plan: refactor the code of building Insert.

executor/errors.go

@@ -39,7 +39,6 @@ var (
 
 	ErrPasswordNoMatch             = terror.ClassExecutor.New(mysql.ErrPasswordNoMatch, mysql.MySQLErrName[mysql.ErrPasswordNoMatch])
 	ErrCannotUser                  = terror.ClassExecutor.New(mysql.ErrCannotUser, mysql.MySQLErrName[mysql.ErrCannotUser])
-	ErrWrongValueCountOnRow        = terror.ClassExecutor.New(mysql.ErrWrongValueCountOnRow, mysql.MySQLErrName[mysql.ErrWrongValueCountOnRow])
 	ErrPasswordFormat              = terror.ClassExecutor.New(mysql.ErrPasswordFormat, mysql.MySQLErrName[mysql.ErrPasswordFormat])
 	ErrCantChangeTxCharacteristics = terror.ClassExecutor.New(mysql.ErrCantChangeTxCharacteristics, mysql.MySQLErrName[mysql.ErrCantChangeTxCharacteristics])
 )

executor/executor_test.go

@@ -1312,7 +1312,7 @@ func (s *testSuite) TestMultiUpdate(c *C) {
 func (s *testSuite) TestGeneratedColumnWrite(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	tk.MustExec("use test")
-	tk.MustExec(`CREATE TABLE test_gc_write (a int primary key, b int, c int as (a+8) virtual)`)
+	tk.MustExec(`CREATE TABLE test_gc_write (a int primary key auto_increment, b int, c int as (a+8) virtual)`)
 	tk.MustExec(`CREATE TABLE test_gc_write_1 (a int primary key, b int, c int)`)
 
 	tests := []struct {
@@ -1336,20 +1336,23 @@ func (s *testSuite) TestGeneratedColumnWrite(c *C) {
 		// Can insert without generated columns.
 		{`insert into test_gc_write (a, b) values (1, 1)`, 0},
 		{`insert into test_gc_write set a = 2, b = 2`, 0},
+		{`insert into test_gc_write (b) select c from test_gc_write`, 0},
 		// Can update without generated columns.
 		{`update test_gc_write set b = 2 where a = 2`, 0},
 		{`update test_gc_write t1, test_gc_write_1 t2 set t1.b = 3, t2.b = 4`, 0},
 
 		// But now we can't do this, just as same with MySQL 5.7:
 		{`insert into test_gc_write values (1, 1)`, mysql.ErrWrongValueCountOnRow},
 		{`insert into test_gc_write select 1, 1`, mysql.ErrWrongValueCountOnRow},
+		{`insert into test_gc_write (c) select a, b from test_gc_write`, mysql.ErrWrongValueCountOnRow},
+		{`insert into test_gc_write (b, c) select a, b from test_gc_write`, mysql.ErrBadGeneratedColumn},
 	}
 	for _, tt := range tests {
 		_, err := tk.Exec(tt.stmt)
 		if tt.err != 0 {
-			c.Assert(err, NotNil)
+			c.Assert(err, NotNil, Commentf("sql is `%v`", tt.stmt))
 			terr := errors.Trace(err).(*errors.Err).Cause().(*terror.Error)
-			c.Assert(terr.Code(), Equals, terror.ErrCode(tt.err))
+			c.Assert(terr.Code(), Equals, terror.ErrCode(tt.err), Commentf("sql is %v", tt.stmt))
 		} else {
 			c.Assert(err, IsNil)
 		}

executor/insert_common.go

@@ -148,47 +148,14 @@ func (e *InsertValues) fillValueList() error {
 	return nil
 }
 
-func (e *InsertValues) checkValueCount(insertValueCount, valueCount, genColsCount, num int, cols []*table.Column) error {
-	// TODO: This check should be done in plan builder.
-	if insertValueCount != valueCount {
-		// "insert into t values (), ()" is valid.
-		// "insert into t values (), (1)" is not valid.
-		// "insert into t values (1), ()" is not valid.
-		// "insert into t values (1,2), (1)" is not valid.
-		// So the value count must be same for all insert list.
-		return ErrWrongValueCountOnRow.GenByArgs(num + 1)
-	}
-	if valueCount == 0 && len(e.Columns) > 0 {
-		// "insert into t (c1) values ()" is not valid.
-		return ErrWrongValueCountOnRow.GenByArgs(num + 1)
-	} else if valueCount > 0 {
-		explicitSetLen := 0
-		if len(e.Columns) != 0 {
-			explicitSetLen = len(e.Columns)
-		} else {
-			explicitSetLen = len(e.SetList)
-		}
-		if explicitSetLen > 0 && valueCount+genColsCount != len(cols) {
-			return ErrWrongValueCountOnRow.GenByArgs(num + 1)
-		} else if explicitSetLen == 0 && valueCount != len(cols) {
-			return ErrWrongValueCountOnRow.GenByArgs(num + 1)
-		}
-	}
-	return nil
-}
-
 func (e *InsertValues) insertRows(cols []*table.Column, exec func(rows []types.DatumRow) error) (err error) {
 	// process `insert|replace ... set x=y...`
 	if err = e.fillValueList(); err != nil {
 		return errors.Trace(err)
 	}
 
