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1604 lines (1381 loc) · 35.3 KB
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// Copyright 2012, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sqlparser
import (
"errors"
"fmt"
"strconv"
"github.com/honeycombio/sqlparser/dependency/sqltypes"
)
// Instructions for creating new types: If a type
// needs to satisfy an interface, declare that function
// along with that interface. This will help users
// identify the list of types to which they can assert
// those interfaces.
// If the member of a type has a string with a predefined
// list of values, declare those values as const following
// the type.
// For interfaces that define dummy functions to consolidate
// a set of types, define the function as ITypeName.
// This will help avoid name collisions.
// Parse parses the sql and returns a Statement, which
// is the AST representation of the query.
func Parse(sql string) (Statement, error) {
tokenizer := NewStringTokenizer(sql)
if yyParse(tokenizer) != 0 {
return nil, errors.New(tokenizer.LastError)
}
return tokenizer.ParseTree, nil
}
// SQLNode defines the interface for all nodes
// generated by the parser.
type SQLNode interface {
Format(buf *TrackedBuffer)
Serialize([]rune) []rune
}
// String returns a string representation of an SQLNode.
func String(node SQLNode) string {
buf := NewTrackedBuffer(nil)
buf.Myprintf("%v", node)
return buf.String()
}
// Serialize returns a rune serialized representation of an SQLNode.
func Serialize(node SQLNode, lengthHint int) []rune {
backing := make([]rune, lengthHint)
rv := backing[0:0]
rv = node.Serialize(rv)
return rv
}
// Statement represents a statement.
type Statement interface {
IStatement()
SQLNode
}
func (*Union) IStatement() {}
func (*Select) IStatement() {}
func (*Insert) IStatement() {}
func (*Update) IStatement() {}
func (*Delete) IStatement() {}
func (*Set) IStatement() {}
func (*DDL) IStatement() {}
func (*Other) IStatement() {}
// SelectStatement any SELECT statement.
type SelectStatement interface {
ISelectStatement()
IStatement()
IInsertRows()
SQLNode
}
func (*Select) ISelectStatement() {}
func (*Union) ISelectStatement() {}
// Select represents a SELECT statement.
type Select struct {
Comments Comments
Distinct string
SelectExprs SelectExprs
From TableExprs
Where *Where
GroupBy GroupBy
Having *Where
OrderBy OrderBy
Limit *Limit
Lock string
}
// Select.Distinct
const (
AST_DISTINCT = "distinct "
)
// Select.Lock
const (
AST_FOR_UPDATE = " for update"
AST_SHARE_MODE = " lock in share mode"
)
func appendString(runes []rune, s string) []rune {
for _, r := range []rune(s) {
runes = append(runes, r)
}
return runes
}
func (node *Select) Format(buf *TrackedBuffer) {
buf.Myprintf("select %v%s%v from %v%v%v%v%v%v%s",
node.Comments, node.Distinct, node.SelectExprs,
node.From, node.Where,
node.GroupBy, node.Having, node.OrderBy,
node.Limit, node.Lock)
}
func (node *Select) Serialize(runes []rune) []rune {
runes = appendString(runes, "select ")
// no comments
runes = appendString(runes, node.Distinct)
runes = node.SelectExprs.Serialize(runes)
if len(node.From) == 0 {
return runes
}
runes = appendString(runes, " from ")
runes = node.From.Serialize(runes)
if node.Where != nil {
runes = node.Where.Serialize(runes)
}
runes = node.GroupBy.Serialize(runes)
if node.Having != nil {
runes = node.Having.Serialize(runes)
}
runes = node.OrderBy.Serialize(runes)
if node.Limit != nil {
runes = node.Limit.Serialize(runes)
}
runes = appendString(runes, node.Lock)
return runes
}
// Union represents a UNION statement.
type Union struct {
Type string
Left, Right SelectStatement
}
// Union.Type
const (
AST_UNION = " union "
AST_UNION_ALL = " union all "
AST_SET_MINUS = " minus "
AST_EXCEPT = " except "
AST_INTERSECT = " intersect "
)
func (node *Union) Format(buf *TrackedBuffer) {
buf.Myprintf("%v %s %v", node.Left, node.Type, node.Right)
}
func (node *Union) Serialize(runes []rune) []rune {
runes = node.Left.Serialize(runes)
runes = appendString(runes, node.Type)
runes = node.Right.Serialize(runes)
return runes
}
// Insert represents an INSERT statement.
