fromis_9/backend/sql/suggestions.sql

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-- 추천 검색어 테이블
-- 검색어 테이블 (Unigram)
CREATE TABLE IF NOT EXISTS suggestion_queries (
id INT AUTO_INCREMENT PRIMARY KEY,
query VARCHAR(255) NOT NULL UNIQUE,
count INT DEFAULT 1,
last_searched_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
INDEX idx_query_prefix (query(50)),
INDEX idx_count (count DESC),
INDEX idx_last_searched (last_searched_at DESC)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-- 단어 쌍 테이블 (Bi-gram)
CREATE TABLE IF NOT EXISTS suggestion_word_pairs (
word1 VARCHAR(100) NOT NULL,
word2 VARCHAR(100) NOT NULL,
count INT DEFAULT 1,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (word1, word2),
INDEX idx_word1_count (word1, count DESC)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-- 초성 인덱스 테이블
CREATE TABLE IF NOT EXISTS suggestion_chosung (
chosung VARCHAR(50) NOT NULL,
word VARCHAR(100) NOT NULL,
count INT DEFAULT 1,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (chosung, word),
INDEX idx_chosung (chosung),
INDEX idx_count (count DESC)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;