diff --git a/src/ModelCustomization.ts b/src/ModelCustomization.ts
index 10edab1..8c12c82 100644
--- a/src/ModelCustomization.ts
+++ b/src/ModelCustomization.ts
@@ -21,11 +21,20 @@ export default function modelCustomizationPhase(
     } else {
         namingStrategy = new NamingStrategy();
     }
-    let retVal = applyNamingStrategy(namingStrategy, dbModel);
+    let retVal = removeColumnsInRelation(dbModel);
+    retVal = applyNamingStrategy(namingStrategy, dbModel);
     retVal = addImportsAndGenerationOptions(retVal, generationOptions);
     retVal = removeColumnDefaultProperties(retVal, defaultValues);
     return retVal;
 }
+function removeColumnsInRelation(dbModel: Entity[]): Entity[] {
+    dbModel.forEach(entity => {
+        entity.columns = entity.columns.filter(
+            col => !col.isUsedInRelation || col.primary
+        );
+    });
+    return dbModel;
+}
 function removeColumnDefaultProperties(
     dbModel: Entity[],
     defaultValues: DataTypeDefaults
diff --git a/src/drivers/AbstractDriver.ts b/src/drivers/AbstractDriver.ts
index d27b212..47dfe9e 100644
--- a/src/drivers/AbstractDriver.ts
+++ b/src/drivers/AbstractDriver.ts
@@ -88,6 +88,8 @@ export default abstract class AbstractDriver {
                 ) &&
                 entity.relations[0].relatedTable !==
                     entity.relations[1].relatedTable &&
+                entity.relations[0].joinColumnOptions!.length ===
+                    entity.relations[1].joinColumnOptions!.length &&
                 entity.columns.length ===
                     entity.columns.filter(c => c.primary).length &&
                 entity.columns
@@ -315,16 +317,12 @@ export default abstract class AbstractDriver {
             );
             isOneToMany = !index;
 
-            ownerEntity.columns = ownerEntity.columns.filter(
-                v =>
-                    !relationTmp.ownerColumns.some(u => u === v.tscName) ||
-                    v.primary
-            );
-            relationTmp.relatedTable.columns = relationTmp.relatedTable.columns.filter(
-                v =>
-                    !relationTmp.relatedColumns.some(u => u === v.tscName) ||
-                    v.primary
-            );
+            ownerColumns.forEach(column => {
+                column.isUsedInRelation = true;
+            });
+            relatedColumns.forEach(column => {
+                column.isUsedInRelation = true;
+            });
             let fieldName = "";
             if (ownerColumns.length === 1) {
                 fieldName = TomgUtils.findNameForNewField(
diff --git a/src/drivers/MssqlDriver.ts b/src/drivers/MssqlDriver.ts
index 4b639fa..4adf75e 100644
--- a/src/drivers/MssqlDriver.ts
+++ b/src/drivers/MssqlDriver.ts
@@ -226,7 +226,8 @@ WHERE TABLE_TYPE='BASE TABLE' and TABLE_SCHEMA in (${schema}) AND TABLE_CATALOG
                             default: defaultValue,
                             options,
                             tscName,
-                            tscType
+                            tscType,
+                            isUsedInRelation: false
                         });
                     }
                 });
diff --git a/src/drivers/MysqlDriver.ts b/src/drivers/MysqlDriver.ts
index 75aab4a..44b5acd 100644
--- a/src/drivers/MysqlDriver.ts
+++ b/src/drivers/MysqlDriver.ts
@@ -257,7 +257,8 @@ export default class MysqlDriver extends AbstractDriver {
                             default: defaultValue,
                             options,
                             tscName,
-                            tscType
+                            tscType,
+                            isUsedInRelation: false
                         });
                     }
                 });
diff --git a/src/drivers/OracleDriver.ts b/src/drivers/OracleDriver.ts
index 38cf79b..16b255c 100644
--- a/src/drivers/OracleDriver.ts
+++ b/src/drivers/OracleDriver.ts
@@ -208,7 +208,8 @@ export default class OracleDriver extends AbstractDriver {
                             default: defaultValue,
                             options,
                             tscName,
-                            tscType
+                            tscType,
+                            isUsedInRelation: false
                         });
                     }
                 });
diff --git a/src/drivers/PostgresDriver.ts b/src/drivers/PostgresDriver.ts
index c34402f..0aae984 100644
--- a/src/drivers/PostgresDriver.ts
+++ b/src/drivers/PostgresDriver.ts
@@ -159,7 +159,8 @@ export default class PostgresDriver extends AbstractDriver {
                             default: defaultValue,
                             options,
                             tscName,
-                            tscType
+                            tscType,
+                            isUsedInRelation: false
                         });
                     }
                 });
diff --git a/src/drivers/SqliteDriver.ts b/src/drivers/SqliteDriver.ts
index 64ce684..1d07aba 100644
--- a/src/drivers/SqliteDriver.ts
+++ b/src/drivers/SqliteDriver.ts
@@ -226,7 +226,8 @@ export default class SqliteDriver extends AbstractDriver {
                             default: defaultValue,
                             options,
                             tscName,
-                            tscType
+                            tscType,
+                            isUsedInRelation: false
                         });
                     }
                 });
diff --git a/src/models/Column.ts b/src/models/Column.ts
index bde92ce..b14fd41 100644
--- a/src/models/Column.ts
+++ b/src/models/Column.ts
@@ -3,7 +3,8 @@ import { ColumnType } from "typeorm";
 export type Column = {
     tscType: string;
     tscName: string;
-    type: ColumnType | string; // todo: remove ?
+    type: ColumnType | string; // TODO: remove ?
+    isUsedInRelation: boolean; // TODO: move to separate object/calulate when us
 
