feat: isolate student SQL output and add result-row parsing

src/composables/sqlTable.ts

@@ -1,5 +1,10 @@
 import { ref } from "vue"
-import { buildSetupSql, defaultSqlTableId, sqlTables } from "../data/sqlTables"
+import {
+  buildSetupSql,
+  defaultSqlTableId,
+  sqlTables,
+  type SqlColumn,
+} from "../data/sqlTables"
 
 export const selectedTableId = ref(defaultSqlTableId)
 
@@ -12,5 +17,27 @@ export function buildSqlScript(studentSql: string) {
     sqlTables.find((item) => item.id === selectedTableId.value) ??
     sqlTables[0]
   const normalizedSql = studentSql.trim().replace(/;?\s*$/, ";")
-  return `${buildSetupSql(table)}\n\n${normalizedSql}\n\nSELECT * FROM ${table.tableName};`
+  return [
+    buildSetupSql(table),
+    ".output /dev/null",
+    normalizedSql,
+    ".output stdout",
+    `SELECT * FROM ${table.tableName};`,
+  ].join("\n\n")
+}
+
+export function parseResultRows(
+  output: string,
+  columns: SqlColumn[],
+): Record<string, string | number>[] {
+  return output
+    .split("\n")
+    .map((line) => line.trim())
+    .filter(Boolean)
+    .map((line) => {
+      const cells = line.split("|")
+      return Object.fromEntries(
+        columns.map((column, index) => [column.name, cells[index] ?? ""]),
+      )
+    })
 }