jointable

问题 Hi I want to get data from database, I am using join query but I have got this error: QueryException in Connection.php line 673: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'surat_masuk' (SQL: select jenis_surat . jenis_surat , surat_masuk . nomor_surat , surat_masuk . perihal , surat_masuk . tanggal_publish from surat_masuk inner join jenis_surat on id_jenis_surat = jenis_surat . id_jenis_surat inner join surat_masuk on id_jenis_surat = surat_masuk . id

问题 Hi I want to get data from database, I am using join query but I have got this error: QueryException in Connection.php line 673: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'surat_masuk' (SQL: select jenis_surat . jenis_surat , surat_masuk . nomor_surat , surat_masuk . perihal , surat_masuk . tanggal_publish from surat_masuk inner join jenis_surat on id_jenis_surat = jenis_surat . id_jenis_surat inner join surat_masuk on id_jenis_surat = surat_masuk . id

问题 Hi I want to get data from database, I am using join query but I have got this error: QueryException in Connection.php line 673: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'surat_masuk' (SQL: select jenis_surat . jenis_surat , surat_masuk . nomor_surat , surat_masuk . perihal , surat_masuk . tanggal_publish from surat_masuk inner join jenis_surat on id_jenis_surat = jenis_surat . id_jenis_surat inner join surat_masuk on id_jenis_surat = surat_masuk . id

问题 Hi I want to get data from database, I am using join query but I have got this error: QueryException in Connection.php line 673: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'surat_masuk' (SQL: select jenis_surat . jenis_surat , surat_masuk . nomor_surat , surat_masuk . perihal , surat_masuk . tanggal_publish from surat_masuk inner join jenis_surat on id_jenis_surat = jenis_surat . id_jenis_surat inner join surat_masuk on id_jenis_surat = surat_masuk . id

问题 Hi I want to get data from database, I am using join query but I have got this error: QueryException in Connection.php line 673: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'surat_masuk' (SQL: select jenis_surat . jenis_surat , surat_masuk . nomor_surat , surat_masuk . perihal , surat_masuk . tanggal_publish from surat_masuk inner join jenis_surat on id_jenis_surat = jenis_surat . id_jenis_surat inner join surat_masuk on id_jenis_surat = surat_masuk . id

问题 I have the following setup. 1 product has many product_types. many product_types have 1 type. A HABTM relationship from my understanding of the docs. My models are class Product < ApplicationRecord has_and_belongs_to_many :types end class Type < ApplicationRecord has_and_belongs_to_many :products end I have a join table migration as such class CreateJoinTableProductTypes < ActiveRecord::Migration[5.1] def change create_join_table :products, :types do |t| t.index :product_id t.index :type_id

问题 I want to save severel Roles for a User. For that purpose I have created a Jointable user2role,which assigns every user id an role id. So far everything works finely. Additionally, I want to save some columns in the join table, for example the the last last_modifying_date (see table defintion below). I dont want to create an additional controller for user2role. I want to solve it by extending the current mapping definiton. Thank you for your help! The mapping file of User (User.hbm.xml)

问题 I have the following (simplified) situation: Fields for TABLE A: ID COMMONID Fields for TABLE AB: AID BID COMMONID Fields for TABLE B: ID COMMONID and want to map it with entities using a OneToMany like this (in the master class mapped on table A): @OneToMany(cascade = CascadeType.ALL, orphanRemoval = false, fetch = FetchType.LAZY) @JoinTable(name = "AB", joinColumns= { @JoinColumn(name = "AID", referencedColumnName="ID"), @JoinColumn(name = "COMMONID", referencedColumnName="COMMONID")},

问题 I used this code, but only one table's data selected. I need to select all fields from two tables: $options['joins'] = array( array('table' => 'tbl_users', 'alias' => 'Users', 'type' => 'INNER', 'foreignKey' => 'assigned_by', 'fields' => 'Users.user', 'conditions' => array( 'TravancoAdmin.assigned_by = Users.id' ) ) ); $options['conditions'] = array( 'TravancoAdmin.id' => $task_id); $result = $this->find('all', $options); return $result ? $result : 1; How can i get all fields from two tables?

问题 I have the model below : an article can have some tags and a tag can be on some articles. So it is a many-to-many relationship with 3 tables : ARTICLE ARTICLE_TAG TAG When I delete a tag, I want to delete : the tag in TAG all relations between the tag and the articles tagged in ARTICLE_TAG But I don't want to delete the articles in ARTICLE of course. How can I do that ? I try this, but it doesn't work : Session session = HibernateUtil.getSessionFactory().getCurrentSession(); for (Article