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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
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