MySQL: Concatenate two information, return a virtual column and in sequence perform an INNER JOIN with the...












0















In my project, I need make a Column with Concat information, like this:
CONCAT('SIP/', name) AS sipAgent.



And this works, but when i try to make a INNER JOIN with the column sipAgent, has error :(



And after inner join i need to SUM the results for each result of



like that:



----------------------------------
| NAME | sipAgent | notAnswered |
----------------------------------
| aaa | SIP/aaa | 132 |
| bbb | SIP/bbb | 50 |
----------------------------------


Name is the reference of agent, sipAgent is 'SIP/' + name, and noAnswered is the number of rows returned in a inner join.



Here is my 'test-query':



SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM 'ipbx.tab_sippeers'

join 'queue_log' on tab_sippeers.sipAgent = queue_log.agent


But, is returning error...
Sorry for bad english, and thanks alot for help!










share|improve this question























  • edit your question with error also.

    – Madhur Sharma
    Nov 22 '18 at 12:29











  • It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57
















0















In my project, I need make a Column with Concat information, like this:
CONCAT('SIP/', name) AS sipAgent.



And this works, but when i try to make a INNER JOIN with the column sipAgent, has error :(



And after inner join i need to SUM the results for each result of



like that:



----------------------------------
| NAME | sipAgent | notAnswered |
----------------------------------
| aaa | SIP/aaa | 132 |
| bbb | SIP/bbb | 50 |
----------------------------------


Name is the reference of agent, sipAgent is 'SIP/' + name, and noAnswered is the number of rows returned in a inner join.



Here is my 'test-query':



SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM 'ipbx.tab_sippeers'

join 'queue_log' on tab_sippeers.sipAgent = queue_log.agent


But, is returning error...
Sorry for bad english, and thanks alot for help!










share|improve this question























  • edit your question with error also.

    – Madhur Sharma
    Nov 22 '18 at 12:29











  • It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57














0












0








0








In my project, I need make a Column with Concat information, like this:
CONCAT('SIP/', name) AS sipAgent.



And this works, but when i try to make a INNER JOIN with the column sipAgent, has error :(



And after inner join i need to SUM the results for each result of



like that:



----------------------------------
| NAME | sipAgent | notAnswered |
----------------------------------
| aaa | SIP/aaa | 132 |
| bbb | SIP/bbb | 50 |
----------------------------------


Name is the reference of agent, sipAgent is 'SIP/' + name, and noAnswered is the number of rows returned in a inner join.



Here is my 'test-query':



SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM 'ipbx.tab_sippeers'

join 'queue_log' on tab_sippeers.sipAgent = queue_log.agent


But, is returning error...
Sorry for bad english, and thanks alot for help!










share|improve this question














In my project, I need make a Column with Concat information, like this:
CONCAT('SIP/', name) AS sipAgent.



And this works, but when i try to make a INNER JOIN with the column sipAgent, has error :(



And after inner join i need to SUM the results for each result of



like that:



----------------------------------
| NAME | sipAgent | notAnswered |
----------------------------------
| aaa | SIP/aaa | 132 |
| bbb | SIP/bbb | 50 |
----------------------------------


Name is the reference of agent, sipAgent is 'SIP/' + name, and noAnswered is the number of rows returned in a inner join.



Here is my 'test-query':



SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM 'ipbx.tab_sippeers'

join 'queue_log' on tab_sippeers.sipAgent = queue_log.agent


But, is returning error...
Sorry for bad english, and thanks alot for help!







mysql join sum concat






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 22 '18 at 12:26









Rodrigo Roberto de AlmeidaRodrigo Roberto de Almeida

34




34













  • edit your question with error also.

    – Madhur Sharma
    Nov 22 '18 at 12:29











  • It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57



















  • edit your question with error also.

    – Madhur Sharma
    Nov 22 '18 at 12:29











  • It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57

















edit your question with error also.

– Madhur Sharma
Nov 22 '18 at 12:29





edit your question with error also.

– Madhur Sharma
Nov 22 '18 at 12:29













It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

– Madhur Bhaiya
Nov 22 '18 at 12:57





It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

– Madhur Bhaiya
Nov 22 '18 at 12:57












1 Answer
1






active

oldest

votes


















1














Query doesn't look right in other ways but you could concat in the join



   SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM `ipbx.tab_sippeers`
join `queue_log` on CONCAT('SIP/', tab_sippeers.name) = queue_log.agent;


and table names and column names should be enclose in backticks not single quotes if you want to enclose them at all.
When to use single quotes, double quotes, and back ticks in MySQL






share|improve this answer


























  • You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57











  • The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

    – Rodrigo Roberto de Almeida
    Nov 22 '18 at 13:12













  • It would help if you added sample data and expected output as text to the question.

    – P.Salmon
    Nov 22 '18 at 13:19











  • If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

    – P.Salmon
    Nov 22 '18 at 13:21











  • works, thanks alot!