type Insert struct {
Comments Comments
Table *TableName
Columns Columns
Rows InsertRows
OnDup OnDup
}
func (node *Insert) Format(buf *TrackedBuffer) {
buf.Myprintf("insert %vinto %v%v %v%v",
node.Comments,
node.Table, node.Columns, node.Rows, node.OnDup)
}
func (node *Insert) Serialize(runes []rune) []rune {
runes = appendString(runes, "insert ")
// skip comments
runes = appendString(runes, "into ")
runes = node.Table.Serialize(runes)
runes = node.Columns.Serialize(runes)
runes = append(runes, ' ')
runes = node.Rows.Serialize(runes)
runes = node.OnDup.Serialize(runes)
return runes
}
// InsertRows represents the rows for an INSERT statement.
type InsertRows interface {
IInsertRows()
SQLNode
}
func (*Select) IInsertRows() {}
func (*Union) IInsertRows() {}
func (Values) IInsertRows() {}
// Update represents an UPDATE statement.
type Update struct {
Comments Comments
Table *TableName
Exprs UpdateExprs
Where *Where
OrderBy OrderBy
Limit *Limit
}
func (node *Update) Format(buf *TrackedBuffer) {
buf.Myprintf("update %v%v set %v%v%v%v",
node.Comments, node.Table,
node.Exprs, node.Where, node.OrderBy, node.Limit)
}
func (node *Update) Serialize(runes []rune) []rune {
runes = appendString(runes, "update ")
// skip comments
runes = node.Table.Serialize(runes)
runes = appendString(runes, " set ")
runes = node.Exprs.Serialize(runes)
if node.Where != nil {
runes = node.Where.Serialize(runes)
}
runes = node.OrderBy.Serialize(runes)
if node.Limit != nil {
runes = node.Limit.Serialize(runes)
}
return runes
}
// Delete represents a DELETE statement.
type Delete struct {
Comments Comments
Table *TableName
Where *Where
OrderBy OrderBy
Limit *Limit
}
func (node *Delete) Format(buf *TrackedBuffer) {
buf.Myprintf("delete %vfrom %v%v%v%v",
node.Comments,
node.Table, node.Where, node.OrderBy, node.Limit)
}
func (node *Delete) Serialize(runes []rune) []rune {
runes = appendString(runes, "delete ")
// skip comments
runes = appendString(runes, "from ")
runes = node.Table.Serialize(runes)
if node.Where != nil {
runes = node.Where.Serialize(runes)
}
runes = node.OrderBy.Serialize(runes)
if node.Limit != nil {
runes = node.Limit.Serialize(runes)
}
return runes
}
// Set represents a SET statement.
type Set struct {
Comments Comments
Exprs UpdateExprs
}
func (node *Set) Format(buf *TrackedBuffer) {
buf.Myprintf("set %v%v", node.Comments, node.Exprs)
}
func (node *Set) Serialize(runes []rune) []rune {
runes = appendString(runes, "set ")
// skip comments
runes = node.Exprs.Serialize(runes)
return runes
}
// DDL represents a CREATE, ALTER, DROP or RENAME statement.
// Table is set for AST_ALTER, AST_DROP, AST_RENAME.
// NewName is set for AST_ALTER, AST_CREATE, AST_RENAME.
