Distinct result, display all columns
0
Suppose there are fields of Username, Logon, Roles, etc, etc
I want to query and display all fields, but username's output should be distinct
(select distinct(username), *)
What is the most accurate query?
query
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
0
Suppose there are fields of Username, Logon, Roles, etc, etc
I want to query and display all fields, but username's output should be distinct
(select distinct(username), *)
What is the most accurate query?
query
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
1
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago
add a comment |
0
0
0
Suppose there are fields of Username, Logon, Roles, etc, etc
I want to query and display all fields, but username's output should be distinct
(select distinct(username), *)
What is the most accurate query?
query
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Suppose there are fields of Username, Logon, Roles, etc, etc
I want to query and display all fields, but username's output should be distinct
(select distinct(username), *)
What is the most accurate query?
query
query
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 15 mins ago
user175623
asked 4 hours ago
user175623user175623
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 4 hours ago
user175623user175623
6
asked 4 hours ago
user175623user175623
6
6
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user175623 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
1
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago
add a comment |
What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
1
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago
What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
1
1
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago
add a comment |
1 Answer
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With username being a primary key of table;
select username,{otherfields} from table where logon='today'
will only every have a unique username in the output.
answered 2 hours ago
danblackdanblack
2,1161214
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
add a comment |
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0
With username being a primary key of table;
select username,{otherfields} from table where logon='today'
will only every have a unique username in the output.
answered 2 hours ago
danblackdanblack
2,1161214
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
add a comment |
0
With username being a primary key of table;
select username,{otherfields} from table where logon='today'
will only every have a unique username in the output.
answered 2 hours ago
danblackdanblack
2,1161214
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
add a comment |
0
0
0
With username being a primary key of table;
select username,{otherfields} from table where logon='today'
will only every have a unique username in the output.
answered 2 hours ago
danblackdanblack
2,1161214
With username being a primary key of table;
select username,{otherfields} from table where logon='today'
will only every have a unique username in the output.
answered 2 hours ago
danblackdanblack
2,1161214
answered 2 hours ago
danblackdanblack
2,1161214
answered 2 hours ago
danblackdanblack
2,1161214
answered 2 hours ago
danblackdanblack
2,1161214
2,1161214
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
add a comment |
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
Put your sample data, table structures and example data in the question WHEN YOU FIRST ASK IT. Edit the question and add it clearly formatted now! Try not to contradict yourself. You said username is the PK which obviously isn't the case if there are duplicates. Use a dbfiddle. See Why SELECT * is considered harmful
– danblack
1 hour ago
add a comment |
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What have you tried? Is username a unique or primary key? If not why not?
– danblack
4 hours ago
1
You need to provide more information here. If username should be distinct, but there are duplicate values in this column, how will you aggregate the data in other columns that varies? If it is already unique, then you don't need to do a distinct. Sample table schema, data and expected results will help get you assistance too.
– HandyD
4 hours ago
Username is PK. I only want username's output to be distinct. I am not worried about the display of other columns (logon, roles, etc). For example, select distinct(username), * from table where logon='today' and roles='admin'
– user175623
3 hours ago
A primary key by definition is unique. There is no need for a distinct anything, your username is unique no matter how you query it.
– danblack
2 hours ago