    – Rodrigo Roberto de Almeida
    Nov 23 '18 at 12:42











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1 Answer
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1 Answer
1






active

oldest

votes









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oldest

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oldest

votes









1














Query doesn't look right in other ways but you could concat in the join



   SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM `ipbx.tab_sippeers`
join `queue_log` on CONCAT('SIP/', tab_sippeers.name) = queue_log.agent;


and table names and column names should be enclose in backticks not single quotes if you want to enclose them at all.
When to use single quotes, double quotes, and back ticks in MySQL






share|improve this answer


























  • You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57











  • The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

    – Rodrigo Roberto de Almeida
    Nov 22 '18 at 13:12













  • It would help if you added sample data and expected output as text to the question.

    – P.Salmon
    Nov 22 '18 at 13:19











  • If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

    – P.Salmon
    Nov 22 '18 at 13:21











  • works, thanks alot!

    – Rodrigo Roberto de Almeida
    Nov 23 '18 at 12:42
















1














Query doesn't look right in other ways but you could concat in the join



   SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM `ipbx.tab_sippeers`
join `queue_log` on CONCAT('SIP/', tab_sippeers.name) = queue_log.agent;


and table names and column names should be enclose in backticks not single quotes if you want to enclose them at all.
When to use single quotes, double quotes, and back ticks in MySQL






share|improve this answer


























  • You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57











  • The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

    – Rodrigo Roberto de Almeida
    Nov 22 '18 at 13:12













  • It would help if you added sample data and expected output as text to the question.

    – P.Salmon
    Nov 22 '18 at 13:19











  • If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

    – P.Salmon
    Nov 22 '18 at 13:21











  • works, thanks alot!

    – Rodrigo Roberto de Almeida
    Nov 23 '18 at 12:42














1












1








1







Query doesn't look right in other ways but you could concat in the join



   SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM `ipbx.tab_sippeers`
join `queue_log` on CONCAT('SIP/', tab_sippeers.name) = queue_log.agent;


and table names and column names should be enclose in backticks not single quotes if you want to enclose them at all.
When to use single quotes, double quotes, and back ticks in MySQL






share|improve this answer















Query doesn't look right in other ways but you could concat in the join



   SELECT *, CONCAT('SIP/', tab_sippeers.name) AS sipAgent, SUM(queue_log.event) as notAnswered
FROM `ipbx.tab_sippeers`
join `queue_log` on CONCAT('SIP/', tab_sippeers.name) = queue_log.agent;


and table names and column names should be enclose in backticks not single quotes if you want to enclose them at all.
When to use single quotes, double quotes, and back ticks in MySQL







share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 22 '18 at 12:55

























answered Nov 22 '18 at 12:50









P.SalmonP.Salmon

7,8872415




7,8872415













  • You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57











  • The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

    – Rodrigo Roberto de Almeida
    Nov 22 '18 at 13:12













  • It would help if you added sample data and expected output as text to the question.

    – P.Salmon
    Nov 22 '18 at 13:19











  • If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

    – P.Salmon
    Nov 22 '18 at 13:21











  • works, thanks alot!

    – Rodrigo Roberto de Almeida
    Nov 23 '18 at 12:42



















  • You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

    – Madhur Bhaiya
    Nov 22 '18 at 12:57











  • The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

    – Rodrigo Roberto de Almeida
    Nov 22 '18 at 13:12













  • It would help if you added sample data and expected output as text to the question.

    – P.Salmon
    Nov 22 '18 at 13:19











  • If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

    – P.Salmon
    Nov 22 '18 at 13:21











  • works, thanks alot!

    – Rodrigo Roberto de Almeida
    Nov 23 '18 at 12:42

















You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

– Madhur Bhaiya
Nov 22 '18 at 12:57





You can add this to answer: It is noteworthy that we cannot refer to evaluated expression aliases in the ON clause of JOIN.

– Madhur Bhaiya
Nov 22 '18 at 12:57













The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

– Rodrigo Roberto de Almeida
Nov 22 '18 at 13:12







The query worked in parts ... it is now bringing the column 'notAnswered', but return is always 0. And it is always bringing 1 line of return, I would need to return all registered agents this information. I forgot to point out also that the notAnswered is the result count of: sipAgent where the results are queue_log.event = RINGNOANSWER

– Rodrigo Roberto de Almeida
Nov 22 '18 at 13:12















It would help if you added sample data and expected output as text to the question.

– P.Salmon
Nov 22 '18 at 13:19





It would help if you added sample data and expected output as text to the question.

– P.Salmon
Nov 22 '18 at 13:19













If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

– P.Salmon
Nov 22 '18 at 13:21





If you use a group function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. - dev.mysql.com/doc/refman/8.0/en/group-by-functions.html

– P.Salmon
Nov 22 '18 at 13:21













works, thanks alot!

– Rodrigo Roberto de Almeida
Nov 23 '18 at 12:42





works, thanks alot!

– Rodrigo Roberto de Almeida
Nov 23 '18 at 12:42


















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