fix: data append error

+package astexpr
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type AST struct {
+	Tokens []*Token
+
+	source    string
+	currTok   *Token
+	currIndex int
+	depth     int
+
+	Err error
+}
+
+func NewAST(toks []*Token, s string) *AST {
+	a := &AST{
+		Tokens: toks,
+		source: s,
+	}
+	if a.Tokens == nil || len(a.Tokens) == 0 {
+		a.Err = errors.New("empty token")
+	} else {
+		a.currIndex = 0
+		a.currTok = a.Tokens[0]
+	}
+	return a
+}
+
+// ParseExpression 解析表达式
+func (a *AST) ParseExpression() ExprAST {
+	a.depth++ // called depth
+	lhs := a.parsePrimary()
+	r := a.parseBinOpRHS(0, lhs)
+	a.depth--
+	if a.depth == 0 && a.currIndex != len(a.Tokens) && a.Err == nil {
+		a.Err = errors.New(
+			fmt.Sprintf("bad expression, reaching the end or missing the operator\n%s",
+				ErrPos(a.source, a.currTok.Offset)))
+	}
+	return r
+}
+
+func (a *AST) getNextToken() *Token {
+	a.currIndex++
+	if a.currIndex < len(a.Tokens) {
+		a.currTok = a.Tokens[a.currIndex]
+		return a.currTok
+	}
+	return nil
+}
+
+func (a *AST) getTokPrecedence() int {
+	if p, ok := precedence[a.currTok.Tok]; ok {
+		return p
+	}
+	return -1
+}
+
+func (a *AST) parseNumber() NumberExprAST {
+	f64, err := strconv.ParseFloat(a.currTok.Tok, 64)
+	if err != nil {
+		a.Err = errors.New(
+			fmt.Sprintf("%v\nwant '(' or '0-9' but get '%s'\n%s",
+				err.Error(),
+				a.currTok.Tok,
+				ErrPos(a.source, a.currTok.Offset)))
+		return NumberExprAST{}
+	}
+	n := NumberExprAST{
+		Val: f64,
+		Str: a.currTok.Tok,
+	}
+	a.getNextToken()
+	return n
+}
+
+func (a *AST) parseFunCallerOrConst() ExprAST {
+	name := a.currTok.Tok
+	a.getNextToken()
+	// call func
+	if a.currTok.Tok == "(" {
+		f := FunCallerExprAST{}
+		if _, ok := defFunc[name]; !ok {
+			a.Err = errors.New(
+				fmt.Sprintf("function `%s` is undefined\n%s",
+					name,
+					ErrPos(a.source, a.currTok.Offset)))
+			return f
+		}
+		a.getNextToken()
+		exprs := make([]ExprAST, 0)
+		if a.currTok.Tok == ")" {
+			// function call without parameters
+			// ignore the process of parameter resolution
+		} else {
+			exprs = append(exprs, a.ParseExpression())
+			for a.currTok.Tok != ")" && a.getNextToken() != nil {
+				if a.currTok.Type == COMMA {
+					continue
+				}
+				exprs = append(exprs, a.ParseExpression())
+			}
+		}
+		def := defFunc[name]
+		if def.argc >= 0 && len(exprs) != def.argc {
+			a.Err = errors.New(
+				fmt.Sprintf("wrong way calling function `%s`, parameters want %d but get %d\n%s",
+					name,
+					def.argc,
+					len(exprs),
+					ErrPos(a.source, a.currTok.Offset)))
+		}
+		a.getNextToken()
+		f.Name = name
+		f.Args = exprs
+		return f
+	}
+	// call const
+	if v, ok := defConst[name]; ok {
+		return NumberExprAST{
+			Val: v,
+			Str: strconv.FormatFloat(v, 'f', 0, 64),
+		}
+	} else {
+		if strings.Contains(name, ".") {
+			return FieldExprAST{
+				Str: name,
+			}
+		}
+		a.Err = errors.New(
+			fmt.Sprintf("const `%s` is undefined\n%s",
+				name,
+				ErrPos(a.source, a.currTok.Offset)))
+		return NumberExprAST{}
+	}
+}
+
+func (a *AST) parsePrimary() ExprAST {
+	switch a.currTok.Type {
+	case Identifier:
+		return a.parseFunCallerOrConst()
+	case Literal:
+		return a.parseNumber()
+	case StringArgs:
+		e := ValueExprAST{
+			Str: a.currTok.Tok,
+		}
+		a.getNextToken()
+		return e
+	case Operator:
+		if a.currTok.Tok == "(" {
+			t := a.getNextToken()
+			if t == nil {
+				a.Err = errors.New(
+					fmt.Sprintf("want '(' or '0-9' but get EOF\n%s",
+						ErrPos(a.source, a.currTok.Offset)))
+				return nil
+			}
+			e := a.ParseExpression()
+			if e == nil {
+				return nil
+			}
+			if a.currTok.Tok != ")" {
+				a.Err = errors.New(
+					fmt.Sprintf("want ')' but get %s\n%s",
+						a.currTok.Tok,
+						ErrPos(a.source, a.currTok.Offset)))
+				return nil
+			}
+			a.getNextToken()
+			return e
+		} else if a.currTok.Tok == "-" {
+			if a.getNextToken() == nil {
+				a.Err = errors.New(
+					fmt.Sprintf("want '0-9' but get '-'\n%s",
+						ErrPos(a.source, a.currTok.Offset)))
+				return nil
+			}
+			bin := BinaryExprAST{
+				Op:  "-",
+				Lhs: NumberExprAST{},
+				Rhs: a.parsePrimary(),
+			}
+			return bin
+		} else {
+			return a.parseNumber()
+		}
+	case COMMA:
+		a.Err = errors.New(
+			fmt.Sprintf("want '(' or '0-9' but get %s\n%s",
+				a.currTok.Tok,
+				ErrPos(a.source, a.currTok.Offset)))
+		return nil
+	default:
+		return nil
+	}
+}
+
+func (a *AST) parseBinOpRHS(execPrec int, lhs ExprAST) ExprAST {
+	for {
+		tokPrec := a.getTokPrecedence()
+		if tokPrec < execPrec {
+			return lhs
+		}
+		binOp := a.currTok.Tok
+		if a.getNextToken() == nil {
+			a.Err = errors.New(
+				fmt.Sprintf("want '(' or '0-9' but get EOF\n%s",
+					ErrPos(a.source, a.currTok.Offset)))
+			return nil
+		}
+		rhs := a.parsePrimary()
+		if rhs == nil {
+			return nil
+		}
+		nextPrec := a.getTokPrecedence()
+		if tokPrec < nextPrec {
+			rhs = a.parseBinOpRHS(tokPrec+1, rhs)
+			if rhs == nil {
+				return nil
+			}
+		}
+		lhs = BinaryExprAST{
+			Op:  binOp,
+			Lhs: lhs,
+			Rhs: rhs,
+		}
+	}
+}

