I am trying to use faker to insert data into my postgresql database via knex.
See below a minimum example:
//Loading from an external file
var knex = require('knex')({
client: 'postgresql',
connection: {
database: 'knexdb',
user: 'root',
password: 'root'
},
debug: false,
})
// using faker
const faker = require('faker')
async function main() {
//test connection
await knex.raw('select 1+1 as result').then(function () {
console.log("valid db connection")
// there is a valid connection in the pool
});
//delete data
await knex('posts').del().then(function () {
const res = knex('posts')
if (res) {
console.log("Table content deleted")
} else {
console.log(res)
}
})
const dataAmount = 3
console.log("lets insert " + dataAmount + " rows of data")
for (var index = 0; index < dataAmount; index++) {
try {
await knex('posts').insert({
title: faker.random.word,
description: faker.lorem.paragraph,
deleted: faker.random.boolean,
createdAt: faker.date.recent,
updatedAt: faker.date.recent
})
} catch (e) {
console.log(e)
}
}
// select all
res = await knex('posts')
console.log('All: ', res)
}
main() //.then().catch(err => console.error(err))
I am getting the following error SELECT * with no tables specified is not valid. See below the full output:
valid db connection Table content deleted insert 3 rows of data { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } All: [] ^C C:\Users\user\Desktop\Coding Projects\learning_knex\src>node t3-faker.js valid db connection Table content deleted lets insert 3 rows of data { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } { error: SELECT * with no tables specified is not valid at Connection.parseE (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:546:11) at Connection.parseMessage (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:371:19) at Socket. (C:\Users\user\Desktop\Coding Projects\learning_knex\node_modules\pg\lib\connection.js:114:22) at emitOne (events.js:115:13) at Socket.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at Socket.Readable.push (_stream_readable.js:211:10) at TCP.onread (net.js:585:20) name: 'error', length: 117, severity: 'ERROR', code: '42601', detail: undefined, hint: undefined, position: '99', internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'parse_target.c', line: '1211', routine: 'ExpandAllTables' } All: []
Any suggestions what I am doing wrong?
You are mixing promises and async / await which makes code harder to read and you have made also some errors there, maybe this does what you are trying to do:
//Loading from an external file
var knex = require('knex')({
client: 'postgresql',
connection: {
database: 'knexdb',
user: 'root',
password: 'root'
},
debug: false,
})
// using faker
const faker = require('faker')
async function main() {
//test connection
await knex.raw('select 1+1 as result');
console.log("valid db connection");
//delete data
await knex('posts').del();
const res = await knex('posts'); // FIXED: this was missing await
if (res.length === 0) { // FIXED: also empty array is truthy
console.log("Table content deleted");
} else {
console.log(res);
}
const dataAmount = 3
console.log(`lets insert ${dataAmount} rows of data`);
for (let index = 0; index < dataAmount; index++) {
try {
// FIXED: faker calls were missing () from the end
await knex('posts').insert({
title: faker.random.word(),
description: faker.lorem.paragraph(),
deleted: faker.random.boolean(),
createdAt: faker.date.recent(),
updatedAt: faker.date.recent()
});
} catch (e) {
console.log(e);
}
}
// select all
let finalRes = await knex('posts');
console.log('All: ', finelRes);
}
main().then().catch(err => console.error(err));
I suppose thatSELECT * without table errors were caused somehow, because you were trying to write functions to your DB instead of values.