hyungi_document_server/migrations/167_study_sessions_idx_lang.sql at 2eda8d3bdd8186169fafeb4c3cab2a91c134227a - hyungi_document_server - Hyun-git

hyungi/hyungi_document_server

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Hyungi Ahn 2df7b24ac9 fix(study): split migration 164 into 10 single-statement files (asyncpg)

asyncpg prepared statement 는 single-command 만 허용. 원래 한 파일이던 study_sessions
스키마(CREATE TABLE x2 + CREATE INDEX x8)를 143~146 분할 패턴 따라 10개로 분리.

  164: CREATE TABLE study_sessions
  165~169: study_sessions 인덱스 5개 (partial)
  170: CREATE TABLE study_session_assets
  171~173: study_session_assets 인덱스 3개

문제: cannot insert multiple commands into a prepared statement
원인: _run_migrations 가 conn.exec_driver_sql 로 단일 prepared statement 실행

2026-04-27 08:18:40 +09:00

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 -- 167_study_sessions_idx_lang.sql (4/10)
 -- 어학 카드 그룹 (Phase 3 모바일 암기노트)
 CREATE INDEX IF NOT EXISTS idx_study_sessions_lang
     ON study_sessions (user_id, language_code, learning_level, subject, topic)
     WHERE study_type = 'language';