+package astexpr
+
+import (
+	"errors"
+	"math"
+)
+
+const (
+	RadianMode = iota
+	AngleMode
+)
+
+type defS struct {
+	argc int
+	fun  func(expr ...ExprAST) float64
+}
+
+// TrigonometricMode enum "RadianMode", "AngleMode"
+var TrigonometricMode = RadianMode
+
+var defConst = map[string]float64{
+	"pi": math.Pi,
+}
+
+var defFunc map[string]defS
+
+func init() {
+	defFunc = map[string]defS{
+		"sin": {1, defSin},
+		"cos": {1, defCos},
+		"tan": {1, defTan},
+		"cot": {1, defCot},
+		"sec": {1, defSec},
+		"csc": {1, defCsc},
+
+		"abs":   {1, defAbs},
+		"ceil":  {1, defCeil},
+		"floor": {1, defFloor},
+		"round": {1, defRound},
+		"sqrt":  {1, defSqrt},
+		"cbrt":  {1, defCbrt},
+
+		"noerr": {1, defNoErr},
+
+		"max": {-1, defMax},
+		"min": {-1, defMin},
+
+		// excel support
+		"sum":   {-1, defNone},
+		"if":    {-1, defNone},
+		"sumif": {-1, defNone},
+		"and":   {-1, defNone},
+		"or":    {-1, defNone},
+		"month": {-1, defNone},
+		"year":  {-1, defNone},
+		//"round":    {-1, defNone},
+		"rounddown": {-1, defNone},
+		"roundup":   {-1, defNone},
+		"count":     {-1, defNone},
+		"countif":   {-1, defNone},
+		//"&":         {-1, defNone},
+		"concat": {-1, defNone},
+	}
+}
+
+// sin(pi/2) = 1
+func defSin(expr ...ExprAST) float64 {
+	return math.Sin(expr2Radian(expr[0]))
+}
+
+// cos(0) = 1
+func defCos(expr ...ExprAST) float64 {
+	return math.Cos(expr2Radian(expr[0]))
+}
+
+// tan(pi/4) = 1
+func defTan(expr ...ExprAST) float64 {
+	return math.Tan(expr2Radian(expr[0]))
+}
+
+// cot(pi/4) = 1
+func defCot(expr ...ExprAST) float64 {
+	return 1 / defTan(expr...)
+}
+
+// sec(0) = 1
+func defSec(expr ...ExprAST) float64 {
+	return 1 / defCos(expr...)
+}
+
+// csc(pi/2) = 1
+func defCsc(expr ...ExprAST) float64 {
+	return 1 / defSin(expr...)
+}
+
+// abs(-2) = 2
+func defAbs(expr ...ExprAST) float64 {
+	return math.Abs(ExprASTResult(expr[0]))
+}
+
+// ceil(4.2) = ceil(4.8) = 5
+func defCeil(expr ...ExprAST) float64 {
+	return math.Ceil(ExprASTResult(expr[0]))
+}
+
+// floor(4.2) = floor(4.8) = 4
+func defFloor(expr ...ExprAST) float64 {
+	return math.Floor(ExprASTResult(expr[0]))
+}
+
+// round(4.2) = 4
+// round(4.6) = 5
+func defRound(expr ...ExprAST) float64 {
+	return math.Round(ExprASTResult(expr[0]))
+}
+
+// sqrt(4) = 2
+// sqrt(4) = abs(sqrt(4))
+// returns only the absolute value of the result
+func defSqrt(expr ...ExprAST) float64 {
+	return math.Sqrt(ExprASTResult(expr[0]))
+}
+
+// cbrt(27) = 3
+func defCbrt(expr ...ExprAST) float64 {
+	return math.Cbrt(ExprASTResult(expr[0]))
+}
+
+// max(2) = 2
+// max(2, 3) = 3
+// max(2, 3, 1) = 3
+func defMax(expr ...ExprAST) float64 {
+	if len(expr) == 0 {
+		panic(errors.New("calling function `max` must have at least one parameter."))
+	}
+	if len(expr) == 1 {
+		return ExprASTResult(expr[0])
+	}
+	maxV := ExprASTResult(expr[0])
+	for i := 1; i < len(expr); i++ {
+		v := ExprASTResult(expr[i])
+		maxV = math.Max(maxV, v)
+	}
+	return maxV
+}
+
+// min(2) = 2
+// min(2, 3) = 2
+// min(2, 3, 1) = 1
+func defMin(expr ...ExprAST) float64 {
+	if len(expr) == 0 {
+		panic(errors.New("calling function `min` must have at least one parameter."))
+	}
+	if len(expr) == 1 {
+		return ExprASTResult(expr[0])
+	}
+	maxV := ExprASTResult(expr[0])
+	for i := 1; i < len(expr); i++ {
+		v := ExprASTResult(expr[i])
+		maxV = math.Min(maxV, v)
+	}
+	return maxV
+}
+
+// noerr(1/0) = 0
+// noerr(2.5/(1-1)) = 0
+func defNoErr(expr ...ExprAST) (r float64) {
+	defer func() {
+		if e := recover(); e != nil {
+			r = 0
+		}
+	}()
+	return ExprASTResult(expr[0])
+}
+
+func defNone(expr ...ExprAST) (r float64) {
+	return 0
+}