type DDL struct {
Action string
Table []rune
NewName []rune
}
type ColumnAtts []string
func (node ColumnAtts) Format(buf *TrackedBuffer) {
prefix := " "
for _, v := range node {
if v != "" {
buf.Myprintf("%s%s", prefix, v)
}
}
}
func (node ColumnAtts) Serialize(runes []rune) []rune {
prefix := ' '
for _, v := range node {
if v != "" {
runes = append(runes, prefix)
runes = appendString(runes, v)
}
}
return runes
}
type ColumnDefinition struct {
ColName string
ColType string
ColumnAtts ColumnAtts
}
func (node ColumnDefinition) Format(buf *TrackedBuffer) {
buf.Myprintf("%s %s%v", node.ColName, node.ColType, node.ColumnAtts)
}
func (node ColumnDefinition) Serialize(runes []rune) []rune {
runes = appendString(runes, node.ColName)
runes = append(runes, ' ')
runes = appendString(runes, node.ColType)
runes = node.ColumnAtts.Serialize(runes)
return runes
}
type ColumnDefinitions []*ColumnDefinition
func (node ColumnDefinitions) Format(buf *TrackedBuffer) {
prefix := ""
buf.Myprintf("(\n")
for i := 0; i < len(node); i++ {
buf.Myprintf("%s\t%v", prefix, node[i])
prefix = ",\n"
}
buf.Myprintf("\n)")
}
func (node ColumnDefinitions) Serialize(runes []rune) []rune {
prefix := ""
runes = appendString(runes, "(\n")
for i := 0; i < len(node); i++ {
runes = appendString(runes, prefix)
runes = node[i].Serialize(runes)
prefix = ",\n"
}
runes = appendString(runes, "\n)")
return runes
}
type CreateTable struct {
Name []rune
ColumnDefinitions ColumnDefinitions
}
func (node *CreateTable) Format(buf *TrackedBuffer) {
buf.Myprintf("create table %s %v", node.Name, node.ColumnDefinitions)
}
func (node *CreateTable) Serialize(runes []rune) []rune {
runes = appendString(runes, "create table ")
runes = append(runes, node.Name...)
runes = append(runes, ' ')
runes = node.ColumnDefinitions.Serialize(runes)
return runes
}
func (node *CreateTable) IStatement() {}
const (
AST_TABLE = "table "
AST_VIEW = "view "
)
const (
AST_CREATE = "create "
AST_ALTER = "alter "
AST_DROP = "drop "
AST_RENAME = "rename "
)
func (node *DDL) Format(buf *TrackedBuffer) {
switch node.Action {
case AST_CREATE:
buf.Myprintf("%s table %s", node.Action, node.NewName)
case AST_RENAME:
buf.Myprintf("%s table %s %s", node.Action, node.Table, node.NewName)
default:
buf.Myprintf("%s table %s", node.Action, node.Table)
}
}
func (node *DDL) Serialize(runes []rune) []rune {
runes = appendString(runes, node.Action)
runes = appendString(runes, "table ")
switch node.Action {
case AST_CREATE:
runes = append(runes, node.NewName...)
case AST_RENAME:
runes = append(runes, node.Table...)
runes = append(runes, ' ')
runes = append(runes, node.NewName...)
default:
runes = append(runes, node.Table...)
}
return runes
}
// Other represents a SHOW, DESCRIBE, or EXPLAIN statement.
// It should be used only as an indicator. It does not contain
// the full AST for the statement.
type Other struct{}
func (node *Other) Format(buf *TrackedBuffer) {
buf.WriteString("other")
}
func (node *Other) Serialize(runes []rune) []rune {
return appendString(runes, "other")
}
// Comments represents a list of comments.
type Comments [][]rune
func (node Comments) Format(buf *TrackedBuffer) {
for _, c := range node {
buf.Myprintf("%s ", c)
}
}
func (node Comments) Serialize(runes []rune) []rune {
return runes
}
// SelectExprs represents SELECT expressions.
type SelectExprs []SelectExpr
func (node SelectExprs) Format(buf *TrackedBuffer) {
var prefix string
for _, n := range node {
buf.Myprintf("%s%v", prefix, n)
prefix = ","
}
}
func (node SelectExprs) Serialize(runes []rune) []rune {
var prefix string
for _, n := range node {
runes = appendString(runes, prefix)
runes = n.Serialize(runes)
prefix = ","
}
return runes
}
// SelectExpr represents a SELECT expression.
type SelectExpr interface {
ISelectExpr()
SQLNode
}
func (*StarExpr) ISelectExpr() {}
func (*NonStarExpr) ISelectExpr() {}
// StarExpr defines a '*' or 'table.*' expression.
type StarExpr struct {
TableName []rune
}
func (node *StarExpr) Format(buf *TrackedBuffer) {
if node.TableName != nil {
buf.Myprintf("%s.", string(node.TableName))
}
buf.Myprintf("*")
}
func (node *StarExpr) Serialize(runes []rune) []rune {
if node.TableName != nil {
runes = append(runes, node.TableName...)
runes = append(runes, '.')
