I have two tables: table_1 contains a post and table_2 contains all users mapped to post. now I would like to insert post into table1 and I will get a post_id, then I will insert all users who are mapped to post with user_id and post_id.
insert into `post_users_map` (`post_id`,`user_id`,`is_owner`)
select '12345', `user_id`, '0' from `users`
where username in ("A","B","C")
Now I would like to insert ("12345",'123',1) as another row along with select results.
Any suggestion is appreciated and Thanks in Advance.
答案 0 :(得分：2)
只需使用联合添加选择
insert into `post_users_map` (`post_id`,`user_id`,`is_owner`)
select '12345', `user_id`, '0'
from `users` where username in ("A","B","C")
UNION
select '12345', '123, '1'
答案 1 :(得分：1)
仅在选择插入后在值之后添加另一个插入。
Example Class此外，import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import { Button,OverlayTrigger, Tooltip,Popover} from 'react-bootstrap';
//var Modal = require('react-bootstrap-modal') //require('react-bootstrap-modal')
var Modal = require('react-bootstrap').Modal;
//var Button = require('react-bootstrap').Button;
class Example extends React.Component {
constructor(props, context) {
super(props, context);
this.handleShow = this.handleShow.bind(this);
this.handleClose = this.handleClose.bind(this);
this.state = {
show: false,
//popup_index : this.props.popup_index
};
}
handleClose() {
//alert('sdsd');
this.setState({ show : false });
//this.props.handleShow(this.state.show);
}
handleShow() {
this.setState({ show: this.props.show });
}
render() {
const popover = (
<Popover id="modal-popover" title="popover">
very popover. such engagement
</Popover>
);
const tooltip = <Tooltip id="modal-tooltip">wow.</Tooltip>;
return (
<div>
<Modal show={this.props.handleShow} onHide={this.handleClose} >
<Modal.Header closeButton>
<Modal.Title>Modal heading {this.props.popup_id} </Modal.Title>
</Modal.Header>
<Modal.Body>
<h4>Text in a modal</h4>
<p>
Duis mollis, est non commodo luctus, nisi erat porttitor ligula.
</p>
<h4>Popover in a modal</h4>
<p>
there is a{' '}
<OverlayTrigger overlay={popover}>
<a href="#popover">popover</a>
</OverlayTrigger>{' '}
here
</p>
<h4>Tooltips in a modal</h4>
<p>
there is a{' '}
<OverlayTrigger overlay={tooltip}>
<a href="#tooltip">tooltip</a>
</OverlayTrigger>{' '}
here
</p>
<hr />
<h4>Overflowing text to show scroll behavior</h4>
<p>
Cras mattis consectetur purus sit amet fermentum. Cras justo odio,
dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta
ac consectetur ac, vestibulum at eros.
</p>
</Modal.Body>
<Modal.Footer>
<Button onClick={this.handleClose}>Close</Button>
</Modal.Footer>
</Modal>
</div>
);
}
}
class PalladiumHub extends React.Component {
render() {
return (<tr>
<td>{this.props.keyuser}</td>
<td>{this.props.name.name}</td>
<td><button type="button" onClick={(e) => { this.props.editTask(this.props.index) }} >Edit</button><button onClick={(e) => { this.props.deleteTask(this.props.index) }}>Delete</button></td>
</tr>
)
}
}
class CallCRUD extends React.Component {
constructor(props) {
super(props);
this.deleteTask = this.deleteTask.bind(this);
this.editTask = this.editTask.bind(this);
this.state = {
error: null,
isLoaded: false,
items: [],
isOpen: false,
show : false,
popup_index:''
};
}
componentDidMount() {
fetch("https://jsonplaceholder.typicode.com/users")
.then(res => res.json())
.then(
(result) => {
this.setState({
isLoaded: true,
items: result
});
},
(error) => {
this.setState({
isLoaded: true,
error
});
}
)
}
toggleModal(index) {
this.setState({show:true,popup_index:index});
}
deleteTask(index) {
//alert(index);
//console.log(index);
//return false;
let tasks = this.state.items;
tasks.splice(index, 1);
this.setState({
items: tasks
})
}
editTask(index) {
this.toggleModal(index);
//console.log(index);
}
render() {
console.log(this.state.items);
return (
<section>
<table border="1"> <tr><th>ID</th><th>Name</th><th>Action</th></tr> {
this.state.items.map((data, index) => {
//return console.log(data.id);
return <PalladiumHub name={data} keyuser={data.id} index={index} key={index} deleteTask={this.deleteTask} editTask={this.editTask} />
})
}
</table>
<Example handleShow = {this.state.show} popup_id = {this.state.popup_index} />
</section>
);
}
}
ReactDOM.render(
<CallCRUD />, document.getElementById('root')
);
允许在同一insert into `post_users_map` (`post_id`,`user_id`,`is_owner`)
select 12345, user_id, 0
from `users`
where username in ('A','B','C');
insert into `post_users_map` (`post_id`,`user_id`,`is_owner`) values
(12345, 123, 1);
中包含更多元组。
values或者您可以使用UNION ALL插入2个select中具有不同is_owner的user_id。
insert