-package domain
+package astexpr
 
 import (
 	"encoding/json"
 	"fmt"
+	"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/domain"
 )
 
 const (
@@ -16,6 +17,11 @@ type ExprAST interface {
 	toStr() string
 }
 
+type NumberExprAST struct {
+	Val float64
+	Str string
+}
+
 type ValueExprAST struct {
 	ExprType string `json:"exprType"`
 	Val      string `json:"val"`
@@ -23,9 +29,9 @@ type ValueExprAST struct {
 }
 
 type FieldExprAST struct {
-	ExprType string      `json:"exprType"`
-	Str      string      `json:"str"`
-	Field    *TableField `json:"field"`
+	ExprType string             `json:"exprType"`
+	Str      string             `json:"str"`
+	Field    *domain.TableField `json:"field"`
 }
 
 type BinaryExprAST struct {
@@ -42,6 +48,13 @@ type FunCallerExprAST struct {
 	Args      []ExprAST `json:"args"`
 }
 
+func (n NumberExprAST) toStr() string {
+	return fmt.Sprintf(
+		"NumberExprAST:%s",
+		n.Str,
+	)
+}
+
 func (n ValueExprAST) toStr() string {
 	return fmt.Sprintf(
 		"ValueExprAST:%s",
@@ -84,7 +97,7 @@ type CloneBinaryExprAST struct {
 	Rhs json.RawMessage `json:"rhs"`
 }
 
-func AstExprUnmarshalJSON(data []byte) (interface{}, error) {
+func ExprUnmarshal(data []byte) (interface{}, error) {
 	var m = make(map[string]interface{})
 	if err := json.Unmarshal(data, &m); err != nil {
 		return nil, err
@@ -108,7 +121,7 @@ func unmarshalMapInterface(m map[string]interface{}, rawData []byte) (interface{
 		}
 		exprReturn := &FunCallerExprAST{Name: expr.Name, ExprType: TypeFunCallerExprAST}
 		for i := range expr.Arg {
-			subExpr, err := AstExprUnmarshalJSON(expr.Arg[i])
+			subExpr, err := ExprUnmarshal(expr.Arg[i])
 			if err != nil {
 				return nil, err
 			}
@@ -126,7 +139,7 @@ func unmarshalMapInterface(m map[string]interface{}, rawData []byte) (interface{
 		}
 		exprReturn := &BinaryExprAST{Op: expr.Op, ExprType: TypeBinaryExprAST}
 		if len(expr.Lhs) > 0 {
-			subExpr, err := AstExprUnmarshalJSON(expr.Lhs)
+			subExpr, err := ExprUnmarshal(expr.Lhs)
 			if err != nil {
 				return nil, err
 			}
@@ -135,7 +148,7 @@ func unmarshalMapInterface(m map[string]interface{}, rawData []byte) (interface{
 			}
 		}
 		if len(expr.Rhs) > 0 {
-			subExpr, err := AstExprUnmarshalJSON(expr.Rhs)
+			subExpr, err := ExprUnmarshal(expr.Rhs)
 			if err != nil {
 				return nil, err
 			}

-package domain
+package astexpr
 
 import (
 	"github.com/linmadan/egglib-go/utils/json"
 	"github.com/stretchr/testify/assert"
+	"gitlab.fjmaimaimai.com/allied-creation/character-library-metadata-bastion/pkg/domain"
 	"testing"
 )
 
@@ -57,7 +58,7 @@ func TestAstExprUnmarshalJSON(t *testing.T) {
 								&FieldExprAST{
 									ExprType: TypeFieldExprAST,
 									Str:      "业绩1",
-									Field: &TableField{
+									Field: &domain.TableField{
 										TableId:      1,
 										TableName:    "测试ABC",
 										TableSqlName: "table_abc_test",
@@ -83,7 +84,7 @@ func TestAstExprUnmarshalJSON(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		v, err := AstExprUnmarshalJSON(data)
+		v, err := ExprUnmarshal(data)
 		if err != nil {
 			t.Fatal(err)
 		}

