Review the parsing rule for DDL

[tristaZero]

Fixes #2276 .

[coveralls]

Pull Request Test Coverage Report for Build 7811

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 67 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.1%) to 55.582%

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Files with Coverage Reduction	New Missed Lines	%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/extractor/impl/dml/TableReferencesExtractor.java	3	0.0%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/filler/common/dml/WhereFiller.java	6	0.0%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/filler/common/dql/SelectItemFiller.java	7	0.0%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/filler/encrypt/dml/EncryptSetAssignmentsFiller.java	11	0.0%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/filler/common/dql/OrderItemBuilder.java	13	0.0%
sharding-core/sharding-core-parse/sharding-core-parse-common/src/main/java/org/apache/shardingsphere/core/parse/antlr/filler/sharding/dml/ShardingOrPredicateFiller.java	27	0.0%

Totals
Change from base Build 7807:	0.1%
Covered Lines:	8717
Relevant Lines:	15683

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💛 - Coveralls