pre-view/CS50-raw · Datasets at Hugging Face

text stringlengths 1 81	start float64 0 10.1k	duration float64 0 24.9
And notice here, that "title" has to be actually added to our database.	342.67	5.05
It can't be [? NULL. ?] It can't have an empty value.	347.72	2.78
Same thing for "accession_number."	350.5	2.19
And further, "accession_number" has to be unique.	352.69	3.445
I can't have two items [? with ?] [? a ?] [? different ?]	356.135	2.375
"accession_number."	358.51	1.08
Otherwise, I might get them confused in my database	359.59	2.79
or inside my museum archives as well.	362.38	2.95
So let me then add this schema to my database.	365.33	4.22
And I can do so with this command right here.	369.55	2.73
This is a SQLite command called .read, that we saw a little bit last week	372.28	4.5
as well.	376.78	0.91
I could type .read and then the name of this file I want to read.	377.69	3.75
So I'll say .read schema.sql.	381.44	4.18
Hit Enter.	385.62	2.4
And now if I type, let's say .schema, I can see that same [? sql ?]	388.02	5.43
[? schema, ?] same database schema. now inside of my terminal.	393.45	5.83
OK, so now as promised, let's try adding some rows to this table.	399.28	5.14
Because right now, if I do SELECT [? star ?] from [? collections ?]	404.42	3.62
[? semicolon, ?] I don't see anything because nothing is inside yet.	408.04	4.89
But I could add something using INSERT INTO.	412.93	3.07
So let's try that.	416	1.39
I'll say INSERT INTO the "collections table."	417.39	4.24
And now, I have to ask, what columns inside of "collections"	421.63	3.75
[? do I ?] [? want ?] to add data to.	425.38	2.7
Well, I probably want to add to the first the "id" column,	428.08	3.54
that primary key column.	431.62	1.86
Then maybe, I want to add a "title" to this row, and also	433.48	3.99
an "accession_number," and also, of course, the date this piece	437.47	3.84
was "acquired."	441.31	1.36
So now, I have the table I'm inserting into along	442.67	3.08
with the columns I'm adding values for.	445.75	2.49
So for style's sake, I'll hit Enter here.	448.24	2.82
And now, I could type a list of values to insert into this new row.	451.06	4.65
I could say VALUES, and then inside parentheses, the values	455.71	4.35
I want to insert.	460.06	1.59
Maybe the first primary key that I give to this item	461.65	3.36
is going to be just [? 1, ?] start at 1, and add up as we add new items.	465.01	4.41
For the title, I'll say let's call this one "Profusion of flowers."	469.42	4.11
This is the piece we recently acquired into our collection.	473.53	3.3
The accession number that we gave it was 56.257.	476.83	3.57
And the date it was acquired was back in 1956-04-12.	480.4	5.72
Now, I have all these values here.	486.12	1.56
I'll type [? semicolon ?] hit Enter, and nothing seems to happen.	487.68	4.35
But if I type, let's say, select [? star ?] from collections	492.03	5.34
[? semicolon, ?] what do I see, but this new row inside.	497.37	5.46
Let's do it again to get a hang of this.	502.83	1.71
I want to now add "Farmers working at dawn" to my collection.	504.54	3.06
So I'll do the same thing, I'll say let's INSERT INTO	507.6	3.48
the "collections" table.	511.08	1.589
And let's add values for the "id" column, the "title"	512.669	4.26
column, the "accession_number," and also the "acquired" column like this.	516.929	5.73
Again for style's sake, I'll hit Enter.	522.659	1.981
Now, I give some list of values to add into this new row.	524.64	4.14
I'll say VALUES here, then this list of values to add for each column.	528.78	4.5
Well, the first column, I have to give a value for is "id."	533.28	4.08
If you remember, our last id was 1, so what should this id be?	537.36	5.1
Maybe 2.	542.46	1.08
So I'll type 2 here as the next increment of my primary key,	543.54	4.65
then I'll give it a title.	548.19	1.14
And this title was "Farmers working at dawn."	549.33	4.14
We gave it an accession number to keep track of it	553.47	2.34
in our own internal museum records, our own archives here.	555.81	3.1
So I'll say 11.6152 is the [? accession ?] [? number ?] for this	558.91	6.2
particular item, then I'll say we acquired it back in 1911-08-03.	565.11	7.63
Now, I'll hit a semicolon here, hit Enter.	572.74	3.27
And now, I should be able to see if I type [? SELECT ?] [? star ?] FROM	576.01	3.51
"collections," SELECT [? star ?] FROM "collections"	579.52	3
[? semicolon, ?] I now have these two items inside of my collection.	582.52	6.22
Now, let's do one more here.	588.74	2.7
But let's focus in particular on this primary key.	591.44	4.2
Notice here, how we've been actually inserting our very own primary key	595.64	3.93
1 and then 2.	599.57	1.83
But maybe that's not the best design.	601.4	3.823
Let me try this again.	605.223	0.917
I'll say INSERT INTO, let's go for, "collections" [? is ?] our table name.	606.14	5.94
And maybe I'll try again to add to the "id" column, the "title"	612.08	4.71
column, the "accession_number," and the "acquired" column here.	616.79	7.14
What could go wrong do you think if I try to specify the primary key myself?	623.93	6.03
Let me ask this as an audience question here.	629.96	1.92
Feel free raise your hand.	631.88	1.26
What might go wrong if I try to make the primary key myself?	633.14	4.56
Insert a value myself?	637.7	1.485
Let's go to [INAUDIBLE].	643.01	1.89
SPEAKER 2: Yeah, what we could do when we have to [INAUDIBLE] a lot of values,	644.9	5.04
like maybe like big data or something, is there a way to add it to a CSV file	649.94	6.87
or something rather than typing [? insert ?] [? into ?] tables?	656.81	2.915
SPEAKER 1: A good question.	659.725	1.125
I think you're onto something here, which	660.85	1.708
is we're inserting one row at a time, which could get easily repetitive.	662.558	3.042
So let me hold that thought for just a minute here	665.6	2.297
and focus on the primary keys before we see some more efficient ways	667.897	2.833
to actually add data to our table.	670.73	2.23
So I'm with you on this idea of maybe we don't want	672.96	2.84
to duplicate this primary key, right?	675.8	1.897
Maybe we could do a little better than that.	677.697	1.833
So I'll come back to my computer here.	679.53	2.25
And if I specify the primary key, I might actually	681.78	3.89
add a value that's already in there.	685.67	2.17
So I could, thankfully, leave it up to SQLite to actually increment	687.84	4.34