+package astexpr
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+)
+
+var precedence = map[string]int{
+	"+": 20, "-": 20, "*": 40, "/": 40, "%": 40, "^": 60,
+	"=": 10, ">": 10, "<": 10, "<=": 10, ">=": 10, "&": 40,
+}
+
+const (
+	// Identifier 标识符 e.g.函数名、表字段
+	Identifier = iota
+	// Literal 文字 e.g. 50
+	Literal
+	// Operator 计算操作 e.g. + - * /
+	Operator
+	// COMMA 命令, e.g. (
+	COMMA
+	// CompareOperator 比较操作 e.g. < = >
+	CompareOperator
+	// StringArgs 字符串参数
+	StringArgs
+)
+
+type Token struct {
+	// raw characters
+	Tok string
+	// type with Literal/Operator
+	Type,
+	Flag int
+
+	Offset int
+}
+
+type Parser struct {
+	Source string
+
+	ch     byte
+	offset int
+
+	err error
+}
+
+func ParseToken(s string) ([]*Token, error) {
+	p := &Parser{
+		Source: s,
+		err:    nil,
+		ch:     s[0],
+	}
+	toks := p.parse()
+	if p.err != nil {
+		return nil, p.err
+	}
+	return toks, nil
+}
+
+func (p *Parser) parse() []*Token {
+	toks := make([]*Token, 0)
+	for {
+		tok := p.nextTok()
+		if tok == nil {
+			break
+		}
+		toks = append(toks, tok)
+	}
+	return toks
+}
+
+func (p *Parser) nextTok() *Token {
+	if p.offset >= len(p.Source) || p.err != nil {
+		return nil
+	}
+	var err error
+	for p.isWhitespace(p.ch) && err == nil {
+		err = p.nextCh()
+	}
+	start := p.offset
+	var tok *Token
+	switch p.ch {
+	case
+		'(',
+		')',
+		'+',
+		'-',
+		'*',
+		'/',
+		'^',
+		'%',
+		'&':
+		tok = &Token{
+			Tok:  string(p.ch),
+			Type: Operator,
+		}
+		tok.Offset = start
+		err = p.nextCh()
+	case
+		'>',
+		'<',
+		'=':
+		if p.isCompareWordChar(p.ch) {
+			for p.isCompareWordChar(p.ch) && p.nextCh() == nil {
+			}
+			tok = &Token{
+				Tok:  p.Source[start:p.offset],
+				Type: CompareOperator,
+			}
+			tok.Offset = start
+		} else if p.ch != ' ' {
+			s := fmt.Sprintf("symbol error: unknown '%v', pos [%v:]\n%s",
+				string(p.ch),
+				start,
+				ErrPos(p.Source, start))
+			p.err = errors.New(s)
+		}
+	case
+		'0',
+		'1',
+		'2',
+		'3',
+		'4',
+		'5',
+		'6',
+		'7',
+		'8',
+		'9':
+		for p.isDigitNum(p.ch) && p.nextCh() == nil {
+			if (p.ch == '-' || p.ch == '+') && p.Source[p.offset-1] != 'e' {
+				break
+			}
+		}
+		tok = &Token{
+			Tok:  strings.ReplaceAll(p.Source[start:p.offset], "_", ""),
+			Type: Literal,
+		}
+		tok.Offset = start
+	case '"':
+		for (p.isDigitNum(p.ch) || p.isChar(p.ch)) && p.nextCh() == nil {
+			if p.ch == '"' {
+				break
+			}
+		}
+		err = p.nextCh()
+		tok = &Token{
+			Tok:  p.Source[start:p.offset],
+			Type: StringArgs,
+		}
+		tok.Offset = start
+	case ',':
+		tok = &Token{
+			Tok:  string(p.ch),
+			Type: COMMA,
+		}
+		tok.Offset = start
+		err = p.nextCh()
+
+	default:
+		if p.isChar(p.ch) {
+			for p.isWordChar(p.ch) && p.nextCh() == nil {
+			}
+			tok = &Token{
+				Tok:  p.Source[start:p.offset],
+				Type: Identifier,
+			}
+			tok.Offset = start
+		} else if p.ch != ' ' {
+			s := fmt.Sprintf("symbol error: unknown '%v', pos [%v:]\n%s",
+				string(p.ch),
+				start,
+				ErrPos(p.Source, start))
+			p.err = errors.New(s)
+		}
+	}
+	return tok
+}
+
+func (p *Parser) nextCh() error {
+	p.offset++
+	if p.offset < len(p.Source) {
+		p.ch = p.Source[p.offset]
+		return nil
+	}
+	return errors.New("EOF")
+}
+
+func (p *Parser) isWhitespace(c byte) bool {
+	return c == ' ' ||
+		c == '\t' ||
+		c == '\n' ||
+		c == '\v' ||
+		c == '\f' ||
+		c == '\r'
+}
+
+func (p *Parser) isDigitNum(c byte) bool {
+	return '0' <= c && c <= '9' || c == '.' || c == '_' || c == 'e' || c == '-' || c == '+'
+}
+
+func (p *Parser) isChar(c byte) bool {
+	return 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || c == '.' || c == '"'
+}
+
+func (p *Parser) isWordChar(c byte) bool {
+	return p.isChar(c) || '0' <= c && c <= '9'
+}
+
+func (p *Parser) isCompareWordChar(c byte) bool {
+	return c == '=' || c == '<' || c == '>'
+}