     primary?: boolean;
     generated?: true | "increment" | "uuid";
diff --git a/test/drivers/MssqlDriver.test.ts b/test/drivers/MssqlDriver.test.ts
index bfa577f..c7a5a2d 100644
--- a/test/drivers/MssqlDriver.test.ts
+++ b/test/drivers/MssqlDriver.test.ts
@@ -106,7 +106,8 @@ describe("MssqlDriver", () => {
             generated: true,
             default: `() => "'a'"`,
             tscName: "name",
-            tscType: "number"
+            tscType: "number",
+            isUsedInRelation: false
         });
 
         const result = await driver.GetCoulmnsFromEntity(
diff --git a/test/modelCustomization/modelCustomization.test.ts b/test/modelCustomization/modelCustomization.test.ts
index 5ba0ff1..207f20c 100644
--- a/test/modelCustomization/modelCustomization.test.ts
+++ b/test/modelCustomization/modelCustomization.test.ts
@@ -21,13 +21,15 @@ describe("Model customization phase", async () => {
                     options: { name: "id" },
                     tscName: "id",
                     tscType: "number",
-                    primary: true
+                    primary: true,
+                    isUsedInRelation: false
                 },
                 {
                     type: "character varying",
                     options: { name: "name" },
                     tscName: "name",
-                    tscType: "string"
+                    tscType: "string",
+                    isUsedInRelation: false
                 }
             ],
             indices: [
@@ -61,19 +63,22 @@ describe("Model customization phase", async () => {
                     options: { name: "id" },
                     tscName: "id",
                     tscType: "number",
-                    primary: true
+                    primary: true,
+                    isUsedInRelation: false
                 },
                 {
                     type: "character varying",
                     options: { name: "title" },
                     tscName: "title",
-                    tscType: "string"
+                    tscType: "string",
+                    isUsedInRelation: false
                 },
                 {
                     type: "character varying",
                     options: { name: "text" },
                     tscName: "text",
-                    tscType: "string"
+                    tscType: "string",
+                    isUsedInRelation: false
                 }
             ],
             indices: [