}
runes = append(runes, '*')
return runes
}
// NonStarExpr defines a non-'*' select expr.
type NonStarExpr struct {
Expr Expr
As []rune
}
func (node *NonStarExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v", node.Expr)
if len(node.As) > 0 {
buf.Myprintf(" as %s", string(node.As))
}
}
func (node *NonStarExpr) Serialize(runes []rune) []rune {
runes = node.Expr.Serialize(runes)
if len(node.As) > 0 {
runes = appendString(runes, " as ")
runes = append(runes, node.As...)
}
return runes
}
// Columns represents an insert column list.
// The syntax for Columns is a subset of SelectExprs.
// So, it's castable to a SelectExprs and can be analyzed
// as such.
type Columns []SelectExpr
func (node Columns) Format(buf *TrackedBuffer) {
if node == nil {
return
}
buf.Myprintf("(%v)", SelectExprs(node))
}
func (node Columns) Serialize(runes []rune) []rune {
if node == nil {
return runes
}
runes = append(runes, '(')
runes = SelectExprs(node).Serialize(runes)
runes = append(runes, ')')
return runes
}
// TableExprs represents a list of table expressions.
type TableExprs []TableExpr
func (node TableExprs) Format(buf *TrackedBuffer) {
var prefix string
for _, n := range node {
buf.Myprintf("%s%v", prefix, n)
prefix = ", "
}
}
func (node TableExprs) Serialize(runes []rune) []rune {
var prefix string
for _, n := range node {
runes = appendString(runes, prefix)
runes = n.Serialize(runes)
prefix = ", "
}
return runes
}
// TableExpr represents a table expression.
type TableExpr interface {
ITableExpr()
SQLNode
}
func (*AliasedTableExpr) ITableExpr() {}
func (*ParenTableExpr) ITableExpr() {}
func (*JoinTableExpr) ITableExpr() {}
// AliasedTableExpr represents a table expression
// coupled with an optional alias or index hint.
type AliasedTableExpr struct {
Expr SimpleTableExpr
As []rune
Hints *IndexHints
}
func (node *AliasedTableExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v", node.Expr)
if node.As != nil {
buf.Myprintf(" as %s", string(node.As))
}
if node.Hints != nil {
// Hint node provides the space padding.
buf.Myprintf("%v", node.Hints)
}
}
func (node *AliasedTableExpr) Serialize(runes []rune) []rune {
runes = node.Expr.Serialize(runes)
if node.As != nil {
runes = appendString(runes, " as ")
runes = append(runes, node.As...)
}
if node.Hints != nil {
runes = node.Hints.Serialize(runes)
}
return runes
}
// SimpleTableExpr represents a simple table expression.
type SimpleTableExpr interface {
ISimpleTableExpr()
SQLNode
}
func (*TableName) ISimpleTableExpr() {}
func (*Subquery) ISimpleTableExpr() {}
// TableName represents a table name.
type TableName struct {
Name, Qualifier []rune
}
func (node *TableName) Format(buf *TrackedBuffer) {
if node.Qualifier != nil {
escape(buf, node.Qualifier)
buf.Myprintf(".")
}
escape(buf, node.Name)
}
func (node *TableName) Serialize(runes []rune) []rune {
if node.Qualifier != nil {
runes = escapeRunes(runes, node.Qualifier)
runes = append(runes, '.')
}
runes = escapeRunes(runes, node.Name)
return runes
}
// ParenTableExpr represents a parenthesized TableExpr.
type ParenTableExpr struct {
Expr TableExpr
}
func (node *ParenTableExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("(%v)", node.Expr)
}
func (node *ParenTableExpr) Serialize(runes []rune) []rune {
runes = append(runes, '(')
runes = node.Expr.Serialize(runes)
runes = append(runes, ')')
return runes
}
// JoinTableExpr represents a TableExpr that's a JOIN operation.
type JoinTableExpr struct {
LeftExpr TableExpr
Join string
RightExpr TableExpr
On BoolExpr
}
// JoinTableExpr.Join
const (
AST_JOIN = " join "
AST_INNER_JOIN = " inner join "
AST_STRAIGHT_JOIN = " straight_join "
AST_LEFT_JOIN = " left join "
AST_RIGHT_JOIN = " right join "
AST_CROSS_JOIN = " cross join "
AST_NATURAL_JOIN = " natural join "
)
func (node *JoinTableExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v%s%v", node.LeftExpr, node.Join, node.RightExpr)
if node.On != nil {
buf.Myprintf(" on %v", node.On)
}
}
func (node *JoinTableExpr) Serialize(runes []rune) []rune {
runes = node.LeftExpr.Serialize(runes)
runes = appendString(runes, node.Join)
runes = node.RightExpr.Serialize(runes)
if node.On != nil {
runes = appendString(runes, " on ")
runes = node.On.Serialize(runes)
}
return runes
}
// IndexHints represents a list of index hints.
