ZhangCheng

Refactor the lock implementation in GlobalClockTransactionHook

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## Feature Request Refactor the lock implementation in GlobalClockTransactionHook. 1. Avoid using registry-based locks (e.g., ZooKeeper) because acquiring a lock might timeout in beforeCommit, but the afterCommit could still attempt...

Support parsing MySQL stored procedure syntax - part 7

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

Support parsing MySQL stored procedure syntax - part 8

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

Support parsing MySQL stored procedure syntax - part 4

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

Support parsing MySQL stored procedure syntax - part 3

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

Support parsing MySQL stored procedure syntax - part 2

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

Support parsing MySQL stored procedure syntax - part 0

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# Background Hi community, ShardingSphere's parser engine enables users to parse SQL into AST (Abstract Syntax Tree) and convert it into SQLStatement objects. This issue focuses on enhancing MySQL stored...

## Bug Report After removing the restriction on executing DDL within PostgreSQL transactions in ShardingSphere(`org.apache.shardingsphere.proxy.backend.connector.ProxySQLExecutor#checkExecutePrerequisites`), the following issue is observed: When a DDL statement that modifies metadata (e.g., ALTER TABLE...

## Bug Report Oracle SQL parser fails to extract REGEXP_SUBSTR parameters correctly, causing NumberFormatException ### Which version of ShardingSphere did you use? Master. ### Which project did you use? ShardingSphere-JDBC...