+package astexpr
+
+import (
+	"encoding/json"
+	"fmt"
+	"testing"
+)
+
+func TestExecA(t *testing.T) {
+	exp := "1+2"
+	exec(exp)
+}
+
+func TestExecB(t *testing.T) {
+	exp := "1+2-4"
+	exec(exp)
+}
+
+func TestExecC(t *testing.T) {
+	exp := "1+2-4*3-8"
+	exec(exp)
+}
+
+func TestExecD(t *testing.T) {
+	exp := "1+2-(4*3-8)"
+	exec(exp)
+}
+
+func TestExecE(t *testing.T) {
+	exp := "1+2-(4*3+(1-8))"
+	exec(exp)
+}
+
+func TestExecF(t *testing.T) {
+	exp := "1+(2-(4*3+(1-8)))"
+	exec(exp)
+}
+
+func TestExecG(t *testing.T) {
+	exp := "((1-2)*(3-8))*((((9+2222))))"
+	exec(exp)
+}
+
+func TestExecH(t *testing.T) {
+	exp := "0.8888-0.1 * 444         -0.2"
+	exec(exp)
+}
+
+func TestExecI(t *testing.T) {
+	exp := "0.8888-0.1 * (444         -0.2)"
+	exec(exp)
+}
+
+func TestExecJ(t *testing.T) {
+	exp := "1_234_567*2-3"
+	exec(exp)
+}
+
+func TestExecK(t *testing.T) {
+	exp := "2.3e4*4/3"
+	exec(exp)
+}
+
+func TestExecL(t *testing.T) {
+	exp := "-1+9-88"
+	exec(exp)
+}
+
+func TestExecM(t *testing.T) {
+	exp := "-1+9-88+(88)"
+	exec(exp)
+}
+
+func TestExecN(t *testing.T) {
+	exp := "-1+9-88+(-88)*666-1"
+	exec(exp)
+}
+
+func TestExecO(t *testing.T) {
+	exp := "-(1)+(3)-(-3)*7-((-3))"
+	exec(exp)
+}
+
+func TestExecP(t *testing.T) {
+	exp := "-(-9+3)"
+	exec(exp)
+}
+
+func TestExecQ(t *testing.T) {
+	exp := "2e-3*2+2e2+1"
+	exec(exp)
+}
+
+func TestExecR(t *testing.T) {
+	exp := "3.8 - 56 / (1-1) - 4"
+	exec(exp)
+}
+
+func TestExecS(t *testing.T) {
+	exp := "noerr(3.8 - 56 / (1-1) - 4)"
+	exec(exp)
+}
+
+func TestFunCaller(t *testing.T) {
+	funs := []struct {
+		Name string
+		Argc int
+		Fun  func(expr ...ExprAST) float64
+		Exp  string
+		R    float64
+	}{
+		//{
+		//	"double",
+		//	1,
+		//	func(expr ...engine.ExprAST) float64 {
+		//		return engine.ExprASTResult(expr[0]) * 2
+		//	},
+		//	"double(6)",
+		//	12,
+		//},
+		{
+			"sum",
+			-1,
+			nil,
+			"sum(if(100+10,table.a,20))",
+			10,
+		},
+		{
+			"sum",
+			-1,
+			nil,
+			"sum(if(100<10,table.a,20))",
+			10,
+		},
+		{
+			"sum",
+			-1,
+			nil,
+			"sum(if(100<10,table.a,20+30))",
+			10,
+		},
+		{
+			"sum",
+			-1,
+			nil,
+			"sum(if(table.a<table.b,table.a,20+30))",
+			10,
+		},
+		{
+			"sum",
+			-1,
+			nil,
+			"sum(if(table.a<=table.b,table.a,20+30))",
+			10,
+		},
+	}
+	for _, f := range funs {
+		if f.Fun != nil {
+			_ = RegFunction(f.Name, f.Argc, f.Fun)
+		}
+		r, err := Parse(f.Exp)
+		if err != nil {
+
+		}
+		if r != 0 {
+
+		}
+	}
+}
+
+func TestFunCaller2(t *testing.T) {
+	funs := []struct {
+		Name string
+		Exp  []string
+	}{
+		{
+			"sum",
+			[]string{"sum(table.a)"},
+		},
+		{
+			"sumif",
+			[]string{"sumif(table.month,10,table.count)"},
+		},
+		{
+			"if",
+			[]string{"if(table.month>10,table.count1,table.count2)"},
+		},
+		{
+			"and",
+			[]string{"and(table.year=2011,table.month=6)"},
+		},
+		{
+			"or",
+			[]string{"or(table.year=2011,table.year=2012)"},
+		},
+		{
+			"month",
+			[]string{"month(\"1991-1-1\")"},
+		},
+		{
+			"year",
+			[]string{"year(\"1991-1-1\")"},
+		},
+		{
+			"round",
+			[]string{
+				"round(1.56)",
+				"round(table.a)",
+			},
+		},
+		{
+			"rounddown",
+			[]string{
+				"rounddown(1.56)",
+				"rounddown(table.a)",
+			},
+		},
+		{
+			"roundup",
+			[]string{
+				"roundup(1.56)",
+				"roundup(table.a)",
+			},
+		},
+		{
+			"count",
+			[]string{
+				"count(1.56)",
+				"count(table.a)",
+			},
+		},
+		{
+			"&",
+			[]string{
+				"table.a&table.b",
+			},
+		},
+	}
+	for _, f := range funs {
+		for _, exp := range f.Exp {
+			r, err := Parse(exp)
+			if err != nil {
+				t.Error(err)
+			}
+			if r != 0 {
+
+			}
+		}
+	}
+}
+
+func Parse(s string) (r float64, err error) {
+	toks, err := ParseToken(s)
+	if err != nil {
+		return 0, err
+	}
+	ast := NewAST(toks, s)
+	if ast.Err != nil {
+		return 0, ast.Err
+	}
+	ar := ast.ParseExpression()
+	if ast.Err != nil {
+		return 0, ast.Err
+	}
+	defer func() {
+		if e := recover(); e != nil {
+			err = e.(error)
+		}
+	}()
+	if ar != nil {
+		fmt.Printf("ExprAST: %+v\n", ar)
+	}
+	arData, _ := json.Marshal(ar)
+	fmt.Printf("%s\n", string(arData))
+
+	return 0, err
+}
+
+// call engine
+func exec(exp string) {
+	// input text -> []token
+	toks, err := ParseToken(exp)
+	if err != nil {
+		fmt.Println("ERROR: " + err.Error())
+		return
+	}
+
+	// []token -> AST Tree
+	ast := NewAST(toks, exp)
+	if ast.Err != nil {
+		fmt.Println("ERROR: " + ast.Err.Error())
+		return
+	}
+	// AST builder
+	ar := ast.ParseExpression()
+	if ast.Err != nil {
+		fmt.Println("ERROR: " + ast.Err.Error())
+		return
+	}
+	fmt.Printf("ExprAST: %+v\n", ar)
+	// catch runtime errors
+	defer func() {
+		if e := recover(); e != nil {
+			fmt.Println("ERROR: ", e)
+		}
+	}()
+	// AST traversal -> result
+	r := ExprASTResult(ar)
+	fmt.Println("progressing ...\t", r)
+	fmt.Printf("%s = %v\n", exp, r)
+}

