MySQL: Parse bitwise shift left/right operators

According to the [docs], MySQL supports `<<` and `>>` operators. They
are currently named `PGBitwiseShiftLeft` and `PGBitwiseShiftRight`,
respectively, so the name is a bit misleading, but doesn't see worth
changing at the moment.

[docs]: https://dev.mysql.com/doc/refman/8.4/en/bit-functions.html

Author: mvzink

src/parser/mod.rs

@@ -3485,10 +3485,10 @@ impl<'a> Parser<'a> {
             Token::DuckIntDiv if dialect_is!(dialect is DuckDbDialect | GenericDialect) => {
                 Some(BinaryOperator::DuckIntegerDivide)
             }
-            Token::ShiftLeft if dialect_is!(dialect is PostgreSqlDialect | DuckDbDialect | GenericDialect | RedshiftSqlDialect) => {
+            Token::ShiftLeft if dialect_is!(dialect is PostgreSqlDialect | DuckDbDialect | GenericDialect | RedshiftSqlDialect | MySqlDialect) => {
                 Some(BinaryOperator::PGBitwiseShiftLeft)
             }
-            Token::ShiftRight if dialect_is!(dialect is PostgreSqlDialect | DuckDbDialect | GenericDialect | RedshiftSqlDialect) => {
+            Token::ShiftRight if dialect_is!(dialect is PostgreSqlDialect | DuckDbDialect | GenericDialect | RedshiftSqlDialect | MySqlDialect) => {
                 Some(BinaryOperator::PGBitwiseShiftRight)
             }
             Token::Sharp if dialect_is!(dialect is PostgreSqlDialect | RedshiftSqlDialect) => {

tests/sqlparser_mysql.rs

@@ -3765,6 +3765,28 @@ fn parse_logical_xor() {
     );
 }
 
+#[test]
+fn parse_bitwise_shift_ops() {
+    let sql = "SELECT 1 << 2, 8 >> 3";
+    let select = mysql().verified_only_select(sql);
+    assert_eq!(
+        SelectItem::UnnamedExpr(Expr::BinaryOp {
+            left: Box::new(Expr::Value((number("1")).with_empty_span())),
+            op: BinaryOperator::PGBitwiseShiftLeft,
+            right: Box::new(Expr::Value((number("2")).with_empty_span())),
+        }),
+        select.projection[0]
+    );
+    assert_eq!(
+        SelectItem::UnnamedExpr(Expr::BinaryOp {
+            left: Box::new(Expr::Value((number("8")).with_empty_span())),
+            op: BinaryOperator::PGBitwiseShiftRight,
+            right: Box::new(Expr::Value((number("3")).with_empty_span())),
+        }),
+        select.projection[1]
+    );
+}
+
 #[test]
 fn parse_bitstring_literal() {
     let select = mysql_and_generic().verified_only_select("SELECT B'111'");