diff --git a/package-lock.json b/package-lock.json
index b87a04b..c53e173 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dblang",
-  "version": "0.7.0",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dblang",
-      "version": "0.7.0",
+      "version": "0.9.0",
       "license": "UNLICENSED",
       "dependencies": {
         "mariadb": "^3.0.2",
diff --git a/package.json b/package.json
index 8c19890..273ef6d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dblang",
-  "version": "0.8.1",
+  "version": "0.9.0",
   "description": "",
   "main": "dist/db.js",
   "types": "dist/db.d.ts",
diff --git a/src/db.ts b/src/db.ts
index a676ab3..f7b74fd 100644
--- a/src/db.ts
+++ b/src/db.ts
@@ -104,13 +104,13 @@ export class Attribute {
                 [this]
             ))
         }
-        if (ops.foreginKey != null) {
+        if (ops.foreignKey != null) {
             table.addConstraint(new foreignConstraint(
-                table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + "_" + name + "_foreign_constraint_to_" + ops.foreginKey.link.name,
+                table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + "_" + name + "_foreign_constraint_to_" + ops.foreignKey.link.name,
                 [this],
-                [ops.foreginKey.link],
-                ops.foreginKey.onDelete,
-                ops.foreginKey.onUpdate
+                [ops.foreignKey.link],
+                ops.foreignKey.onDelete,
+                ops.foreignKey.onUpdate
             ));
         }
     }
@@ -170,7 +170,8 @@ export class Table {
         }));
     }
     addConstraint(c: Constraint) {
-        c.check(this);
+        let check = c.check(this);
+        if(typeof check == "string") throw new Error(check);
         this.dbLangConstrains.push(c);
     }
     createAlias(name: string) {
diff --git a/src/dbStructure.ts b/src/dbStructure.ts
index f2a693b..7f4c7cd 100644
--- a/src/dbStructure.ts
+++ b/src/dbStructure.ts
@@ -1,6 +1,7 @@
 import { Attribute, Table } from "./db.js";
 import { Handler } from "./defaultHandler.js";
 import { QueryBuilder } from "./query.js";
+import { sha256 } from "./tools.js";
 import { allModifierInput, joinElements, joinType, onAction, primaryData, serializeReturn } from "./types.js";
 
 export class Datatype {
@@ -110,6 +111,7 @@ export class checkConstraint implements Constraint {
     checkQuery: BooleanModifier;
     name: string;
     constructor(name: string, check: BooleanModifier) {
+        if (name.length > 64) name = sha256(name);
         this.name = name.toLowerCase();
         this.checkQuery = check;
     }
@@ -125,6 +127,7 @@ export class uniqueConstraint implements Constraint {
     name: string;
     attrs: Attribute[];
     constructor(name: string, attrs: Attribute[]) {
+        if (name.length > 64) name = sha256(name);
         this.name = name.toLowerCase();
         this.attrs = attrs;
     }
@@ -147,6 +150,7 @@ export class foreignConstraint implements Constraint {
     onUpdate: onAction;
     onDelete: onAction;
     constructor(name: string, from: Attribute[], to: Attribute[], onDelete: onAction = onAction.nothing, onUpdate: onAction = onAction.nothing) {
+        if (name.length > 64) name = sha256(name);
         this.name = name.toLowerCase();
         this.fromAttrs = from;
         this.toAttrs = to;
@@ -160,7 +164,7 @@ export class foreignConstraint implements Constraint {
         let table = this.toAttrs[0].table;
         for (let i = 0; i < this.toAttrs.length; i++) {
             if (table != this.toAttrs[i].table) return "Referenced Attributes must be in one Table.";
-            if (this.toAttrs[i].ops.primaryKey) return "Can not reference non primary keys.";
+            if (!this.toAttrs[i].ops.primaryKey) return "Can not reference non primary keys.";
         }
         for (let i = 0; i < this.fromAttrs.length; i++) {
             if (this.fromAttrs[i].table != t) return "Referencing Attributes must be in host Table.";
diff --git a/src/defaultHandler.ts b/src/defaultHandler.ts
index 076fd4b..146bb4d 100644
--- a/src/defaultHandler.ts
+++ b/src/defaultHandler.ts
@@ -121,6 +121,21 @@ export class Handler {
             return found == fromAttrs.length && found == toAttrs.length;
         }
 
