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23 lines
866 B
23 lines
866 B
5 years ago
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/* global WIKI */
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exports.up = knex => {
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let sqlVersionDate = ''
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switch (WIKI.config.db.type) {
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case 'postgres':
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case 'mssql':
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sqlVersionDate = 'UPDATE "pageHistory" h1 SET "versionDate" = COALESCE((SELECT prev."createdAt" FROM "pageHistory" prev WHERE prev."pageId" = h1."pageId" AND prev.id < h1.id ORDER BY prev.id DESC LIMIT 1), h1.createdAt)'
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break
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case 'mysql':
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case 'mariadb':
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sqlVersionDate = `UPDATE pageHistory AS h1 INNER JOIN pageHistory AS h2 ON h2.id = (SELECT prev.id FROM pageHistory AS prev WHERE prev.pageId = h1.pageId AND prev.id < h1.id ORDER BY prev.id DESC LIMIT 1) SET h1.versionDate = h2.createdAt`
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break
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}
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return knex.schema
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.alterTable('pageHistory', table => {
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table.string('versionDate').notNullable().defaultTo('')
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})
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.raw(sqlVersionDate)
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}
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exports.down = knex => { }
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