sqlparser

从vitess复制过来的，添加解析ddl相关语句

Name		Name	Last commit message	Last commit date
Latest commit History 19 Commits
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
analyzer.go		analyzer.go
analyzer_test.go		analyzer_test.go
ast.go		ast.go
ast_test.go		ast_test.go
comments.go		comments.go
comments_test.go		comments_test.go
encodable.go		encodable.go
encodable_test.go		encodable_test.go
impossible_query.go		impossible_query.go
normalizer.go		normalizer.go
normalizer_test.go		normalizer_test.go
parse_next_test.go		parse_next_test.go
parse_test.go		parse_test.go
parsed_query.go		parsed_query.go
parsed_query_test.go		parsed_query_test.go
precedence_test.go		precedence_test.go
project.ini		project.ini
redact_query.go		redact_query.go
redact_query_test.go		redact_query_test.go
sql.go		sql.go
sql.y		sql.y
token.go		token.go
token_test.go		token_test.go
tracked_buffer.go		tracked_buffer.go
truncate_query.go		truncate_query.go

Provide feedback