feat: add investigation script for structural differences analysis

Co-Authored-By: Dan Lynch <[email protected]>

Author: devin-ai-integration[bot]

packages/transform/investigate_structure.js

@@ -0,0 +1,35 @@
+const parse = require('@pgsql/parser').default;
+
+const testSQL = `DROP TABLE num_data;`;
+
+console.log("Investigating structural differences between PG13 and PG14...\n");
+
+try {
+  const result13 = parse(testSQL, { version: '13' });
+  const result14 = parse(testSQL, { version: '14' });
+  
+  console.log("=== PG13 Structure ===");
+  console.log(JSON.stringify(result13, null, 2));
+  
+  console.log("\n=== PG14 Structure ===");
+  console.log(JSON.stringify(result14, null, 2));
+  
+  const json13 = JSON.stringify(result13);
+  const json14 = JSON.stringify(result14);
+  
+  console.log("\n=== String Node Analysis ===");
+  const stringMatches13 = json13.match(/"String":\s*{[^}]*}/g) || [];
+  const stringMatches14 = json14.match(/"String":\s*{[^}]*}/g) || [];
+  
+  console.log("PG13 String nodes:", stringMatches13);
+  console.log("PG14 String nodes:", stringMatches14);
+  
+  console.log("\n=== Field Analysis ===");
+  console.log("PG13 has 'str' field:", json13.includes('"str":'));
+  console.log("PG14 has 'str' field:", json14.includes('"str":'));
+  console.log("PG13 has 'sval' field:", json13.includes('"sval":'));
+  console.log("PG14 has 'sval' field:", json14.includes('"sval":'));
+  
+} catch (error) {
+  console.log("Parse error:", error.message);
+}