fix(nocodb): handle existing formula select qb failure

packages/nocodb/src/lib/db/sql-data-mapper/lib/sql/BaseModelSqlv2.ts

@@ -1206,14 +1206,34 @@ class BaseModelSqlv2 {
   private async getSelectQueryBuilderForFormula(column: Column<any>) {
     const formula = await column.getColOptions<FormulaColumn>();
     if (formula.error) throw new Error(`Formula error: ${formula.error}`);
-    const selectQb = await formulaQueryBuilderv2(
+    const qb = await formulaQueryBuilderv2(
       formula.formula,
       null,
       this.dbDriver,
       this.model
     );
 
-    return selectQb;
+    try {
+      // dry run the existing qb.builder to see if it will break the grid view or not
+      // if so, set formula error and show empty selectQb instead
+      await this.dbDriver(this.tnPath)
+        .select(qb.builder)
+        .as(sanitize(column.title));
+      // clean the previous formula error if the formula works this time
+      if (formula.error) {
+        await FormulaColumn.update(formula.id, {
+          error: null,
+        });
+      }
+    } catch (e) {
+      console.error(e);
+      // add formula error to show in UI
+      await FormulaColumn.update(formula.id, {
+        error: e.message,
+      });
+      throw new Error(`Formula error: ${e.message}`);
+    }
+    return qb;
   }
 
   async getProto() {
@@ -1502,7 +1522,6 @@ class BaseModelSqlv2 {
               const selectQb = await this.getSelectQueryBuilderForFormula(
                 column
               );
-              // todo:  verify syntax of as ? / ??
               qb.select(
                 this.dbDriver.raw(`?? as ??`, [
                   selectQb.builder,
@@ -1510,7 +1529,10 @@ class BaseModelSqlv2 {
                 ])
               );
             } catch {
-              continue;
+              // return dummy select
+              qb.select(
+                this.dbDriver.raw(`'ERR' as ??`, [sanitize(column.title)])
+              );
             }
           }
           break;