Support INSERT IGNORE in MySql and GenericDialect (#1004)

Co-authored-by: Andrew Lamb <[email protected]>

Author: emin100

src/ast/mod.rs

@@ -1296,6 +1296,8 @@ pub enum Statement {
     Insert {
         /// Only for Sqlite
         or: Option<SqliteOnConflict>,
+        /// Only for mysql
+        ignore: bool,
         /// INTO - optional keyword
         into: bool,
         /// TABLE
@@ -2126,6 +2128,7 @@ impl fmt::Display for Statement {
             }
             Statement::Insert {
                 or,
+                ignore,
                 into,
                 table_name,
                 overwrite,
@@ -2142,8 +2145,9 @@ impl fmt::Display for Statement {
                 } else {
                     write!(
                         f,
-                        "INSERT{over}{int}{tbl} {table_name} ",
+                        "INSERT{ignore}{over}{int}{tbl} {table_name} ",
                         table_name = table_name,
+                        ignore = if *ignore { " IGNORE" } else { "" },
                         over = if *overwrite { " OVERWRITE" } else { "" },
                         int = if *into { " INTO" } else { "" },
                         tbl = if *table { " TABLE" } else { "" }

src/parser/mod.rs

@@ -6755,6 +6755,9 @@ impl<'a> Parser<'a> {
             None
         };
 
+        let ignore = dialect_of!(self is MySqlDialect | GenericDialect)
+            && self.parse_keyword(Keyword::IGNORE);
+
         let action = self.parse_one_of_keywords(&[Keyword::INTO, Keyword::OVERWRITE]);
         let into = action == Some(Keyword::INTO);
         let overwrite = action == Some(Keyword::OVERWRITE);
@@ -6852,6 +6855,7 @@ impl<'a> Parser<'a> {
             Ok(Statement::Insert {
                 or,
                 table_name,
+                ignore,
                 into,
                 overwrite,
                 partitioned,

tests/sqlparser_mysql.rs

@@ -972,6 +972,47 @@ fn parse_simple_insert() {
     }
 }
 
+#[test]
+fn parse_ignore_insert() {
+    let sql = r"INSERT IGNORE INTO tasks (title, priority) VALUES ('Test Some Inserts', 1)";
+
+    match mysql_and_generic().verified_stmt(sql) {
+        Statement::Insert {
+            table_name,
+            columns,
+            source,
+            on,
+            ignore,
+            ..
+        } => {
+            assert_eq!(ObjectName(vec![Ident::new("tasks")]), table_name);
+            assert_eq!(vec![Ident::new("title"), Ident::new("priority")], columns);
+            assert!(on.is_none());
+            assert!(ignore);
+            assert_eq!(
+                Box::new(Query {
+                    with: None,
+                    body: Box::new(SetExpr::Values(Values {
+                        explicit_row: false,
+                        rows: vec![vec![
+                            Expr::Value(Value::SingleQuotedString("Test Some Inserts".to_string())),
+                            Expr::Value(number("1"))
+                        ]]
+                    })),
+                    order_by: vec![],
+                    limit: None,
+                    limit_by: vec![],
+                    offset: None,
+                    fetch: None,
+                    locks: vec![]
+                }),
+                source
+            );
+        }
+        _ => unreachable!(),
+    }
+}
+
 #[test]
 fn parse_empty_row_insert() {
     let sql = "INSERT INTO tb () VALUES (), ()";