),
96 Coalesce(Coalesce<'a>),
97 Concat(Concat<'a>),
98 #[cfg(any(feature = "postgresql", feature = "mysql"))]
99 JsonExtract(JsonExtract<'a>),
100 #[cfg(any(feature = "postgresql", feature = "mysql"))]
101 JsonExtractLastArrayElem(JsonExtractLastArrayElem<'a>),
102 #[cfg(any(feature = "postgresql", feature = "mysql"))]
103 JsonExtractFirstArrayElem(JsonExtractFirstArrayElem<'a>),
104 #[cfg(any(feature = "postgresql", feature = "mysql"))]
105 JsonUnquote(JsonUnquote<'a>),
106 #[cfg(feature = "postgresql")]
107 RowToJson(RowToJson<'a>),
108 #[cfg(feature = "postgresql")]
109 ToJsonb(ToJsonb<'a>),
110 #[cfg(feature = "postgresql")]
111 JsonAgg(JsonAgg<'a>),
112 #[cfg(feature = "postgresql")]
113 Encode(Encode<'a>),
114 #[cfg(feature = "postgresql")]
115 JsonBuildObject(JsonBuildObject<'a>),
116}
117
118impl<'a> Aliasable<'a> for Function<'a> {
119 type Target = Function<'a>;
120
121 fn alias<T>(mut self, alias: T) -> Self::Target
122 where
123 T: Into<Cow<'a, str>>,
124 {
125 self.alias = Some(alias.into());
126 self
127 }
128}