planner: resolveFromPlan when tblName.colName exists in having clause

planner/core/logical_plan_builder.go

@@ -1550,8 +1550,22 @@ func (a *havingWindowAndOrderbyExprResolver) Leave(n ast.Node) (node ast.Node, o
 				return node, false
 			}
 			if index == -1 {
-				if a.curClause == orderByClause || a.curClause == havingClause {
+				if a.curClause == orderByClause {
 					index, a.err = a.resolveFromPlan(v, a.p)
+				} else if a.curClause == havingClause && v.Name.Table.L != "" {
+					// For SQLs like:
+					//   select a from t b having b.a;
+					index, a.err = a.resolveFromPlan(v, a.p)
+					if a.err != nil {
+						return node, false
+					}
+					if index != -1 {
+						// For SQLs like:
+						//   select a+1 from t having t.a;
+						newV := v
+						newV.Name = &ast.ColumnName{Name: v.Name.Name}
+						index, a.err = resolveFromSelectFields(newV, a.selectFields, true)
+					}
 				} else {
 					index, a.err = resolveFromSelectFields(v, a.selectFields, true)
 				}

planner/core/logical_plan_test.go

@@ -770,6 +770,22 @@ func (s *testPlanSuite) TestValidate(c *C) {
 			sql: "select concat(c_str, d_str) from t group by `concat(c_str,d_str)`",
 			err: ErrUnknownColumn,
 		},
+		{
+			sql: "select a from t b having b.a",
+			err: nil,
+		},
+		{
+			sql: "select b.a from t b having b.a",
+			err: nil,
+		},
+		{
+			sql: "select b.a from t b having a",
+			err: nil,
+		},
+		{
+			sql: "select a+1 from t having t.a",
+			err: ErrUnknownColumn,
+		},
 	}
 
 	ctx := context.Background()