Update ch08: 秋招秘籍 C.md
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@@ -1,9 +1,9 @@
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# 练习一:行转列
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假设有如下比赛结果
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```plain
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+------------+-----------+
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| cdate | result |
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+------------+-----------+
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+--------------+-----------+
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| cdate | result |
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+--------------+-----------+
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| 2021-01-01 | 胜 |
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| 2021-01-01 | 负 |
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| 2021-01-03 | 胜 |
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@@ -14,9 +14,9 @@
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```
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请使用 SQL 将比赛结果转换为如下形式:
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```plain
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+------------+-----+-----|
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| 比赛日期 | 胜 | 负 |
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+------------+-----------+
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+--------------+-----+-----|
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| 比赛日期 | 胜 | 负 |
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+--------------+-----------+
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| 2021-01-01 | 2 | 1 |
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| 2021-01-03 | 1 | 2 |
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+------------+-----------+
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@@ -24,18 +24,18 @@
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# 练习二:列转行
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假设有如下比赛结果
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```plain
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+------------+-----+-----|
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| 比赛日期 | 胜 | 负 |
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+------------+-----------+
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+--------------+-----+-----|
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| 比赛日期 | 胜 | 负 |
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+--------------+-----------+
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| 2021-01-01 | 2 | 1 |
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| 2021-01-03 | 1 | 2 |
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+------------+-----------+
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```
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请使用 SQL 将比赛结果转换为如下形式:
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```plain
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+------------+-----------+
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| cdate | result |
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+------------+-----------+
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+--------------+-----------+
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| cdate | result |
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+--------------+-----------+
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| 2021-01-01 | 胜 |
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| 2021-01-01 | 负 |
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| 2021-01-03 | 胜 |
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