checker.orm: check if update expr is invalid ident

vlib/orm/orm_null_test.v

@@ -227,10 +227,10 @@ struct Bar {
 	age  int
 }
 
-fn update_bar1(db MockDB, id u64, name ?string) ! {
+fn update_bar1(db MockDB, id u64, name_ ?string) ! {
 	foo := 66
 	sql db {
-		update Bar set name = name, age = age + 3 + foo where id == id
+		update Bar set name = name_, age = age + 3 + foo where id == id
 	}!
 }
 

vlib/v/checker/orm.v

@@ -338,6 +338,13 @@ fn (mut c Checker) sql_stmt_line(mut node ast.SqlStmtLine) ast.Type {
 				field := node.fields.filter(it.name == column)[0]
 				c.expected_type = field.typ
 			}
+			if mut expr is ast.Ident {
+				for field in fields {
+					if expr.name == field.name {
+						c.error('unknown V identifier `${field.name}`', expr.pos)
+					}
+				}
+			}
 			c.expr(mut expr)
 		}
 	}

vlib/v/checker/tests/orm_update_right_type_ident_err.out

@@ -0,0 +1,7 @@
+vlib/v/checker/tests/orm_update_right_type_ident_err.vv:16:38: error: unknown V identifier `seo_f1`
+   14 | 
+   15 |     sql db {
+   16 |         update SeoBlock set seo_f1 = seo_f1 where seo_f1 == ""
+      |                                      ~~~~~~
+   17 |     } or { panic(err) }
+   18 | }

vlib/v/checker/tests/orm_update_right_type_ident_err.vv

@@ -0,0 +1,18 @@
+module main
+
+import db.sqlite
+
+pub struct SeoBlock {
+    pub:
+    seo_f1 string
+    seo_is_f1_capitalize bool
+    seo_params string
+}
+
+fn main() {
+	db := sqlite.connect('test.db') or { panic(err) }
+
+    sql db {
+        update SeoBlock set seo_f1 = seo_f1 where seo_f1 == ""
+    } or { panic(err) }
+}