* refactor InsertColumnsSegment's constructor

* inline unnecessary local variable for MySQLTCLVisitor

* inline unnecessary local variable for MySQLDALVisitor

* code style for MySQLDMLVisitor

* code style for MySQLDDLVisitor

* use getter instead of access properties directly

refactor table token and index token, use IdentifierValue to instead of name and quote character (#4241)

* refactor TableAvailable, use IdentifierValue to instead of table name and quote character

* refactor SchemaSegment, use IdentifierValue to instead of name and quote character

* refactor IndexSegment, use IdentifierValue to instead of name and quote character

* refactor ColumnSegment, use IdentifierValue to instead of name and quote character

* decouple FromTableSegment and TableAvailable

* add fromTableSegment and tableSegment to allSQLSegments

* add visitor for setvariable

* fix for code style

* 1.fix set role sql grammar error
2.add set defaulr role grammar visit and xml test

* supplement xml role

* ci test error

* 1.add test object to map and make setRole,setDefaultRole different.
2.modify java file commiter name

* code clean

* add revoke dcl visitor parse and test unit

Orchestration 5.x

copy shardingsphere-doc to shardingsphere/docs

Merge pull request #4221 from sunbufu/orchestration-5.x

* Add new class OtherLiteralValue to decouple StringLiteralValue

* move substring delimiter of string into StringLiteralValue

* add more tests for order-by and or sql

* support using limit pagination

Revert "Merger master into orchestration 5.x"

This reverts commit 88de2f07.

Merger master into orchestration 5.x

# Conflicts:
#	community/content/contribute/release.cn.md
#	community/content/contribute/release.en.md

* refactor package structure of value ast node

* add interface for LiteralValue

* 1.fix set role sql grammar error
2.add set defaulr role grammar visit and xml test

* supplement xml role

* ci test error

* 1.add test object to map and make setRole,setDefaultRole different.
2.modify java file commiter name

* code clean

* Add IdentifierValue

* Merge branch 'master' into parser

# Conflicts:
#	shardingsphere-sql-parser/shardingsphere-sql-parser-mysql/src/main/java/org/apache/shardingsphere/sql/parser/visitor/MySQLDDLVisitor.java

Add predicateBuilder to deal with predicate related from MySQL dialect to generic parse module (#4206)

* #4182, ignore showLike context in show columns

* #4182, ignore showLike context in show columns

* #4182, ignore showLike context in show columns

* fix #4188

* delete EqualsAndHashCode from sql token

* move order of MySQLVisitor.visitParameterMarker()

* keep same order with MySQLVisitor.visitLiterals() and g4 file

* refactor NumberValue

* refactor BooleanValue

* refactor BooleanValue

* add todo for visitLiterals

* keep same order with MySQLVisitor.visitIdentifier and g4 file

* refactor visitIdentifier

* add todo for visitStringLiterals

* move order of variable_ and scope_ in g4 file

* move scope_ to TCLStatement.g4

* keep same order with visitTableNames and visitColumnsNames for g4 file

* refactor ctx.start and ctx.stop to ctx.getStart() and ctx.Stop()

* inline createSchemaSegment()

* inline createTableSegment()

* keep same order with MySQLVisitor.visitIndexName and g4 file

* keep same order with MySQLVisitor.visitColumnNames and g4 file

* refactor MySQLVisitor.visitExpr()

* refactor MySQLVisitor.visitExpr()

* refactor MySQLVisitor.visitBooleanPrimary()

* inline createCompareSegment

* move order for createInSegment and createBetweenSegment

* move order for createExpressionSegment

* move order for visitOrderByClause

* refactor visitFunctionCall

* move order for createAggregationSegment

* refactor createAggregationSegment

* merge mergePredicateSegment