41 lines
1.8 KiB
TypeScript
41 lines
1.8 KiB
TypeScript
import { MigrationInterface, QueryRunner } from 'typeorm'
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export class removeDateIndexes1669636497932 implements MigrationInterface {
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name = 'removeDateIndexes1669636497932'
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public async up(queryRunner: QueryRunner): Promise<void> {
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await this.renameRevisionsTable(queryRunner)
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const indexRevisionsOnCreatedAt = await queryRunner.manager.query(
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'SHOW INDEX FROM `revisions_revisions` where `key_name` = "created_at"',
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)
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const indexRevisionsOnCreatedAtExist = indexRevisionsOnCreatedAt && indexRevisionsOnCreatedAt.length > 0
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if (indexRevisionsOnCreatedAtExist) {
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await queryRunner.query('DROP INDEX `created_at` ON `revisions_revisions`')
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}
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const indexRevisionsOnCreationDate = await queryRunner.manager.query(
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'SHOW INDEX FROM `revisions_revisions` where `key_name` = "creation_date"',
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)
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const indexRevisionsOnCreationDateAtExist = indexRevisionsOnCreationDate && indexRevisionsOnCreationDate.length > 0
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if (indexRevisionsOnCreationDateAtExist) {
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await queryRunner.query('DROP INDEX `creation_date` ON `revisions_revisions`')
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}
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}
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public async down(queryRunner: QueryRunner): Promise<void> {
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await queryRunner.query('CREATE INDEX `creation_date` ON `revisions_revisions` (`creation_date`)')
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await queryRunner.query('CREATE INDEX `created_at` ON `revisions_revisions` (`created_at`)')
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}
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private async renameRevisionsTable(queryRunner: QueryRunner) {
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const revisionsTableExistsQueryResult = await queryRunner.manager.query(
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'SELECT COUNT(*) as count FROM information_schema.tables WHERE table_schema = DATABASE() AND table_name = "revisions"',
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)
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const revisionsTableExists = revisionsTableExistsQueryResult[0].count === 1
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if (revisionsTableExists) {
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await queryRunner.query('ALTER TABLE `revisions` RENAME TO `revisions_revisions`, ALGORITHM=INSTANT')
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}
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}
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}
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