Mixing
What does the vertical pipe slash operator do?
6
I'm wondering what pipe slash |/ does in,
SET equal_area_radius = |/area/pi();
The statement works and it definitely changes the value:
SELECT |/125.555/pi(); -- returns: 6.32181918120139
SELECT 125.555/pi(); -- returns: 39.9653977598058
What does the pipe-slash operator |/ do?
postgresql operator
edited Jan 9 at 23:36
Evan Carroll
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
add a comment |
6
I'm wondering what pipe slash |/ does in,
SET equal_area_radius = |/area/pi();
The statement works and it definitely changes the value:
SELECT |/125.555/pi(); -- returns: 6.32181918120139
SELECT 125.555/pi(); -- returns: 39.9653977598058
What does the pipe-slash operator |/ do?
postgresql operator
edited Jan 9 at 23:36
Evan Carroll
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
add a comment |
6
6
6
I'm wondering what pipe slash |/ does in,
SET equal_area_radius = |/area/pi();
The statement works and it definitely changes the value:
SELECT |/125.555/pi(); -- returns: 6.32181918120139
SELECT 125.555/pi(); -- returns: 39.9653977598058
What does the pipe-slash operator |/ do?
postgresql operator
edited Jan 9 at 23:36
Evan Carroll
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
I'm wondering what pipe slash |/ does in,
SET equal_area_radius = |/area/pi();
The statement works and it definitely changes the value:
SELECT |/125.555/pi(); -- returns: 6.32181918120139
SELECT 125.555/pi(); -- returns: 39.9653977598058
What does the pipe-slash operator |/ do?
postgresql operator
postgresql operator
edited Jan 9 at 23:36
Evan Carroll
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
edited Jan 9 at 23:36
Evan Carroll
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
edited Jan 9 at 23:36
Evan Carroll
32k968219
edited Jan 9 at 23:36
Evan Carroll
32k968219
edited Jan 9 at 23:36
Evan Carroll
32k968219
32k968219
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
asked Jan 9 at 13:28
Jay CumminsJay Cummins
182210
182210
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
5
The |/ operator calculates the square root
postgres> select |/16, sqrt(16);
?column? | sqrt
----------+------
4 | 4
(1 row)
So |/125.555/pi() is equivalent to sqrt(125.555/pi())
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
@a_horse funny that the|/operator has lower precedence than/an*.
– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which|/is supposed to suggest, is often used with a long expression underneath it. this would only work if|/has low precedence.
– Ross Presser
Jan 17 at 4:09
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
5
The |/ operator calculates the square root
postgres> select |/16, sqrt(16);
?column? | sqrt
----------+------
4 | 4
(1 row)
So |/125.555/pi() is equivalent to sqrt(125.555/pi())
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
@a_horse funny that the|/operator has lower precedence than/an*.
– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which|/is supposed to suggest, is often used with a long expression underneath it. this would only work if|/has low precedence.
– Ross Presser
Jan 17 at 4:09
add a comment |
5
The |/ operator calculates the square root
postgres> select |/16, sqrt(16);
?column? | sqrt
----------+------
4 | 4
(1 row)
So |/125.555/pi() is equivalent to sqrt(125.555/pi())
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
@a_horse funny that the|/operator has lower precedence than/an*.
– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which|/is supposed to suggest, is often used with a long expression underneath it. this would only work if|/has low precedence.
– Ross Presser
Jan 17 at 4:09
add a comment |
5
5
5
The |/ operator calculates the square root
postgres> select |/16, sqrt(16);
?column? | sqrt
----------+------
4 | 4
(1 row)
So |/125.555/pi() is equivalent to sqrt(125.555/pi())
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
The |/ operator calculates the square root
postgres> select |/16, sqrt(16);
?column? | sqrt
----------+------
4 | 4
(1 row)
So |/125.555/pi() is equivalent to sqrt(125.555/pi())
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
answered Jan 9 at 13:30
a_horse_with_no_namea_horse_with_no_name
39.4k775112
39.4k775112
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
@a_horse funny that the|/operator has lower precedence than/an*.
– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which|/is supposed to suggest, is often used with a long expression underneath it. this would only work if|/has low precedence.
– Ross Presser
Jan 17 at 4:09
add a comment |
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
@a_horse funny that the|/operator has lower precedence than/an*.
– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which|/is supposed to suggest, is often used with a long expression underneath it. this would only work if|/has low precedence.
– Ross Presser
Jan 17 at 4:09
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
Sure enough--looked at the site where I copied the statement from and they had this: i.imgur.com/5twDykK.png I should have worked that one out. Thanks!
– Jay Cummins
Jan 9 at 13:41
1
1
@a_horse funny that the
|/ operator has lower precedence than / an *.– ypercubeᵀᴹ
Jan 9 at 15:01
@a_horse funny that the
|/ operator has lower precedence than / an *.– ypercubeᵀᴹ
Jan 9 at 15:01
it makes sense. in math, the radical symbol, which
|/ is supposed to suggest, is often used with a long expression underneath it. this would only work if |/ has low precedence.– Ross Presser
Jan 17 at 4:09
it makes sense. in math, the radical symbol, which
|/ is supposed to suggest, is often used with a long expression underneath it. this would only work if |/ has low precedence.– Ross Presser
Jan 17 at 4:09
add a comment |
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