fix(oracle): preserve hash characters in SQL identifiers

apps/desktop/src/lib/__tests__/sql/sqlStatementRanges.spec.ts

@@ -470,6 +470,22 @@ describe("splitSqlStatementRanges", () => {
     expect(rangeSqlTexts(splitSqlStatementRanges(sql))).toEqual(["SELECT 1", "SELECT 2"]);
   });
 
+  it("preserves hash characters in Oracle identifiers", () => {
+    const sql = "select a.FILE_ID,a.BLOCK_ID,a.BLOCKS,b.NAME from dba_extents a,v$datafile b where a.FILE_ID=b.FILE#";
+    expect(rangeSqlTexts(splitSqlStatementRanges(sql, "oracle"))).toEqual([sql]);
+  });
+
+  it("preserves hash characters in Oracle-family identifiers", () => {
+    const sql = "select 1 from dba_extents where FILE_ID = b.FILE#";
+    expect(rangeSqlTexts(splitSqlStatementRanges(sql, "dameng"))).toEqual([sql]);
+    expect(rangeSqlTexts(splitSqlStatementRanges(sql, "oceanbase-oracle"))).toEqual([sql]);
+  });
+
+  it("keeps hash line comments scoped to MySQL", () => {
+    const sql = "SELECT 1 # comment;\n;\nSELECT 2";
+    expect(rangeSqlTexts(splitSqlStatementRanges(sql, "mysql"))).toEqual(["SELECT 1", "SELECT 2"]);
+  });
+
   it("keeps SQL Server temporary table names instead of treating them as hash comments", () => {
     const sql = "DROP TABLE IF EXISTS #Temp;\nSELECT * FROM ##GlobalTemp;";
     expect(rangeSqlTexts(splitSqlStatementRanges(sql, "sqlserver"))).toEqual(["DROP TABLE IF EXISTS #Temp", "SELECT * FROM ##GlobalTemp"]);

apps/desktop/src/lib/sql/sqlStatementRanges.ts

@@ -1409,7 +1409,10 @@ function startsLineComment(sql: string, pos: number, databaseType?: DatabaseType
 }
 
 function startsHashLineComment(sql: string, pos: number, databaseType?: DatabaseType, parameterOptions?: SqlParameterOptions): boolean {
-  if (databaseType === "sqlserver" || sql[pos] !== "#") return false;
+  // `#` is a MySQL-family line-comment marker. Oracle-family engines also allow
+  // it in unquoted identifiers (for example `V$DATAFILE.FILE#`), so treating it
+  // as a comment there truncates otherwise valid statements.
+  if ((databaseType !== undefined && ORACLE_LIKE_PL_SQL_DATABASES.has(databaseType)) || databaseType === "sqlserver" || sql[pos] !== "#") return false;
   return readSqlBracedParameterAt(sql, pos, parameterOptions)?.syntax !== "mybatis";
 }