fix: add support to negative numbers(- unary operator)

packages/nocodb-sdk/src/lib/formulaHelpers.ts

@@ -1777,11 +1777,14 @@ export async function validateFormulaAndExtractTreeWithType({
         res.dataType = FormulaDataTypes.STRING;
       }
     } else if (parsedTree.type === JSEPNode.UNARY_EXP) {
+      // only support unary +/-
+      if (!['-', '+'].includes(parsedTree.operator)) {
         throw new FormulaError(
           FormulaErrorType.NOT_SUPPORTED,
           {},
-        'Unary expression is not supported'
+          `Unary expression '${parsedTree.operator}' is not supported`
         );
+      }
     } else if (parsedTree.type === JSEPNode.BINARY_EXP) {
       res.left = await validateAndExtract(parsedTree.left);
       res.right = await validateAndExtract(parsedTree.right);