type IndexHints struct {
Type string
Indexes [][]rune
}
const (
AST_USE = "use"
AST_IGNORE = "ignore"
AST_FORCE = "force"
)
func (node *IndexHints) Format(buf *TrackedBuffer) {
buf.Myprintf(" %s index ", node.Type)
prefix := "("
for _, n := range node.Indexes {
buf.Myprintf("%s%s", prefix, string(n))
prefix = ", "
}
buf.Myprintf(")")
}
func (node *IndexHints) Serialize(runes []rune) []rune {
runes = append(runes, ' ')
runes = appendString(runes, node.Type)
runes = appendString(runes, " index ")
prefix := "("
for _, n := range node.Indexes {
runes = appendString(runes, prefix)
runes = appendString(runes, string(n))
prefix = ", "
}
runes = append(runes, ')')
return runes
}
// Where represents a WHERE or HAVING clause.
type Where struct {
Type string
Expr BoolExpr
}
// Where.Type
const (
AST_WHERE = " where "
AST_HAVING = " having "
)
// NewWhere creates a WHERE or HAVING clause out
// of a BoolExpr. If the expression is nil, it returns nil.
func NewWhere(typ string, expr BoolExpr) *Where {
if expr == nil {
return nil
}
return &Where{Type: typ, Expr: expr}
}
func (node *Where) Format(buf *TrackedBuffer) {
if node == nil {
return
}
buf.Myprintf("%s%v", node.Type, node.Expr)
}
func (node *Where) Serialize(runes []rune) []rune {
if node == nil {
return runes
}
runes = appendString(runes, node.Type)
runes = node.Expr.Serialize(runes)
return runes
}
// Expr represents an expression.
type Expr interface {
IExpr()
SQLNode
}
func (*AndExpr) IExpr() {}
func (*OrExpr) IExpr() {}
func (*NotExpr) IExpr() {}
func (*ParenBoolExpr) IExpr() {}
func (*ComparisonExpr) IExpr() {}
func (*RangeCond) IExpr() {}
func (*ExistsExpr) IExpr() {}
func (TimestampVal) IExpr() {}
func (BinaryVal) IExpr() {}
func (StrVal) IExpr() {}
func (NumVal) IExpr() {}
func (ValArg) IExpr() {}
func (*NullVal) IExpr() {}
func (*ColName) IExpr() {}
func (ValTuple) IExpr() {}
func (*Subquery) IExpr() {}
func (ListArg) IExpr() {}
func (*BinaryExpr) IExpr() {}
func (*UnaryExpr) IExpr() {}
func (*FuncExpr) IExpr() {}
func (*CaseExpr) IExpr() {}
// BoolExpr represents a boolean expression.
type BoolExpr interface {
IBoolExpr()
Expr
}
func (*AndExpr) IBoolExpr() {}
func (*OrExpr) IBoolExpr() {}
func (*NotExpr) IBoolExpr() {}
func (*ParenBoolExpr) IBoolExpr() {}
func (*ComparisonExpr) IBoolExpr() {}
func (*RangeCond) IBoolExpr() {}
func (*ExistsExpr) IBoolExpr() {}
// AndExpr represents an AND expression.
type AndExpr struct {
Left, Right BoolExpr
}
func (node *AndExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v and %v", node.Left, node.Right)
}
func (node *AndExpr) Serialize(runes []rune) []rune {
runes = node.Left.Serialize(runes)
runes = appendString(runes, " and ")
runes = node.Right.Serialize(runes)
return runes
}
// OrExpr represents an OR expression.
type OrExpr struct {
Left, Right BoolExpr
}
func (node *OrExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v or %v", node.Left, node.Right)
}
func (node *OrExpr) Serialize(runes []rune) []rune {
runes = node.Left.Serialize(runes)
runes = appendString(runes, " or ")
runes = node.Right.Serialize(runes)
return runes
}
// NotExpr represents a NOT expression.