And notice here, that "title" has to be actually added to our database.

342.67

5.05

It can't be [? NULL. ?] It can't have an empty value.

347.72

2.78

Same thing for "accession_number."

350.5

2.19

And further, "accession_number" has to be unique.

352.69

3.445

I can't have two items [? with ?] [? a ?] [? different ?]

356.135

2.375

"accession_number."

358.51

1.08

Otherwise, I might get them confused in my database

359.59

2.79

or inside my museum archives as well.

362.38

2.95

So let me then add this schema to my database.

365.33

4.22

And I can do so with this command right here.

369.55

2.73

This is a SQLite command called .read, that we saw a little bit last week

372.28

4.5

as well.

376.78

0.91

I could type .read and then the name of this file I want to read.

377.69

3.75

So I'll say .read schema.sql.

381.44

4.18

Hit Enter.

385.62

2.4

And now if I type, let's say .schema, I can see that same [? sql ?]

388.02

5.43

[? schema, ?] same database schema. now inside of my terminal.

393.45

5.83

OK, so now as promised, let's try adding some rows to this table.

399.28

5.14

Because right now, if I do SELECT [? star ?] from [? collections ?]

404.42

3.62

[? semicolon, ?] I don't see anything because nothing is inside yet.

408.04

4.89

But I could add something using INSERT INTO.

412.93

3.07

So let's try that.

416

1.39

I'll say INSERT INTO the "collections table."

417.39

4.24

And now, I have to ask, what columns inside of "collections"

421.63

3.75

[? do I ?] [? want ?] to add data to.

425.38

2.7

Well, I probably want to add to the first the "id" column,

428.08

3.54

that primary key column.

431.62

1.86

Then maybe, I want to add a "title" to this row, and also

433.48

3.99

an "accession_number," and also, of course, the date this piece

437.47

3.84

was "acquired."

441.31

1.36

So now, I have the table I'm inserting into along

442.67

3.08

with the columns I'm adding values for.

445.75

2.49

So for style's sake, I'll hit Enter here.

448.24

2.82

And now, I could type a list of values to insert into this new row.

