perf: add composite index for tag table

This commit is contained in:
Greg Heartsfield 2022-12-17 12:01:20 -06:00
parent b6e33f044f
commit cc06167e06

View File

@ -20,7 +20,7 @@ pragma mmap_size = 536870912; -- 512MB of mmap
"##;
/// Latest database version
pub const DB_VERSION: usize = 9;
pub const DB_VERSION: usize = 10;
/// Schema definition
const INIT_SQL: &str = formatcp!(
@ -67,6 +67,7 @@ FOREIGN KEY(event_id) REFERENCES event(id) ON UPDATE CASCADE ON DELETE CASCADE
);
CREATE INDEX IF NOT EXISTS tag_val_index ON tag(value);
CREATE INDEX IF NOT EXISTS tag_val_hex_index ON tag(value_hex);
CREATE INDEX IF NOT EXISTS tag_composite_index ON tag(event_id,name,value_hex,value);
-- NIP-05 User Validation
CREATE TABLE IF NOT EXISTS user_verification (
@ -163,7 +164,9 @@ pub fn upgrade_db(conn: &mut PooledConnection) -> Result<()> {
if curr_version == 8 {
curr_version = mig_8_to_9(conn)?;
}
if curr_version == 9 {
curr_version = mig_9_to_10(conn)?;
}
if curr_version == DB_VERSION {
info!(
"All migration scripts completed successfully. Welcome to v{}.",
@ -419,5 +422,24 @@ PRAGMA user_version = 9;
panic!("database could not be upgraded");
}
}
Ok(8)
Ok(9)
}
fn mig_9_to_10(conn: &mut PooledConnection) -> Result<usize> {
info!("database schema needs update from 9->10");
// Those old indexes were actually helpful...
let upgrade_sql = r##"
CREATE INDEX IF NOT EXISTS tag_composite_index ON tag(event_id,name,value_hex,value);
PRAGMA user_version = 10;
"##;
match conn.execute_batch(upgrade_sql) {
Ok(()) => {
info!("database schema upgraded v9 -> v10");
}
Err(err) => {
error!("update failed: {}", err);
panic!("database could not be upgraded");
}
}
Ok(10)
}