回答編集履歴
2
chousei
test
CHANGED
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@@ -23,3 +23,27 @@
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23
23
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(meta_key=b and meta_value=あ and meta_value=え) →1or2
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24
24
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そのandをとると1のハズですが、命題では「1」及び「2」を得たいとのこと
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26
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+
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27
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+
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28
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29
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+
# あらためて
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30
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+
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31
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32
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33
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+
```SQL
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34
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+
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35
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select post_id from(
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36
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37
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select post_id from wp_postmeta where meta_key='a' and meta_value in('あ','い')
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38
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+
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group by post_id having count(distinct meta_value)=2
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40
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union all select post_id from wp_postmeta where meta_key='b' and meta_value in('あ','え')
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group by post_id having count(distinct meta_value)=2
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44
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) as sub group by post_id having count(*)=2
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47
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+
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48
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+
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49
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```
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1
調整
test
CHANGED
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@@ -1,4 +1,4 @@
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1
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-
>
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1
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+
> 1
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2
2
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3
3
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4
4
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@@ -12,7 +12,7 @@
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12
12
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13
13
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15
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-
> 2
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15
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+
> 2
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18
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