"knex migration" Code Answer's
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move records from table to another using knex migration
Emmanuel Mahuni
on Nov 13, 2020
// modified by Emmanuel Mahuni to use async/await more readable code
exports.up = async function(knex) {
await knex.schema.createTable('table_b', t => {
t.string('col_a')
t.string('col_b')
})
await knex.schema.createTable('table_c', t => {
t.string('col_c')
t.string('col_d')
})
let rows = await knex('table_a').select('col_a', 'col_b')
await knex('table_b').insert(rows)
rows = await knex('table_a').select('col_c', 'col_d')
await knex('table_c').insert(rows)
await knex.schema.dropTableIfExists('table_a'))
};
exports.down = async function(knex) {
await knex.schema.createTable('table_a', t => {
t.string('col_a')
t.string('col_b')
t.string('col_c')
t.string('col_d')
})
let rows = await knex('table_b').select('col_a', 'col_b')
await knex('table_a').insert(rows)
rows = await knex('table_c').select('col_c', 'col_d')
await knex('table_a').insert(rows)
await knex.schema.dropTableIfExists('table_b')
await knex.schema.dropTableIfExists('table_c')
};
Source: stackoverflow.com
knex migration
Restu Wahyu Saputra
on Nov 04, 2020
// best tutorial knex migration
https://www.youtube.com/watch?v=ipAH7lMfq7k
https://www.youtube.com/watch?v=U7GjS3FuSkAknex migrations tinyint
Encouraging Elk
on Oct 01, 2020
table.specificType('ColumName', 'smallint');knex datatypes
Wicked Wasp
on Sep 09, 2020
table.increments('id')
table.string('account_name')
table.integer('age')
table.float('age')
table.decimal('balance', 8, 2)
table.boolean('is_admin')
table.date('birthday')
table.time('created_at')
table.timestamp('created_at').defaultTo(knex.fn.now())
table.json('profile')
table.jsonb('profile')
table.uuid('id').primary()
Source: devhints.io
knex js join schema
Restu Wahyu Saputra
on Dec 15, 2020
exports.up = (knex) => {
knex.schema.createTable('bookings', (table) => {
table.increment('booking_id').primary()
table.foreign('user_id').references('user_id').inTable('users').notNullable().onDelete('CASCADE').index()
table.foreign('room_id').references('room_id').inTable('rooms').notNullable().onDelete('CASCADE').index()
table.integer('total_person').notNullable().defaultTo(0)
table.datetime('booking_time').notNullable().defaultTo(knex.fn.now())
table.string('noted').notNullable()
table.datetime('check_in_time').defaultTo(knex.fn.now())
table.datetime('check_out_time').defaultTo(knex.fn.now())
table.timestamp('created_at').defaultTo(knex.fn.now())
table.timestamp('update_at').defaultTo(knex.fn.now())
table.timestamp('delete_at').defaultTo(knex.fn.now())
})
}
exports.down = (knex) => knex.schema.dropTable('bookings')knexjs execute all migrations
Selfish Spider
on Nov 17, 2020
$ knex migrate:make create_users_table
$ knex migrate:make create_tasks_tableSource: gist.github.com
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