总结expert领域的功能

sql/add_field_ai_source_to_expert.sql

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+-- 若已执行过 add_field_ai_to_expert.sql 但缺少 field_ai_source，单独补这一列
+ALTER TABLE `t_expert`
+  ADD COLUMN `field_ai_source` VARCHAR(32) NOT NULL DEFAULT '' COMMENT '来源: user_link / ai' AFTER `field_ai_utime`;

sql/patch_expert_field_ai_columns.php

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+<?php
+/**
+ * 补全 t_expert 缺失的 field_ai 相关字段（可重复执行）
+ * 用法: php sql/patch_expert_field_ai_columns.php
+ */
+$config = require __DIR__ . '/../application/database.php';
+
+$dsn = sprintf(
+    'mysql:host=%s;port=%s;dbname=%s;charset=%s',
+    $config['hostname'],
+    $config['hostport'],
+    $config['database'],
+    $config['charset']
+);
+$pdo = new PDO($dsn, $config['username'], $config['password'], [
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+]);
+
+$table = $config['prefix'] . 'expert';
+$cols = $pdo->query("SHOW COLUMNS FROM `{$table}`")->fetchAll(PDO::FETCH_COLUMN, 0);
+$colSet = array_flip($cols);
+
+$alters = [];
+if (!isset($colSet['field_ai'])) {
+    $alters[] = "ADD COLUMN `field_ai` VARCHAR(512) NOT NULL DEFAULT '' COMMENT 'AI总结的主要研究领域(中文)' AFTER `affiliation`";
+}
+if (!isset($colSet['field_ai_status'])) {
+    $after = isset($colSet['field_ai']) || !empty($alters) ? 'field_ai' : 'affiliation';
+    $alters[] = "ADD COLUMN `field_ai_status` TINYINT NOT NULL DEFAULT 0 COMMENT '0待处理 1已生成 2资料不足 3失败 4无user待AI' AFTER `{$after}`";
+}
+if (!isset($colSet['field_ai_utime'])) {
+    $alters[] = "ADD COLUMN `field_ai_utime` INT NOT NULL DEFAULT 0 COMMENT 'field_ai更新时间' AFTER `field_ai_status`";
+}
+if (!isset($colSet['field_ai_source'])) {
+    $alters[] = "ADD COLUMN `field_ai_source` VARCHAR(32) NOT NULL DEFAULT '' COMMENT '来源: user_link / ai' AFTER `field_ai_utime`";
+}
+
+if (empty($alters)) {
+    echo "OK: all field_ai columns exist on {$table}\n";
+    exit(0);
+}
+
+$sql = "ALTER TABLE `{$table}` " . implode(', ', $alters);
+echo "Running: {$sql}\n";
+$pdo->exec($sql);
+echo "Done.\n";