+package astexpr
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"math/big"
+	"strconv"
+	"strings"
+)
+
+// Top level function
+// Analytical expression and execution
+// err is not nil if an error occurs (including arithmetic runtime errors)
+func ParseAndExec(s string) (r float64, err error) {
+	toks, err := ParseToken(s)
+	if err != nil {
+		return 0, err
+	}
+	ast := NewAST(toks, s)
+	if ast.Err != nil {
+		return 0, ast.Err
+	}
+	ar := ast.ParseExpression()
+	if ast.Err != nil {
+		return 0, ast.Err
+	}
+	defer func() {
+		if e := recover(); e != nil {
+			err = e.(error)
+		}
+	}()
+	return ExprASTResult(ar), err
+}
+
+func ErrPos(s string, pos int) string {
+	r := strings.Repeat("-", len(s)) + "\n"
+	s += "\n"
+	for i := 0; i < pos; i++ {
+		s += " "
+	}
+	s += "^\n"
+	return r + s + r
+}
+
+// the integer power of a number
+func Pow(x float64, n float64) float64 {
+	return math.Pow(x, n)
+}
+
+func expr2Radian(expr ExprAST) float64 {
+	r := ExprASTResult(expr)
+	if TrigonometricMode == AngleMode {
+		r = r / 180 * math.Pi
+	}
+	return r
+}
+
+// Float64ToStr float64 -> string
+func Float64ToStr(f float64) string {
+	return strconv.FormatFloat(f, 'f', -1, 64)
+}
+
+// RegFunction is Top level function
+// register a new function to use in expressions
+// name: be register function name. the same function name only needs to be registered once.
+// argc: this is a number of parameter signatures. should be -1, 0, or a positive integer
+//
+//	-1 variable-length argument; >=0 fixed numbers argument
+//
+// fun:  function handler
+func RegFunction(name string, argc int, fun func(...ExprAST) float64) error {
+	if len(name) == 0 {
+		return errors.New("RegFunction name is not empty")
+	}
+	if argc < -1 {
+		return errors.New("RegFunction argc should be -1, 0, or a positive integer")
+	}
+	if _, ok := defFunc[name]; ok {
+		return errors.New("RegFunction name is already exist")
+	}
+	defFunc[name] = defS{argc, fun}
+	return nil
+}
+
+// ExprASTResult is a Top level function
+// AST traversal
+// if an arithmetic runtime error occurs, a panic exception is thrown
+func ExprASTResult(expr ExprAST) float64 {
+	var l, r float64
+	switch expr.(type) {
+	case BinaryExprAST:
+		ast := expr.(BinaryExprAST)
+		l = ExprASTResult(ast.Lhs)
+		r = ExprASTResult(ast.Rhs)
+		switch ast.Op {
+		case "+":
+			lh, _ := new(big.Float).SetString(Float64ToStr(l))
+			rh, _ := new(big.Float).SetString(Float64ToStr(r))
+			f, _ := new(big.Float).Add(lh, rh).Float64()
+			return f
+		case "-":
+			lh, _ := new(big.Float).SetString(Float64ToStr(l))
+			rh, _ := new(big.Float).SetString(Float64ToStr(r))
+			f, _ := new(big.Float).Sub(lh, rh).Float64()
+			return f
+		case "*":
+			f, _ := new(big.Float).Mul(new(big.Float).SetFloat64(l), new(big.Float).SetFloat64(r)).Float64()
+			return f
+		case "/":
+			if r == 0 {
+				panic(errors.New(
+					fmt.Sprintf("violation of arithmetic specification: a division by zero in ExprASTResult: [%g/%g]",
+						l,
+						r)))
+			}
+			f, _ := new(big.Float).Quo(new(big.Float).SetFloat64(l), new(big.Float).SetFloat64(r)).Float64()
+			return f
+		case "%":
+			if r == 0 {
+				panic(errors.New(
+					fmt.Sprintf("violation of arithmetic specification: a division by zero in ExprASTResult: [%g%%%g]",
+						l,
+						r)))
+			}
+			return float64(int(l) % int(r))
+		case "^":
+			return Pow(l, r)
+		default:
+
+		}
+	case NumberExprAST:
+		return expr.(NumberExprAST).Val
+	case FunCallerExprAST:
+		f := expr.(FunCallerExprAST)
+		def := defFunc[f.Name]
+		return def.fun(f.Args...)
+	}
+
+	return 0.0
+}

