Snowflake: `CREATE DATABASE` and `COPY INTO` consume the `;`, so the next statement is rejected

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  • #2790 來自 @slopgobblercobbler —— 已關閉,未合併

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Issue 類型
缺陷
描述清晰度
基本清楚
活躍度
活躍
技術堆疊
rust
領域
databases

研究方向

Start by comparing the Snowflake dialect parsing for CREATE DATABASE and COPY INTO with CREATE SCHEMA, which the issue says already handles a following statement. Read the changes from #1939, #1669, and #1786, and check how the open #2438 handles statement endings. Add regression cases for semicolon-separated statements and confirm both statements parse successfully.

由索引模型根據 Issue 內容生成。

描述

Prolific Author Snowflake

With SnowflakeDialect, these fail as soon as another statement follows:

CREATE DATABASE my_db; SELECT 1
  -> sql parser error: Expected: end of statement, found: SELECT at Line: 1, Column: 24
CREATE DATABASE my_db COMMENT = 'x'; SELECT 1
COPY INTO t FROM @stage; SELECT 1
  -> same error (on 0.63.0, COPY INTO gives "Expected: =, found: 1 at Line: 1, Column: 33" instead)
CREATE SCHEMA my_s; SELECT 1
  -> 2 statements (fine)

Each statement parses on its own. CREATE DATABASE my_db; SELECT 1 worked in 0.58.0 and broke in 0.59.0 (#1939); COPY INTO has done this since #1669, which fixed #1519 for a trailing ; only. Same class as #1775 (fixed in #1786). Open PR #2438 makes ->> end these statements but leaves the ; case as is.

Tested on main c45d1f4e (also 0.63.0).

Found with a property-based fuzzer (round trip and statement-separation checks); I used AI assistance for triage and verified every case above.

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