Aug 02, 2015 at a shell prompt on your linux postgres server to connect (you will probably need other command line options for usernames and passwords etc.). Once connected you should use the dt command to display a list of tables and compare it with the source database. If these look correct, try some simple queries such as.
This chapter explains various methods of accessing the database. Assume that we have already created a database in our previous chapter. You can select the database using either of the following methods −
Assume you have already launched your PostgreSQL client and you have landed at the following SQL prompt −
You can check the available database list using l, i.e., backslash el command as follows −
Now, type the following command to connect/select a desired database; here, we will connect to the testdb database.
You can select your database from the command prompt itself at the time when you login to your database. Following is a simple example −
You are now logged into PostgreSQL testdb and ready to execute your commands inside testdb. To exit from the database, you can use the command q.
Here is a refinement of my psql.bat file that I just received from a senior member at utteracces.com
cd 'program files'
cd postgreSQL
cd 8.1
cd bin
psql -U postgres template1
---------------------------------
You could shorten this to
Code:
---------------------------------
cd 'Program FilespostgreSQL8.1bin'
psql -U postgres template1
---------------------------------
You also might want to ensure that the user is 'on' the correct drive (most likely this is the C: drive). If so:
Code:
---------------------------------
c:
cd 'Program FilespostgreSQL8.1bin'
psql -U postgres template1
---------------------------------
And if you don't want any echoing of the commands to the command window (wouldn't be necessary if this is used in a shortcut or other non-console situation):
Code:
---------------------------------
@echo off
c:
cd 'Program FilespostgreSQL8.1bin'
psql -U postgres template1
---------------------------------
And, here is my reply:
For a long time, I did not know how to use notepad to save something with a suffix other than .txt
and then someone showed me that if you 'psql.bat' , and choose allfiles type, then it will save with the .bat ending.
Before I learned that, I used to save as .txt, then go to the dos prompt and say REN *.TXT *.BAT (in a folder which has only my .txt file).
It also helped me to fine a freeware text editor called pspad which helps a lot with such tasks, as well as html and php.
Philippe Salama <karebacnyc(at)yahoo(dot)com> wrote: Thanks for your help! And thanks to your help, I was able to figure out the following, as a psql.bat file on drive C:
cd program files
cd postgreSQL
cd 8.1
cd bin
psql -U postgres template1
I could not figure out how to make a path work in the .bat file if there is a space in PROGRAM FILES. But it words if I just to a CD to each directory.
I have a paperback on PostgreSQL in which most of the exercises use the command line prompt. Although I have found admin programs that allow me to access PostgreSQL nicely, I want to learn about the command line.
I also have a 1984 book on SQL by Lantimes, and I put all the exercise tables int o MySQL. Then, I exported the tables to an SQL script, and modified the script so that it would run in PostgreSQL. If anyone is interested, I can provide that script.
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I would also like to go through the some of Joe Celko's books, like SQL for Smarties, and I plan to put the test tables into PostgreSQL and also MySQL.
But if anyone has any test tables from SQL instruction books, let me know.
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I will be happy to share what I have with others if there is some interest.
I feel that if the test data for such SQL exercises is made available on the Internet, then it will encourage more people to learn SQL.
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