apache / shardingsphere / 944

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jenkins

Parse constraint for ALTER TABLE  (#4508)

* add AlterTableStatement.addedConstraintDefinitions

* adjust rule seq for mysql ddl

* refactor AlterTableStatement.addedColumnDefinitions' type from ColumnDefinitionSegment to AddColumnDefinitionSegment

* refactor AddColumnDefinitionSegment.columnDefinition to columnDefinitions

* add AlterDefinitionSegment

* add AlterTableStatement.addConstraintDefinitions

* refactor alter table for add constraint of MySQLDDLVisitor

* refactor alter table for add constraint of MySQLDDLVisitor

* refactor alter table for modify column of MySQLDDLVisitor

* refactor alter table for drop column of MySQLDDLVisitor

* refactor alter table of Oracle

* refactor alter table of SQLServer

* refactor alter table of PostgreSQL

* refactor alter table of SQL92

* for checkstyle

* fix new test cases

183 of 183 new or added lines in 6 files covered. (100.0%)

10619 of 17979 relevant lines covered (59.06%)

145.48 hits per line