Make composite UNIQUE constraint violation error message slightly more readable

src/errors/unique-constraint-violation.js

@@ -25,7 +25,7 @@ module.exports = {
 
         if (columnValue.includes(",")) {
             columns = splitValues(columnValue);
-            messageColumn = `columns ${columns.map(column => `'${column}'`).join(", ")}`;
+            messageColumn = `columns [${columns.map(column => `'${column}'`).join(", ")}]`;
             isComposite = true;
         } else {
             column = columnValue;
@@ -35,7 +35,7 @@ module.exports = {
 
         if (valueValue.includes(",")) {
             values = splitValues(valueValue);
-            messageValue = `Values ${values.map(value => `'${value}'`).join(", ")} already exist`;
+            messageValue = `Values [${values.map(value => `'${value}'`).join(", ")}] already exist`;
         } else {
             value = valueValue;
             messageValue = `Value '${value}' already exists`;