+        function freeForUpdate(attr: string, table: string, start = false) {
+            for (let i = 0; i < key.length; i++) {
+                const k = key[i];
+                if (
+                    ((k.REFERENCED_TABLE_NAME ?? k.referenced_table_name) == table
+                    && (k.REFERENCED_COLUMN_NAME ?? k.referenced_column_name).toLowerCase() == attr.toLowerCase())
+                    || (start && (k.TABLE_NAME ?? k.table_name) == table
+                    && (k.COLUMN_NAME ?? k.column_name).toLowerCase() == attr.toLowerCase() && (k.REFERENCED_COLUMN_NAME ?? k.referenced_column_name) != null)
+                ) {
+                    del.appendEnding(handler.querys.removeForeignKey(handler, (k.TABLE_NAME ?? k.table_name), (k.CONSTRAINT_NAME ?? k.constraint_name)));
+                    key.splice(i--, 1);
+                }
+            }
+        }
+
         //delete check and unused/false(unique, foreign) constraints
         for (let i = 0; i < constraints.length; i++) {
             const c = constraints[i];
@@ -130,7 +145,19 @@ export class Handler {
                 if (
                     (typeof tableData[c.TABLE_NAME ?? c.table_name] == "undefined" && deleteInDB)
                     || !checkUniqueIsVaild((c.CONSTRAINT_NAME ?? c.constraint_name), (c.TABLE_NAME ?? c.table_name))
-                ) del.appendEnding(handler.querys.removeUnique(handler, (c.TABLE_NAME ?? c.table_name), (c.CONSTRAINT_NAME ?? c.constraint_name)));
+                ) {
+                    const uTName = (c.TABLE_NAME ?? c.table_name);
+                    const uCName = (c.CONSTRAINT_NAME ?? c.constraint_name);
+                    for (let j = 0; j < key.length; j++) {
+                        if (
+                            (key[j].CONSTRAINT_NAME ?? key[j].constraint_name) == uCName
+                            && (key[j].TABLE_NAME ?? key[j].table_name) == uTName
+                        ) {
+                            freeForUpdate((key[j].COLUMN_NAME ?? key[j].column_name), uTName, true);
+                        }
+                    }
+                    del.appendEnding(handler.querys.removeUnique(handler, uTName, uCName));
+                }
             } else if ((c.CONSTRAINT_TYPE ?? c.constraint_type) == "FOREIGN KEY") {
                 if (
                     (typeof tableData[c.TABLE_NAME ?? c.table_name] == "undefined" && deleteInDB)
@@ -143,19 +170,6 @@ export class Handler {
             if (typeof tableData[allTables[i]] == "undefined") del.appendEnding(handler.querys.deleteTable(handler, allTables[i]));
         }
 
-        function freeForUpdate(attr: string, table: string) {
-            for (let i = 0; i < key.length; i++) {
-                const k = key[i];
-                if (
-                    (k.REFERENCED_TABLE_NAME ?? k.referenced_table_name) == table
-                    && (k.REFERENCED_COLUMN_NAME ?? k.referenced_column_name).toLowerCase() == attr.toLowerCase()
-                ) {
-                    del.appendEnding(handler.querys.removeForeignKey(handler, (k.TABLE_NAME ?? k.table_name), (k.CONSTRAINT_NAME ?? k.constraint_name)));
-                    key.splice(i--, 1);
-                }
-            }
-        }
-
         //create tables
         for (let i = 0; i < db.tables.length; i++) {
             const table = db.tables[i];
@@ -205,7 +219,6 @@ export class Handler {
                     if (attrData != null) {
                         if ((attrData.Key == "PRI") != (!!a.ops.primaryKey)) {
                             freeForUpdate(a.name, a.table.dbLangTableName);
-                            console.log("206");
                             changePrimary = true;
                         }
                     }
diff --git a/src/types.ts b/src/types.ts
index d1c7b03..e7d4f9f 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -20,7 +20,7 @@ export type attributeSettings = {
     default?: primaryData,
     notNull?: boolean
     primaryKey?: boolean,
-    foreginKey?: {
+    foreignKey?: {
         link: Attribute,
         onDelete?: onAction,
         onUpdate?: onAction
@@ -35,7 +35,7 @@ export type extendedAttributeSettings = {
     default?: primaryData,
     notNull?: boolean
     primaryKey?: boolean,
-    foreginKey?: {
+    foreignKey?: {
         link: Attribute,
         onDelete?: onAction,
         onUpdate?: onAction