+package astexpr
+
+import (
+	"math/rand"
+	"testing"
+	"time"
+)
+
+func TestParseAndExecSimple(t *testing.T) {
+	type U struct {
+		Expr string
+		R    float64
+	}
+	exprs := []U{
+		{"1", 1},
+		{"--1", 1},
+		{"1+2", 3},
+		{"-1+2", 1},
+		{"-(1+2)", -3},
+		{"-(1+2)*5", -15},
+		{"-(1+2)*5/3", -5},
+		{"1+(-(1+2)*5/3)", -4},
+		{"3^4", 81},
+		{"3^4.5", 140.29611541307906},
+		{"3.5^4.5", 280.7412308013823},
+		{"8%2", 0},
+		{"8%3", 2},
+		{"8%3.5", 2},
+		{"1e2", 100},
+		{"1e+2", 100},
+		{"1e-2", 0.01},
+		{"1e-2+1e2", 100.01},
+		{"1e-2+1e2*6/3", 200.01},
+		{"(1e-2+1e2)*6/3", 200.02},
+		{"(88*8)+(1+1+1+1)+(6/1.5)-(99%9*(2^4))", 712},
+		{"1/3*3", 1},
+		{"123_456_789", 123456789},
+		{"123_456_789___", 123456789},
+		{"pi", 3.141592653589793},
+		{"abs(1)", 1},
+		{"abs(-1)", 1},
+		{"ceil(90.2)", 91},
+		{"ceil(90.8)", 91},
+		{"ceil(90.0)", 90},
+		{"floor(90.2)", 90},
+		{"floor(90.8)", 90},
+		{"floor(90.0)", 90},
+		{"round(90.0)", 90},
+		{"round(90.4)", 90},
+		{"round(90.5)", 91},
+		{"round(90.9)", 91},
+		{"sqrt(4)", 2},
+		{"cbrt(27)", 3},
+		{"sqrt(4) + cbrt(27)", 5},
+		{"sqrt(2^2) + cbrt(3^3)", 5},
+		{"127^2+5/2-sqrt(2^2) + cbrt(3^3)", 16132.5},
+		{"max(2)", 2},
+		{"max(abs(1)+10)", 11},
+		{"max(abs(1)+10)*2-1", 21},
+		{"max(2,3.5)", 3.5},
+		{"max(2^3,3+abs(-1)*6)", 9},
+		{"max(2^3,3+abs(-1)*6, 20)", 20},
+		{"max(2^3,3+abs(-1)*6,ceil(9.4))", 10},
+		{"max(1,2,3,4,5,6,10,7,4,5,6,9.8)", 10},
+		{"min(3.5)", 3.5},
+		{"min(ceil(1.2))", 2},
+		{"min(2,3.5)", 2},
+		{"min(2^3,3+abs(-1)*6)", 8},
+		{"min(2^3,3+abs(-1)*6,1^10)", 1},
+		{"min(99.1,0.2,3,4,5,6,10,7,4,5,6,9.8)", 0.2},
+		{"max(2^3,3^2)", 9},
+		{"min(2^3,3^2)", 8},
+		{"noerr(1/0)", 0},
+		{"noerr(1/(1-1))", 0},
+		{"0.1+0.2", 0.3},
+		{"0.3-0.1", 0.2},
+		{"10^-1", 0.1},
+		{"10^-2", 0.01},
+		{"10^-1*100", 10},
+		{"10%0", 0},
+	}
+	for _, e := range exprs {
+		r, _ := ParseAndExec(e.Expr)
+		if r != e.R {
+			t.Error(e, " ParseAndExec:", r)
+		}
+	}
+}
+
+func TestParseAndExecTrigonometric(t *testing.T) {
+	type U struct {
+		Expr       string
+		RadianMode float64
+		AngleMode  float64
+	}
+	exprs := []U{
+		{"sin(pi/2)", 1, 0.027412133592044294},
+		{"csc(pi/2)", 1, 36.48019577324057},
+		{"cos(0)", 1, 1},
+		{"sec(0)", 1, 1},
+		{"tan(pi/4)", 1, 0.013708642534394057},
+		{"cot(pi/4)", 1, 72.94668290394674},
+
+		{"sin(90)", 0.893996663600558, 1},
+		{"csc(90)", 1.1185724071637082, 1},
+		{"cos(0)", 1, 1},
+		{"sec(0)", 1, 1},
+		{"tan(45)", 1.6197751905438615, 1},
+		{"cot(45)", 0.6173696237835551, 1},
+	}
+	for _, e := range exprs {
+		TrigonometricMode = RadianMode
+		r, _ := ParseAndExec(e.Expr)
+		if r != e.RadianMode {
+			t.Error(e, " ParseAndExec RadianMode:", r)
+		}
+		TrigonometricMode = AngleMode
+		r, _ = ParseAndExec(e.Expr)
+		if r != e.AngleMode {
+			t.Error(e, " ParseAndExec AngleMode:", r)
+		}
+	}
+}
+
+func TestRegFunction(t *testing.T) {
+	funs := []struct {