 	rows := make([]types.DatumRow, len(e.Lists))
-	length := len(e.Lists[0])
 	for i, list := range e.Lists {
-		if err = e.checkValueCount(length, len(list), len(e.GenColumns), i, cols); err != nil {
-			return errors.Trace(err)
-		}
 		e.rowCount = uint64(i)
 		rows[i], err = e.getRow(cols, list, i)
 		if err != nil {
@@ -277,9 +244,6 @@ func (e *InsertValues) fillDefaultValues(row types.DatumRow, hasValue []bool) er
 func (e *InsertValues) insertRowsFromSelect(ctx context.Context, cols []*table.Column, exec func(rows []types.DatumRow) error) error {
 	// process `insert|replace into ... select ... from ...`
 	selectExec := e.children[0]
-	if selectExec.Schema().Len() != len(cols) {
-		return ErrWrongValueCountOnRow.GenByArgs(1)
-	}
 	fields := selectExec.retTypes()
 	chk := selectExec.newChunk()
 	iter := chunk.NewIterator4Chunk(chk)

executor/write_test.go

@@ -100,6 +100,12 @@ func (s *testSuite) TestInsert(c *C) {
 	c.Assert(err, NotNil)
 	tk.MustExec("rollback")
 
+	errInsertSelectSQL = `insert insert_test_1 values(default, default, default, default, default)`
+	tk.MustExec("begin")
+	_, err = tk.Exec(errInsertSelectSQL)
+	c.Assert(err, NotNil)
+	tk.MustExec("rollback")
+
 	// Updating column is PK handle.
 	// Make sure the record is "1, 1, nil, 1".
 	r := tk.MustQuery("select * from insert_test where id = 1;")
@@ -240,6 +246,21 @@ func (s *testSuite) TestInsert(c *C) {
 		Check(testkit.Rows("Warning 1690 constant -1.1 overflows float", "Warning 1690 constant -1.1 overflows double",
 			"Warning 1690 constant -2.1 overflows float", "Warning 1690 constant -2.1 overflows double"))
 	tk.MustQuery("select * from t").Check(testkit.Rows("0 0", "0 0", "0 0", "1.1 1.1"))
+
+	// issue 7061
+	tk.MustExec("drop table if exists t")
+	tk.MustExec("create table t(a int default 1, b int default 2)")
+	tk.MustExec("insert into t values(default, default)")
+	tk.MustQuery("select * from t").Check(testkit.Rows("1 2"))
+	tk.MustExec("truncate table t")
+	tk.MustExec("insert into t values(default(b), default(a))")
+	tk.MustQuery("select * from t").Check(testkit.Rows("2 1"))
+	tk.MustExec("truncate table t")
+	tk.MustExec("insert into t (b) values(default)")
+	tk.MustQuery("select * from t").Check(testkit.Rows("1 2"))
+	tk.MustExec("truncate table t")
+	tk.MustExec("insert into t (b) values(default(a))")
+	tk.MustQuery("select * from t").Check(testkit.Rows("1 1"))
 }
 
 func (s *testSuite) TestInsertAutoInc(c *C) {

plan/errors.go

@@ -48,6 +48,7 @@ const (
 	codeMixOfGroupFuncAndFields      = mysql.ErrMixOfGroupFuncAndFields
 	codeNonUniqTable                 = mysql.ErrNonuniqTable
 	codeWrongNumberOfColumnsInSelect = mysql.ErrWrongNumberOfColumnsInSelect
+	codeWrongValueCountOnRow         = mysql.ErrWrongValueCountOnRow
 )
 
 // error definitions.
@@ -81,6 +82,7 @@ var (
 	ErrInternal                     = terror.ClassOptimizer.New(codeInternal, mysql.MySQLErrName[mysql.ErrInternal])
 	ErrMixOfGroupFuncAndFields      = terror.ClassOptimizer.New(codeMixOfGroupFuncAndFields, "In aggregated query without GROUP BY, expression #%d of SELECT list contains nonaggregated column '%s'; this is incompatible with sql_mode=only_full_group_by")
 	ErrNonUniqTable                 = terror.ClassOptimizer.New(codeNonUniqTable, mysql.MySQLErrName[mysql.ErrNonuniqTable])
+	ErrWrongValueCountOnRow         = terror.ClassOptimizer.New(mysql.ErrWrongValueCountOnRow, mysql.MySQLErrName[mysql.ErrWrongValueCountOnRow])
 )
 
 func init() {
@@ -107,6 +109,7 @@ func init() {
 		codeMixOfGroupFuncAndFields:      mysql.ErrMixOfGroupFuncAndFields,
 		codeNonUniqTable:                 mysql.ErrNonuniqTable,
 		codeWrongNumberOfColumnsInSelect: mysql.ErrWrongNumberOfColumnsInSelect,
+		codeWrongValueCountOnRow:         mysql.ErrWrongValueCountOnRow,
 	}
 	terror.ErrClassToMySQLCodes[terror.ClassOptimizer] = mysqlErrCodeMap
 }

plan/logical_plan_test.go

@@ -1332,7 +1332,7 @@ func (s *testPlanSuite) TestVisitInfo(c *C) {
 		ans []visitInfo
 	}{
 		{
-			sql: "insert into t values (1)",
+			sql: "insert into t (a) values (1)",
 			ans: []visitInfo{
 				{mysql.InsertPriv, "test", "t", ""},
 			},

plan/physical_plan_test.go

@@ -620,7 +620,7 @@ func (s *testPlanSuite) TestDAGPlanBuilderBasePhysicalPlan(c *C) {
 		},
 		// Test simple insert.
 		{
-			sql:  "insert into t values(0,0,0,0,0,0,0)",
+			sql:  "insert into t (a, b, c, e, f, g) values(0,0,0,0,0,0)",
 			best: "Insert",
 		},
 		// Test dual.