回答編集履歴
1
ちょうせい
answer
CHANGED
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@@ -1,6 +1,8 @@
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1
1
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```SQL
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create table tbl (user_id int,d date);
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+
```
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```SQL
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-
insert into tbl
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5
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insert into tbl(user_id,d)
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select 1,'2020-10-01' + interval a day
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from (
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select @a:= 0 AS a
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@@ -8,4 +10,26 @@
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select @a:= @a + 1 from information_schema.columns
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limit 7
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) as sub;
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+
```
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+
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15
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# 複数user_id
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```SQL
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insert into tbl(user_id,d)
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select * from(
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select 1+ a
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from (
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select @a:= 0 AS a
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union
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select @a:= @a + 1 from information_schema.columns
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limit 5 /* 5人分 */
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) as sub ) as t1
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inner join
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(select '2020-10-01' + interval a day
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from (
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select @a:= 0 AS a
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union
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select @a:= @a + 1 from information_schema.columns
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limit 7 /* 7日分 */
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) as sub) as t2
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on 1
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```
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