+		Name string
+		Argc int
+		Fun  func(expr ...ExprAST) float64
+		Exp  string
+		R    float64
+	}{
+		{
+			"double",
+			1,
+			func(expr ...ExprAST) float64 {
+				return ExprASTResult(expr[0]) * 2
+			},
+			"double(6)",
+			12,
+		},
+		{
+			"percentage50",
+			1,
+			func(expr ...ExprAST) float64 {
+				return ExprASTResult(expr[0]) / 2
+			},
+			"percentage50(6)",
+			3,
+		},
+		{
+			"range",
+			0,
+			func(expr ...ExprAST) float64 {
+				return 10.0
+			},
+			"range()",
+			10,
+		},
+		{
+			"choice",
+			-1,
+			func(expr ...ExprAST) float64 {
+				rand.Seed(time.Now().UnixNano())
+				return ExprASTResult(expr[rand.Intn(len(expr))])
+			},
+			"choice(1.1, 9.8, 2.5, 100)",
+			10,
+		},
+	}
+	for _, f := range funs {
+		_ = RegFunction(f.Name, f.Argc, f.Fun)
+		r, err := ParseAndExec(f.Exp)
+		if f.Name == "choice" {
+			if !inSlices(r, []float64{1.1, 9.8, 2.5, 100}) {
+				t.Error(err, "RegFunction errors when register new function: ", f.Name)
+			}
+			continue
+		} else if r != f.R {
+			t.Error(err, "RegFunction errors when register new function: ", f.Name)
+		}
+	}
+
+}
+
+func TestParseAndExecError(t *testing.T) {
+	exprs := []string{
+		"(",
+		"((((((",
+		"((xscdfddff",
+		"(1",
+		"(1+",
+		"1+",
+		"1*",
+		"+2344",
+		"3+(",
+		"4+(90-",
+		"3-(4*7-2)+",
+		"3-(4*7-2)+98*",
+		"1#1",
+		"_123_456_789___",
+		"1ee3+3",
+		"sin()",
+		"sin",
+		"pi(",
+		"sin(1, 50)",
+		"max",
+		"max()",
+		"max(1,)",
+		"max(1,4,6,7,5,)",
+		"min",
+		"min(,)",
+		"min()",
+		"min(1,)",
+		"min(1,998,4,23,234,2,)",
+		"min(1,998,4,23,234,2,,,)",
+		"1/0",
+		"99.9 / (2-1-1)",
+		"(1+2)3",
+		"1+1 111",
+		"1+1 111+2",
+		"1 3",
+		"1 3-",
+	}
+	for _, e := range exprs {
+		_, err := ParseAndExec(e)
+		if err == nil {
+			t.Error(e, " this is error expr!")
+		}
+	}
+}
+
+func inSlices(target float64, s []float64) bool {
+	for _, v := range s {
+		if v == target {
+			return true
+		}
+	}
+	return false
+}

@@ -28,6 +28,16 @@ type Field struct {
 	Order string `json:"order,omitempty"`
 }
 
+func (f *Field) SqlTypeEqual(compare *Field) bool {
+	if f.SQLType == compare.SQLType {
+		return true
+	}
+	if SQLType(f.SQLType).IsString() == SQLType(compare.SQLType).IsString() {
+		return true
+	}
+	return false
+}
+
 func (f *Field) Valid() error {
 	if _, ok := SQLTypeMap[strings.ToUpper(f.SQLType)]; !ok {
 		return fmt.Errorf("unknown sql type:%v", f.SQLType)

@@ -79,6 +79,12 @@ func (ptr *AppendDataToTableService) AppendData(ctx *domain.Context, fileId int,
 					continue
 				}
 			}
+			if fromField.SQLType != "" && !toField.SqlTypeEqual(fromField) {
+				//return nil, fmt.Errorf("字段【%s】的类型与导入数据表的类型不匹配", toField.Name)
+				return map[string]interface{}{
+					"result": fmt.Sprintf("字段【%s】的类型与导入数据表的类型不匹配", toField.Name),
+				}, nil
+			}
 			requestData.To = append(requestData.To, toField)
 			requestData.From = append(requestData.From, fromField)
 		}