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Cursor need it?
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* Cursor need it?
@ 2005-06-08 14:44 Lucas Hernndez <lucashdz@gmail.com>
  0 siblings, 0 replies; 2+ messages in thread

From: Lucas Hernndez @ 2005-06-08 14:44 UTC (permalink / raw)
  To: pgsql-sql

I am a new postgres user

I want to get a list of tables from pg_tables where tables are like 
‘%wo%’ (for example).. and then query that list ….

Select count(*) from tableVARIABLENAMEFROMFIRSTQUERY

In SQL SERVER I can do that using cursor but in postgresql I don’t 
understand how to use cursors

Here is what I am trying to do
for each table on the list
Select tablename, count(*) tables from ( list of tables)

tablename tables
table1 25
table2 35

Any Idea would be appreciated

Thanks

Lucas




^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* Re: Cursor need it?
@ 2005-06-08 15:23 KÖPFERL Robert <robert.koepferl@sonorys.at>
  0 siblings, 0 replies; 2+ messages in thread

From: KÖPFERL Robert @ 2005-06-08 15:23 UTC (permalink / raw)
  To: pgsql-sql



|
|I am a new postgres user
|
|I want to get a list of tables from pg_tables where tables are like 
|‘%wo%’ (for example).. and then query that list ….
|
|Select count(*) from tableVARIABLENAMEFROMFIRSTQUERY
|
|In SQL SERVER I can do that using cursor but in postgresql I don’t 
|understand how to use cursors

Sorry, but this is a SQL-Server. 
You are looking for cross table joins. Join the pg_class table (where you
get the table name) with another table which you want to query additional
data. Then select your columns off both tables.

select p.name, m.foo from pg_class p JOIN myinfo m ON p.name=m.info 
this is equal to
select p.name, m.foo from pg_class p, myinfo m  where p.name=m.info 

|
|Here is what I am trying to do
|for each table on the list
|Select tablename, count(*) tables from ( list of tables)
|
|tablename tables
|table1 25
|table2 35
|
|Any Idea would be appreciated
|
|Thanks
|
|Lucas
|
|
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|broadcast)---------------------------
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|majordomo@postgresql.org)
|



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2005-06-08 14:44 Cursor need it? Lucas Hernndez <lucashdz@gmail.com>
2005-06-08 15:23 Re: Cursor need it? KÖPFERL Robert <robert.koepferl@sonorys.at>

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