♲ Improve error messaging for unexpected conditions in SQL parser

Author: hoshinotsuyoshi

frontend/packages/db-structure/src/parser/sql/postgresql/index.ts

@@ -33,7 +33,9 @@ export const processor: Processor = async (sql: string) => {
     const { parse_tree, error: parseError } = await parse(chunk)
 
     if (parse_tree.stmts.length > 0 && parseError !== null) {
-      throw new Error('UnexpectedCondition')
+      throw new Error(
+        'UnexpectedCondition. parse_tree.stmts.length > 0 && parseError !== null',
+      )
     }
 
     if (parseError !== null) {

frontend/packages/db-structure/src/parser/sql/postgresql/processSQLInChunks.ts

@@ -70,7 +70,7 @@ export const processSQLInChunks = async (
       } else if (readOffset !== null) {
         const lineNumber = getLineNumber(chunk, readOffset)
         if (lineNumber === null) {
-          throw new Error('UnexpectedCondition')
+          throw new Error('UnexpectedCondition. lineNumber === null')
         }
         i += lineNumber
         break