okay, we have a. now what? suppose i need these two values every week on new data
TRANSCRIPT
![Page 1: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/1.jpg)
Okay, we have a
![Page 2: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/2.jpg)
Okay, we have a
Now what?
![Page 3: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/3.jpg)
Suppose I need these two valuesEvery week
on new data
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Don’t paste!
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• Make repeatable
analyses (without
clicking)• Easily add data
![Page 6: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/6.jpg)
Structured query language
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Structured query language
• Developed at IBM
![Page 8: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/8.jpg)
Structured query language
• Developed at IBM• Usually NOT considered
a programming language
![Page 9: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/9.jpg)
Structured query language
• Developed at IBM• Usually NOT considered
a programming language
• But a “domain specific language”
![Page 10: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/10.jpg)
Structured query language
• Developed at IBM• Usually NOT considered
a programming language
• But a “domain specific language”
• Aimed at analyzing and manipulating DATA
![Page 11: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/11.jpg)
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![Page 19: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/19.jpg)
Suppose I need these two valuesEvery week
on new data
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![Page 21: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/21.jpg)
Where is
like ‘filter’
in Excel
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![Page 23: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/23.jpg)
But we need
temperature?
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In Excel, we
did a lookup
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![Page 26: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/26.jpg)
![Page 27: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/27.jpg)
Temperatur
e is here
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To fix a bit (move
rows up)
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This results in
Carthesian
product
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![Page 35: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/35.jpg)
![Page 36: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/36.jpg)
This is called a ‘JOIN’
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![Page 38: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/38.jpg)
![Page 39: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/39.jpg)
Very similar to
VLOOKUP
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![Page 41: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/41.jpg)
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We have a
temperatur
e field now
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![Page 45: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/45.jpg)
We have the
filter
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We still need to
show: Machine &
temperature
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Benefit over Excel:
We can have
multiple such
queries
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Benefit over Excel:
We can have
multiple such
queries
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We have the
right data
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We have the
right dataBut! We
need ‘pivot like’
summary on average
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AVG of what?
Of everything?
Per machine?
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AVG of what?
Of everything?
Per machine?
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Almost there!
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Almost there!
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Suppose I need these two valuesEvery week
on new data
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Remember lecture
1?
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• Make repeatable
analyses (without
clicking)• Easily add data
![Page 80: Okay, we have a. Now what? Suppose I need these two values Every week on new data](https://reader035.vdocuments.net/reader035/viewer/2022062805/5697bfda1a28abf838cb0271/html5/thumbnails/80.jpg)
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Can’t pick
field names now
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We made an easily
repeatable
analysis!