sql

Author: lcs9317

back/src/main/resources/db/migration/V8__add_seed_theme.sql

@@ -0,0 +1,44 @@
+/*
+ * 이 파일은 pgvector 기반 검색 테이블을 한 번에 생성한다.
+ * 흐름: 확장 활성화 → age_theme 생성/인덱스 → vocab_term 생성/인덱스 → ANALYZE
+ */
+
+-- 확장 활성화
+CREATE EXTENSION IF NOT EXISTS vector;
+
+-- age_theme 테이블 생성
+CREATE TABLE IF NOT EXISTS age_theme (
+                                         id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+                                         min_age    INT NOT NULL,
+                                         max_age    INT NOT NULL,
+                                         category   VARCHAR(32) NOT NULL,
+    theme      TEXT NOT NULL,
+    embedding  VECTOR(768) NOT NULL,
+    -- 무결성 검증
+    CONSTRAINT ck_age_theme_age_range CHECK (min_age >= 0 AND max_age >= min_age)
+    );
+
+-- 범주/연령대 필터 인덱스
+CREATE INDEX IF NOT EXISTS idx_age_theme_cat_age
+    ON age_theme(category, min_age, max_age);
+
+-- 코사인 KNN 인덱스(저사양 환경 고려 ivfflat)
+CREATE INDEX IF NOT EXISTS idx_age_theme_embedding_ivfflat
+    ON age_theme USING ivfflat (embedding vector_cosine_ops)
+    WITH (lists = 50);
+
+-- vocab_term 테이블 생성
+CREATE TABLE IF NOT EXISTS vocab_term (
+                                          id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+                                          term       VARCHAR(128) NOT NULL UNIQUE,
+    embedding  VECTOR(768) NOT NULL
+    );
+
+-- 코사인 KNN 인덱스
+CREATE INDEX IF NOT EXISTS idx_vocab_term_embedding_ivfflat
+    ON vocab_term USING ivfflat (embedding vector_cosine_ops)
+    WITH (lists = 50);
+
+-- 통계 수집
+ANALYZE age_theme;
+ANALYZE vocab_term;