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[SQL Definition Collation][SQLServer]Collate the g4 files of SQL definitions

See original GitHub issue

Hi community,

This issue is to collate the SQL definitions of SQLServer. Therefore, we can support parsing more SQLs. We need your interaction! If you

  1. Be familiar with g4 file of Antlr (The grammars are RegularExpression-like)
  2. Understand the SQLServer grammars

then welcome!

Background

How is a SQL parsed? SQL definition file ->(Parse to) AST ->(Visit it)
SQLStatment

Process

  1. Compare SQL definitions in Oficial SQL Doc and ShardingSphere SQL Doc
  2. If there is any difference in ShardingSphere SQL Doc, please correct them referring to Official SQL Doc
  3. Run mvn install the current_file_module
  4. Check whether there are any exceptions. If indeed, please fix them. (Especially xxxVisitor.class)
  5. Add new corresponding SQL case in SQL Cases and expected parsed result in Expected Statment XML
  6. Run SQLParserParameterizedTest to make sure no exceptions.

Notice

1.Left recursion can not work well in Antlr4,

a
  : b
  | a b
  ;
b
  : a c
  ;
c
  : ...
  ;

you can consider the following one,

a
  : b*
  ;
b
  : a c
  ;
c
  : ...
  ;
  1. Here is a Chinese version for reference.

subtask

1、DML

2、DDL-ALTER

3、DDL-CREATE

4、DDL-DROP

5、DCL

6、TCL

7、DAL

Issue Analytics

  • State:open
  • Created 3 years ago
  • Comments:17 (16 by maintainers)

github_iconTop GitHub Comments

2reactions
ThanoshanMVcommented, Nov 27, 2021

Hi @jingshanglu, @tristaZero, @Icesource

I completed TCL and DAL statements. Please refer to the submitted PRs. If there is anything to be changed, please let me know.

  1. For TCL statements:
  1. For DAL statements:

Next, I’ll try to work on DCL statements.

1reaction
github-actions[bot]commented, Oct 8, 2022

Hello , this issue has not received a reply for several days. This issue is supposed to be closed.

Read more comments on GitHub >

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