451.06

4.65

I could say VALUES, and then inside parentheses, the values

455.71

4.35

I want to insert.

460.06

1.59

Maybe the first primary key that I give to this item

461.65

3.36

is going to be just [? 1, ?] start at 1, and add up as we add new items.

465.01

4.41

For the title, I'll say let's call this one "Profusion of flowers."

469.42

4.11

This is the piece we recently acquired into our collection.

473.53

3.3

The accession number that we gave it was 56.257.

476.83

3.57

And the date it was acquired was back in 1956-04-12.

480.4

5.72

Now, I have all these values here.

486.12

1.56

I'll type [? semicolon ?] hit Enter, and nothing seems to happen.

487.68

4.35

But if I type, let's say, select [? star ?] from collections

492.03

5.34

[? semicolon, ?] what do I see, but this new row inside.

497.37

5.46

Let's do it again to get a hang of this.

502.83

1.71

I want to now add "Farmers working at dawn" to my collection.

504.54

3.06

So I'll do the same thing, I'll say let's INSERT INTO

507.6

3.48

the "collections" table.

511.08

1.589

And let's add values for the "id" column, the "title"

512.669

4.26

column, the "accession_number," and also the "acquired" column like this.

516.929

5.73

Again for style's sake, I'll hit Enter.

522.659

1.981

Now, I give some list of values to add into this new row.

524.64

4.14

I'll say VALUES here, then this list of values to add for each column.

528.78

4.5

Well, the first column, I have to give a value for is "id."

533.28

4.08

If you remember, our last id was 1, so what should this id be?

537.36

5.1

Maybe 2.

542.46

1.08

So I'll type 2 here as the next increment of my primary key,

543.54

4.65

then I'll give it a title.

548.19

1.14

And this title was "Farmers working at dawn."

549.33

4.14

We gave it an accession number to keep track of it

553.47

2.34

in our own internal museum records, our own archives here.

555.81

3.1

So I'll say 11.6152 is the [? accession ?] [? number ?] for this

558.91

6.2

particular item, then I'll say we acquired it back in 1911-08-03.

565.11

7.63

Now, I'll hit a semicolon here, hit Enter.

572.74

3.27

And now, I should be able to see if I type [? SELECT ?] [? star ?] FROM

576.01

3.51

"collections," SELECT [? star ?] FROM "collections"

579.52

3

[? semicolon, ?] I now have these two items inside of my collection.

582.52

6.22

Now, let's do one more here.

588.74

2.7

But let's focus in particular on this primary key.

591.44

4.2

Notice here, how we've been actually inserting our very own primary key

595.64

3.93

1 and then 2.

599.57

1.83

But maybe that's not the best design.

601.4

3.823

Let me try this again.

605.223

0.917

I'll say INSERT INTO, let's go for, "collections" [? is ?] our table name.

606.14

5.94

And maybe I'll try again to add to the "id" column, the "title"

612.08

4.71

column, the "accession_number," and the "acquired" column here.

616.79

7.14

What could go wrong do you think if I try to specify the primary key myself?

623.93

6.03

Let me ask this as an audience question here.

629.96

1.92

Feel free raise your hand.

631.88

1.26

What might go wrong if I try to make the primary key myself?

633.14

4.56

Insert a value myself?

637.7

1.485

Let's go to [INAUDIBLE].

643.01

1.89

SPEAKER 2: Yeah, what we could do when we have to [INAUDIBLE] a lot of values,

644.9

5.04

like maybe like big data or something, is there a way to add it to a CSV file

649.94

6.87

or something rather than typing [? insert ?] [? into ?] tables?

656.81

2.915

SPEAKER 1: A good question.

659.725

1.125

I think you're onto something here, which

660.85

1.708

is we're inserting one row at a time, which could get easily repetitive.

662.558

3.042

So let me hold that thought for just a minute here

665.6

2.297

and focus on the primary keys before we see some more efficient ways

667.897

2.833

to actually add data to our table.

670.73

2.23

So I'm with you on this idea of maybe we don't want

672.96

2.84

to duplicate this primary key, right?

675.8

1.897

Maybe we could do a little better than that.

677.697

1.833

So I'll come back to my computer here.

679.53

2.25

And if I specify the primary key, I might actually

681.78

3.89

add a value that's already in there.

685.67

2.17

So I could, thankfully, leave it up to SQLite to actually increment

687.84

4.34