Databases
StackOverflow2013
Postsdbo
POErlang and PostgreSQL
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POErlang and PostgreSQL
    primarykey
    data
    text
    <p>I try to execute simple PostgreSQL query with erlang and epgsql.</p> <p>I do:</p> <pre><code>{ok, C} = pgsql:connect("localhost", "shk", "qwerty", [{database, "mydb"}]). &gt;&gt; {ok,&lt;0.34.0&gt;} </code></pre> <p>Then:</p> <pre><code>{ok, Cols, Rows} = pgsql:squery(C, "select * from users"). </code></pre> <p>But i got error:</p> <pre><code>=ERROR REPORT==== 27-Apr-2012::17:58:23 === ** State machine &lt;0.34.0&gt; terminating ** Last message in was {'EXIT',&lt;0.32.0&gt;, {{badmatch, {error, {error,'ð\236ð¨ð\230ð\221ð\232ð\220',&lt;&lt;"42P01"&gt;&gt;, &lt;&lt;208,190,209,130,208,189,208,190,209,136,208,181, 208,189,208,184,208,181,32,34,109,121,100,98,34, 32,208,189,208,181,32,209,129,209,131,209,137, 208,181,209,129,209,130,208,178,209,131,208,181, 209,130&gt;&gt;, [{position,&lt;&lt;"15"&gt;&gt;}]}}}, [{erl_eval,expr,3}]}} ** When State == ready ** Data == {state,undefined,&lt;0.35.0&gt;,5000, [{&lt;&lt;"application_name"&gt;&gt;,&lt;&lt;&gt;&gt;}, {&lt;&lt;"client_encoding"&gt;&gt;,&lt;&lt;"UTF8"&gt;&gt;}, {&lt;&lt;"DateStyle"&gt;&gt;,&lt;&lt;"ISO, DMY"&gt;&gt;}, {&lt;&lt;"integer_datetimes"&gt;&gt;,&lt;&lt;"on"&gt;&gt;}, {&lt;&lt;"IntervalStyle"&gt;&gt;,&lt;&lt;"postgres"&gt;&gt;}, {&lt;&lt;"is_superuser"&gt;&gt;,&lt;&lt;"off"&gt;&gt;}, {&lt;&lt;"server_encoding"&gt;&gt;,&lt;&lt;"UTF8"&gt;&gt;}, {&lt;&lt;"server_version"&gt;&gt;,&lt;&lt;"9.0.7"&gt;&gt;}, {&lt;&lt;"session_authorization"&gt;&gt;,&lt;&lt;"shk"&gt;&gt;}, {&lt;&lt;"standard_conforming_strings"&gt;&gt;,&lt;&lt;"off"&gt;&gt;}, {&lt;&lt;"TimeZone"&gt;&gt;,&lt;&lt;"posixrules"&gt;&gt;}], undefined,undefined,undefined, {30932,488494147}, {statement,undefined,undefined,undefined}, 73} ** Reason for termination = ** {{badmatch,{error,{error,'ð\236ð¨ð\230ð\221ð\232ð\220',&lt;&lt;"42P01"&gt;&gt;, &lt;&lt;208,190,209,130,208,189,208,190,209,136,208,181, 208,189,208,184,208,181,32,34,109,121,100,98,34, 32,208,189,208,181,32,209,129,209,131,209,137, 208,181,209,129,209,130,208,178,209,131,208,181, 209,130&gt;&gt;, [{position,&lt;&lt;"15"&gt;&gt;}]}}}, [{erl_eval,expr,3}]} </code></pre> <p>What's wrong i do? How can i fix it?</p> <p>Thank you.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. US0xAX
    1. US0xAX
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POErlang and PostgreSQL
      1. This table or related slice is empty.
      1. VTUpMod
    1. COIs your DB and your table called 'mydb'? Shouldn't the query be "select * from mydb.mytable"?
      singulars
      1. POErlang and PostgreSQL
      1. USIsac
    2. COMy db called 'mydb', table is 'users'.
      singulars
      1. POErlang and PostgreSQL
      1. US0xAX
    3. COWith "select * from mydb.users" i got the same error
      singulars
      1. POErlang and PostgreSQL
      1. US0xAX
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload