0.3.6

Timestamp Casting

Author: KyGost

Diff for: Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 	name = "multisql"
-	version = "0.3.5"
+	version = "0.3.6"
 	authors = ["Kyran Gostelow <kyran@gostelow.me>", "Taehoon Moon <taehoon.moon@outlook.com>"]
 	edition = "2021"
 	description = "MultiSQL"

Diff for: src/data/value/cast.rs

@@ -246,6 +246,10 @@ impl CastWithRules<NaiveDateTime> for Value {
 		const TRY_RULES_TIME: [i64; 2] = [100, 101];
 
 		match rule {
+			Value::Null => try_rules(&self, &TRY_RULES_TIMESTAMP)
+				.or_else(|_| try_rules(&self, &TRY_RULES_DATETIME))
+				.or_else(|_| try_rules(&self, &TRY_RULES_DATE))
+				.or_else(|_| try_rules(&self, &TRY_RULES_TIME)),
 			Value::Bool(true) => try_rules(&self, &TRY_RULES_TIMESTAMP),
 			Value::Str(custom) => match custom.as_str() {
 				"TIMESTAMP" => try_rules(&self, &TRY_RULES_TIMESTAMP),

Diff for: src/data/value/value_type/cast.rs

@@ -1,5 +1,6 @@
 use {
-	crate::{Cast, Result, Value, ValueError, ValueType},
+	crate::{Cast, CastWithRules, Result, Value, ValueError, ValueType},
+	chrono::NaiveDateTime,
 	std::string::ToString,
 };
 
@@ -17,6 +18,11 @@ impl Value {
 			(ValueType::I64, value) => value.clone().cast().map(Value::I64),
 			(ValueType::F64, value) => value.clone().cast().map(Value::F64),
 			(ValueType::Str, value) => value.clone().cast().map(Value::Str),
+			(ValueType::Timestamp, value) => {
+				let datetime: NaiveDateTime = value.clone().cast_with_rule(Value::Null)?;
+				let timestamp = datetime.timestamp();
+				Ok(Value::Timestamp(timestamp))
+			}
 
 			_ => Err(ValueError::UnimplementedCast.into()),
 		}

Diff for: tests/functionality/query/function/convert_timestamp.rs

@@ -17,12 +17,18 @@ crate::util_macros::testcase!(
 			"VALUES (CONVERT('TIMESTAMP', '2001-02-03', 'DATE'))" => unnamed_0 = I64:
 			(981158400)
 		);
-		crate::util_macros::assert_error!(glue, "VALUES (CONVERT('TIMESTAMP', '2001-02-03', 'DATETIME'))");
+		crate::util_macros::assert_error!(
+			glue,
+			"VALUES (CONVERT('TIMESTAMP', '2001-02-03', 'DATETIME'))"
+		);
 		crate::util_macros::assert_select!(glue,
 			"VALUES (CONVERT('TIMESTAMP', '2001-02-03 04:05', 'DATETIME'))" => unnamed_0 = I64:
 			(981173100)
 		);
-		crate::util_macros::assert_error!(glue, "VALUES (CONVERT('TIMESTAMP', '2001-02-03', 'TIME'))");
+		crate::util_macros::assert_error!(
+			glue,
+			"VALUES (CONVERT('TIMESTAMP', '2001-02-03', 'TIME'))"
+		);
 		crate::util_macros::assert_select!(glue,
 			"VALUES (CONVERT('TIMESTAMP', '04:05', 'TIME'))" => unnamed_0 = I64:
 			(14700)
@@ -45,7 +51,10 @@ crate::util_macros::testcase!(
 			"VALUES (CONVERT('TIMESTAMP', '13/02/2001', 'DATE'))" => unnamed_0 = I64:
 			(982022400)
 		);
-		crate::util_macros::assert_error!(glue, "VALUES (CONVERT('TIMESTAMP', '02/13/2001', 'DATE'))");
+		crate::util_macros::assert_error!(
+			glue,
+			"VALUES (CONVERT('TIMESTAMP', '02/13/2001', 'DATE'))"
+		);
 		crate::util_macros::assert_select!(glue,
 			"VALUES (CONVERT('TIMESTAMP', '03-Feb-2001', 'DATE'))" => unnamed_0 = I64:
 			(981158400)
@@ -76,5 +85,9 @@ crate::util_macros::testcase!(
 			"VALUES (CONVERT('TIMESTAMP', '03/02/2001 04:05', 60))" => unnamed_0 = I64:
 			(981173100)
 		);
+		crate::util_macros::assert_select!(glue,
+			"VALUES (CAST('03/02/2001 04:05' AS TIMESTAMP))" => unnamed_0 = Timestamp:
+			(981173100)
+		);
 	})
 );