1.3版本修改，增加删除功能

yzg-util-db/src/main/java/com/yanzuoguang/dao/impl/SqlData.java

@@ -176,9 +176,19 @@ public class SqlData {
      */
     public SqlDataField getField(SqlCond sqlCond) {
         for (SqlDataField sqlDataField : this.sqlDataFields) {
-            if (sqlDataField.getCond().equals(sqlCond)) {
+            SqlCond fieldCond = sqlDataField.getCond();
+            if (fieldCond.equals(sqlCond)) {
                 return sqlDataField;
             }
+            List<String> fromFields = fieldCond.getFields();
+            List<String> toFields = sqlCond.getFields();
+            for (String fromField : fromFields) {
+                for (String toField : toFields) {
+                    if (fromField.equals(toField)) {
+                        return sqlDataField;
+                    }
+                }
+            }
         }
         return null;
     }