-- 不活跃钱包统计专用索引。仅新增索引，不修改业务数据；大表请低峰逐条执行并观察 IO。
-- 每段先检查可见 BTREE 索引的列前缀，等价索引已存在时跳过。
-- 若同名索引定义不同，CREATE INDEX 将报错，应检查后人工处理，禁止盲目删除重建。

SET @wallet_inactive_ddl = IF(EXISTS (
    SELECT 1 FROM (
        SELECT INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS cols
        FROM information_schema.STATISTICS
        WHERE TABLE_SCHEMA = 'pjcloudx_wallet' AND TABLE_NAME = 'wallet_transaction'
            AND IS_VISIBLE = 'YES' AND INDEX_TYPE = 'BTREE'
        GROUP BY INDEX_NAME
    ) indexes WHERE cols = 'tenant_id,user_id,del_flag,create_time'
        OR cols LIKE 'tenant_id,user_id,del_flag,create_time,%'
), 'SELECT ''wallet inactive: equivalent transaction index exists''',
'CREATE INDEX idx_wallet_inactive_tx_user_time ON pjcloudx_wallet.wallet_transaction (tenant_id,user_id,del_flag,create_time)');
PREPARE wallet_inactive_stmt FROM @wallet_inactive_ddl;
EXECUTE wallet_inactive_stmt;
DEALLOCATE PREPARE wallet_inactive_stmt;

SET @wallet_inactive_ddl = IF(EXISTS (
    SELECT 1 FROM (
        SELECT INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS cols
        FROM information_schema.STATISTICS
        WHERE TABLE_SCHEMA = 'pjcloudx_wallet' AND TABLE_NAME = 'wallet_manage'
            AND IS_VISIBLE = 'YES' AND INDEX_TYPE = 'BTREE'
        GROUP BY INDEX_NAME
    ) indexes WHERE cols = 'tenant_id,del_flag,user_id,create_time'
        OR cols LIKE 'tenant_id,del_flag,user_id,create_time,%'
), 'SELECT ''wallet inactive: equivalent user index exists''',
'CREATE INDEX idx_wallet_inactive_user ON pjcloudx_wallet.wallet_manage (tenant_id,del_flag,user_id,create_time)');
PREPARE wallet_inactive_stmt FROM @wallet_inactive_ddl;
EXECUTE wallet_inactive_stmt;
DEALLOCATE PREPARE wallet_inactive_stmt;

SET @wallet_inactive_ddl = IF(EXISTS (
    SELECT 1 FROM (
        SELECT INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS cols
        FROM information_schema.STATISTICS
        WHERE TABLE_SCHEMA = 'pjcloudx_wallet' AND TABLE_NAME = 'wallet_manage'
            AND IS_VISIBLE = 'YES' AND INDEX_TYPE = 'BTREE'
        GROUP BY INDEX_NAME
    ) indexes WHERE cols = 'tenant_id,del_flag,dept_id,user_id,create_time'
        OR cols LIKE 'tenant_id,del_flag,dept_id,user_id,create_time,%'
), 'SELECT ''wallet inactive: equivalent department index exists''',
'CREATE INDEX idx_wallet_inactive_dept_user ON pjcloudx_wallet.wallet_manage (tenant_id,del_flag,dept_id,user_id,create_time)');
PREPARE wallet_inactive_stmt FROM @wallet_inactive_ddl;
EXECUTE wallet_inactive_stmt;
DEALLOCATE PREPARE wallet_inactive_stmt;

-- 执行后核对 SHOW INDEX，并对 Mapper 的 countUsers / pageUsers / listWallets
-- 分别进行 EXPLAIN ANALYZE，验证近期流水存在性检查和最后流水取首行使用用户时间索引。