如何使用node-postgres插入多行?

时间:2017-10-11 06:32:09

标签: node.js postgresql node-postgres

这是我的陈述:

INSERT INTO userpermissions (username, permission)
VALUES ($1, $2),($3,$4)
RETURNING *;

这是我的代码:

db.query(stmt2,values2, (err2, result2) => {
       //Do other stuff depending on if there is an error or result
}

其中stmt2是上面的语句,values2是我创建的数组:

            var values2 = [];
            for(i=0;i<permissions.length;i++){
                values2.push(username);
                values2.push(permissions[i]);
            }

存在某种错误/致命异常,但由于错误的域被包装,我无法看到它。

1 个答案:

答案 0 :(得分:2)

SQL:

f=# create table tt(i int,t text);
CREATE TABLE
f=# grant all on tt to t;
GRANT

JS:

const { Pool, Client } = require('pg')

const client = new Client({
  user: 't',
  host: '10.10.10.10',
  database: 'f',
  password: 't',
  port: 5432
})
client.connect()

client.query('INSERT INTO tt(i, t) VALUES($1, $2),($3,$4) RETURNING *', ['1', 'SO',2,'sO'], (err, res) => {
  console.log(err, res)
  client.end()
})

运行:

C:\Users\Vao\vatest>node t.js
null Result {
  command: 'INSERT',
  rowCount: 2,
  oid: 0,
  rows: [ anonymous { i: 1, t: 'SO' }, anonymous { i: 2, t: 'sO' } ],
  fields:
   [ Field {
       name: 'i',
       tableID: 131471390,
       columnID: 1,
       dataTypeID: 23,
       dataTypeSize: 4,
       dataTypeModifier: -1,
       format: 'text' },
     Field {
       name: 't',
       tableID: 131471390,
       columnID: 2,
       dataTypeID: 25,
       dataTypeSize: -1,
       dataTypeModifier: -1,
       format: 'text' } ],
  _parsers: [ [Function: parseInteger], [Function: noParse] ],
  RowCtor: [Function: anonymous],
  rowAsArray: false,
  _getTypeParser: [Function: bound ] }

最后检查:

f=# select * from tt;
 i | t
---+----
 1 | SO
 2 | sO
(2 rows)
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