38 lines
1.4 KiB
JavaScript
38 lines
1.4 KiB
JavaScript
exports.up = async function (knex) {
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const isSQLite = knex.client.dialect === "sqlite3";
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if (isSQLite) {
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// For SQLite: Use partial indexes with WHERE important = 1
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// Drop existing indexes using IF EXISTS
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await knex.raw("DROP INDEX IF EXISTS monitor_important_time_index");
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await knex.raw("DROP INDEX IF EXISTS heartbeat_important_index");
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// Create partial indexes with predicate
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await knex.schema.alterTable("heartbeat", function (table) {
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table.index(["monitor_id", "time"], "monitor_important_time_index", {
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predicate: knex.whereRaw("important = 1"),
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});
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table.index(["important"], "heartbeat_important_index", {
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predicate: knex.whereRaw("important = 1"),
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});
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});
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}
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// For MariaDB/MySQL: No changes (partial indexes not supported)
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};
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exports.down = async function (knex) {
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const isSQLite = knex.client.dialect === "sqlite3";
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if (isSQLite) {
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// Restore original indexes
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await knex.raw("DROP INDEX IF EXISTS monitor_important_time_index");
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await knex.raw("DROP INDEX IF EXISTS heartbeat_important_index");
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await knex.schema.alterTable("heartbeat", function (table) {
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table.index(["monitor_id", "important", "time"], "monitor_important_time_index");
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table.index(["important"]);
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});
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}
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// For MariaDB/MySQL: No changes
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};
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