-- phpMyAdmin SQL Dump
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/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
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--
-- Database: `items`
--
-- --------------------------------------------------------
--
-- Table structure for table `tests`
--
CREATE TABLE `tests` (
`ID` int(4) NOT NULL,
`SID` int(4) NOT NULL,
`VID` int(4) NOT NULL,
`Text` varchar(20) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
--
-- Indexes for dumped tables
--
--
-- Indexes for table `tests`
--
ALTER TABLE `tests`
ADD PRIMARY KEY (`ID`);
--
-- AUTO_INCREMENT for dumped tables
--
--
-- AUTO_INCREMENT for table `tests`
--
ALTER TABLE `tests`
MODIFY `ID` int(4) NOT NULL AUTO_INCREMENT;
COMMIT;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
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我知道了,但是我不知道如何将它们搭配在一起
在2行之间选择:
SELECT
MAX(`VID`)-3 AS max1,
MAX(`VID`)-2 AS max2
FROM `tests`
GROUP BY `SID`
返回行的值:
SELECT *
FROM `tests`
WHERE `VID`>='max1' AND `VID`<='max2'
ORDER BY `SID` ASC, `VID` ASC
结果应该是这样的:
**Group:1**
test - 3
test - 4
**Group:2**
test - 283
test - 284
**Group:3**
test - 197
test - 198
**Group:4**
test - 173
test - 174
**Group:5**
test - 117
test - 118
**Group:6**
test - 162
test - 163
**Group:7**
test - 203
test - 204
**Group:8**
test - 72
test - 73
**Group:9**
test - 126
test - 127
**Group:10**
test - 106
test - 107
答案 0 :(得分:1)
您可以将表与包裹在子查询中的汇总表连接起来:
SELECT t.*
FROM tests t
JOIN (
SELECT SID
, MAX(VID)-3 AS max1
, MAX(VID)-2 AS max2
FROM tests
GROUP BY SID
) tagg
ON tagg.SID = t.SID
WHERE t.VID >= tagg.max1
AND t.VID <= tagg.max2
ORDER BY t.SID
, t.VID
;