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add split table ... between ... and syntax #321

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merged 8 commits into from
Jun 5, 2019
Merged

add split table ... between ... and syntax #321

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ba6b0df
add split min max syntax
crazycs520 May 9, 2019
7ab81ea
Merge branch 'master' of https://github.com/pingcap/parser into split…
crazycs520 May 9, 2019
8ef5b9c
Merge branch 'master' of https://github.com/pingcap/parser into split…
crazycs520 May 20, 2019
10bf172
*: add split table syntax
crazycs520 May 20, 2019
8847abc
address comment
crazycs520 Jun 4, 2019
7e50abd
Merge branch 'master' of https://github.com/pingcap/parser into split…
crazycs520 Jun 4, 2019
6d2c7a4
use between and regions syntax
crazycs520 Jun 5, 2019
b1f406a
use lower and upper instead of min/max
crazycs520 Jun 5, 2019
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113 changes: 86 additions & 27 deletions ast/dml.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ var (
_ DMLNode = &SelectStmt{}
_ DMLNode = &ShowStmt{}
_ DMLNode = &LoadDataStmt{}
_ DMLNode = &SplitIndexRegionStmt{}
_ DMLNode = &SplitRegionStmt{}

_ Node = &Assignment{}
_ Node = &ByItem{}
Expand Down Expand Up @@ -2416,60 +2416,119 @@ func (n *FrameBound) Accept(v Visitor) (Node, bool) {
return v.Leave(n)
}

type SplitIndexRegionStmt struct {
type SplitRegionStmt struct {
dmlNode

Table *TableName
IndexName string
Table *TableName
IndexName model.CIStr

SplitOpt *SplitOption
}

type SplitOption struct {
Min []ExprNode
Max []ExprNode
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I think lower and upper are more suitable to describe ranges

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done.

Num int64
ValueLists [][]ExprNode
}

func (n *SplitIndexRegionStmt) Restore(ctx *RestoreCtx) error {
func (n *SplitRegionStmt) Restore(ctx *RestoreCtx) error {
ctx.WriteKeyWord("SPLIT TABLE ")
if err := n.Table.Restore(ctx); err != nil {
return errors.Annotate(err, "An error occurred while restore SplitIndexRegionStmt.Table")
}
ctx.WriteKeyWord(" INDEX ")
ctx.WriteName(n.IndexName)
ctx.WriteKeyWord(" BY ")
for i, row := range n.ValueLists {
if i != 0 {
ctx.WritePlain(",")
}
ctx.WritePlain("(")
for j, v := range row {
if j != 0 {
ctx.WritePlain(",")
}
if err := v.Restore(ctx); err != nil {
return errors.Annotatef(err, "An error occurred while restore SplitIndexRegionStmt.ValueLists[%d][%d]", i, j)
}
}
ctx.WritePlain(")")
if len(n.IndexName.L) > 0 {
ctx.WriteKeyWord(" INDEX ")
ctx.WriteName(n.IndexName.String())
}
return nil
ctx.WritePlain(" ")
err := n.SplitOpt.Restore(ctx)
return err
}

func (n *SplitIndexRegionStmt) Accept(v Visitor) (Node, bool) {
func (n *SplitRegionStmt) Accept(v Visitor) (Node, bool) {
newNode, skipChildren := v.Enter(n)
if skipChildren {
return v.Leave(newNode)
}

n = newNode.(*SplitIndexRegionStmt)
n = newNode.(*SplitRegionStmt)
node, ok := n.Table.Accept(v)
if !ok {
return n, false
}
n.Table = node.(*TableName)
for i, list := range n.ValueLists {
for i, val := range n.SplitOpt.Min {
node, ok := val.Accept(v)
if !ok {
return n, false
}
n.SplitOpt.Min[i] = node.(ExprNode)
}
for i, val := range n.SplitOpt.Max {
node, ok := val.Accept(v)
if !ok {
return n, false
}
n.SplitOpt.Max[i] = node.(ExprNode)
}

for i, list := range n.SplitOpt.ValueLists {
for j, val := range list {
node, ok := val.Accept(v)
if !ok {
return n, false
}
n.ValueLists[i][j] = node.(ExprNode)
n.SplitOpt.ValueLists[i][j] = node.(ExprNode)
}
}
return v.Leave(n)
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}

func (n *SplitOption) Restore(ctx *RestoreCtx) error {
if len(n.ValueLists) == 0 {
ctx.WriteKeyWord("MIN ")
ctx.WritePlain("(")
for j, v := range n.Min {
if j != 0 {
ctx.WritePlain(",")
}
if err := v.Restore(ctx); err != nil {
return errors.Annotatef(err, "An error occurred while restore SplitOption Min")
}
}
ctx.WritePlain(")")

ctx.WriteKeyWord(" MAX ")
ctx.WritePlain("(")
for j, v := range n.Max {
if j != 0 {
ctx.WritePlain(",")
}
if err := v.Restore(ctx); err != nil {
return errors.Annotatef(err, "An error occurred while restore SplitOption Max")
}
}
ctx.WritePlain(")")
ctx.WriteKeyWord(" NUM")
ctx.WritePlainf(" %d", n.Num)
return nil
}
ctx.WriteKeyWord("BY ")
for i, row := range n.ValueLists {
if i != 0 {
ctx.WritePlain(",")
}
ctx.WritePlain("(")
for j, v := range row {
if j != 0 {
ctx.WritePlain(",")
}
if err := v.Restore(ctx); err != nil {
return errors.Annotatef(err, "An error occurred while restore SplitOption.ValueLists[%d][%d]", i, j)
}
}
ctx.WritePlain(")")
}
return nil
}
1 change: 1 addition & 0 deletions misc.go
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Original file line number Diff line number Diff line change
Expand Up @@ -386,6 +386,7 @@ var tokenMap = map[string]int{
"NULL": null,
"NULLS": nulls,
"NUMERIC": numericType,
"NUM": number,
"NVARCHAR": nvarcharType,
"OFFSET": offset,
"ON": on,
Expand Down
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