MySQL: Prevent Panic when WHERE clause contains parenthesis. (#531)

* add test that causes panic

* Add fix

* Regen tests

Co-authored-by: Jessica Bellon <10819486+JessTheBell@users.noreply.github.com>

Author: JessBellon

internal/endtoend/testdata/mysql_param/go/query.sql.go

@@ -25,3 +25,9 @@ select first_name, id FROM users LIMIT sqlc.arg(UsersLimit);
 
 /* name: InsertNewUser :exec */
 INSERT INTO users (first_name, last_name) VALUES (?, sqlc.arg(user_last_name));
+
+/* name: ListUserParenExpr :many */
+SELECT * FROM users WHERE (job_status = 'APPLIED' OR job_status = 'PENDING')
+AND id > :lastID
+ORDER BY id
+LIMIT :usersLimit;

internal/endtoend/testdata/mysql_param/query.sql

@@ -110,6 +110,12 @@ func (pGen PackageGenerator) paramsInWhereExpr(e sqlparser.SQLNode, tableAliasMa
 	case *sqlparser.IsExpr:
 		// TODO: see if there is a use case for params in IS expressions
 		return []*Param{}, nil
+	case *sqlparser.ParenExpr:
+		expr, err := pGen.paramsInWhereExpr(v.Expr, tableAliasMap, defaultTable)
+		if err != nil {
+			return nil, err
+		}
+		params = append(params, expr...)
 	default:
 		panic(fmt.Sprintf("Failed to handle %T in where", v))
 	}