type NotExpr struct {
Expr BoolExpr
}
func (node *NotExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("not %v", node.Expr)
}
func (node *NotExpr) Serialize(runes []rune) []rune {
runes = appendString(runes, "not ")
runes = node.Expr.Serialize(runes)
return runes
}
// ParenBoolExpr represents a parenthesized boolean expression.
type ParenBoolExpr struct {
Expr BoolExpr
}
func (node *ParenBoolExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("(%v)", node.Expr)
}
func (node *ParenBoolExpr) Serialize(runes []rune) []rune {
runes = append(runes, '(')
runes = node.Expr.Serialize(runes)
runes = append(runes, ')')
return runes
}
// ComparisonExpr represents a two-value comparison expression.
type ComparisonExpr struct {
Operator string
Left, Right ValExpr
}
// ComparisonExpr.Operator
const (
AST_EQ = "="
AST_LT = "<"
AST_GT = ">"
AST_LE = "<="
AST_GE = ">="
AST_NE = "!="
AST_NSE = "<=>"
AST_IN = "in"
AST_NOT_IN = "not in"
AST_IS = "is"
AST_IS_NOT = "is not"
AST_LIKE = "like"
AST_NOT_LIKE = "not like"
)
func (node *ComparisonExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("%v %s %v", node.Left, node.Operator, node.Right)
}
func (node *ComparisonExpr) Serialize(runes []rune) []rune {
runes = node.Left.Serialize(runes)
runes = append(runes, ' ')
runes = appendString(runes, node.Operator)
runes = append(runes, ' ')
runes = node.Right.Serialize(runes)
return runes
}
// RangeCond represents a BETWEEN or a NOT BETWEEN expression.
type RangeCond struct {
Operator string
Left ValExpr
From, To ValExpr
}
// RangeCond.Operator
const (
AST_BETWEEN = "between"
AST_NOT_BETWEEN = "not between"
)
func (node *RangeCond) Format(buf *TrackedBuffer) {
buf.Myprintf("%v %s %v and %v", node.Left, node.Operator, node.From, node.To)
}
func (node *RangeCond) Serialize(runes []rune) []rune {
runes = node.Left.Serialize(runes)
runes = append(runes, ' ')
runes = appendString(runes, node.Operator)
runes = append(runes, ' ')
runes = node.From.Serialize(runes)
runes = appendString(runes, " and ")
runes = node.To.Serialize(runes)
return runes
}
// ExistsExpr represents an EXISTS expression.
type ExistsExpr struct {
Subquery *Subquery
}
func (node *ExistsExpr) Format(buf *TrackedBuffer) {
buf.Myprintf("exists %v", node.Subquery)
}
func (node *ExistsExpr) Serialize(runes []rune) []rune {
runes = appendString(runes, "exists ")
runes = node.Subquery.Serialize(runes)
return runes
}
// ValExpr represents a value expression.
type ValExpr interface {
IValExpr()
Expr
}
func (TimestampVal) IValExpr() {}
func (BinaryVal) IValExpr() {}
func (StrVal) IValExpr() {}
func (NumVal) IValExpr() {}
func (ValArg) IValExpr() {}
func (*NullVal) IValExpr() {}
func (*ColName) IValExpr() {}
func (ValTuple) IValExpr() {}
func (*Subquery) IValExpr() {}
func (ListArg) IValExpr() {}
func (*BinaryExpr) IValExpr() {}
func (*UnaryExpr) IValExpr() {}
func (*FuncExpr) IValExpr() {}
func (*CaseExpr) IValExpr() {}
// TimestampVal represents a timestamp value.
type TimestampVal []rune
func (node TimestampVal) Format(buf *TrackedBuffer) {
s := sqltypes.MakeString([]byte(string(node)))
s.EncodeSql(buf)
}
func (node TimestampVal) Serialize(runes []rune) []rune {
runes = append(runes, '\'')
runes = append(runes, node...)
runes = append(runes, '\'')
return runes
}
// BinaryVal represents a binary value.
type BinaryVal []rune
func (node BinaryVal) Format(buf *TrackedBuffer) {
s := sqltypes.MakeString([]byte(string(node)))
s.EncodeSql(buf)
}
func (node BinaryVal) Serialize(runes []rune) []rune {
runes = append(runes, '\'')
runes = append(runes, node...)
runes = append(runes, '\'')
return runes
}
// StrVal represents a string value.
type StrVal []rune
func (node StrVal) Format(buf *TrackedBuffer) {