Question

im是Redis的新功能，并尝试显示已排序的特定值的排序集。 Redis有办法做到这一点吗？

    DECLARE @Database NVARCHAR(255)   
    DECLARE @Table NVARCHAR(255)  
    DECLARE @cmd NVARCHAR(1000)  

    DECLARE DatabaseCursor CURSOR READ_ONLY FOR  
    SELECT name FROM master.sys.databases   
    WHERE name IN ('YOUR DATABASE NAME')  -- databases
    AND state = 0 -- database is online
    AND is_in_standby = 0 -- database is not read only for log shipping
    ORDER BY 1  

    OPEN DatabaseCursor  

    FETCH NEXT FROM DatabaseCursor INTO @Database  
    WHILE @@FETCH_STATUS = 0  
    BEGIN  

       SET @cmd = 'DECLARE TableCursor CURSOR READ_ONLY FOR SELECT ''['' + table_catalog + ''].['' + table_schema + ''].['' +  
       table_name + '']'' as tableName FROM [' + @Database + '].INFORMATION_SCHEMA.TABLES WHERE table_type = ''BASE TABLE'''   

       -- create table cursor  
       EXEC (@cmd)  
       OPEN TableCursor   

       FETCH NEXT FROM TableCursor INTO @Table   
       WHILE @@FETCH_STATUS = 0   
       BEGIN
          BEGIN TRY   
             SET @cmd = 'ALTER INDEX ALL ON ' + @Table + ' REBUILD' 
             PRINT @cmd -- uncomment if you want to see commands
             EXEC (@cmd) 
          END TRY
          BEGIN CATCH
             PRINT '---'
             PRINT @cmd
             PRINT ERROR_MESSAGE() 
             PRINT '---'
          END CATCH

          FETCH NEXT FROM TableCursor INTO @Table   
       END   

       CLOSE TableCursor   
       DEALLOCATE TableCursor  

       FETCH NEXT FROM DatabaseCursor INTO @Database  
    END  
    CLOSE DatabaseCursor   
    DEALLOCATE DatabaseCursor

我只想与朋友一起显示带有分数的排序集。

SADD friends "Sarah"
SADD friends "Lisa"
SADD friends "Tim"


ZADD users 200 "Sarah"
ZADD users 133 "Lisa"
ZADD users 410 "Peter"
ZADD users 280 "Tim"
ZADD users 205 "Hans"

Answer 1

您可以使用ZINTERSTORE，因为它也可以与常规SET一起使用。请注意，它将使用1作为元素分数，但是您可以使用权重0删除它：

ZINTERSTORE aux_zset 2 friends users weights 0 1

结果ZSET有您的答案：

127.0.0.1:6379> zrange aux_zset 0 -1 withscores
1) "Lisa"
2) "133"
3) "Sarah"
4) "200"
5) "Tim"
6) "280"

Redis：针对特定SMEMBERS的排序集

1 个答案: