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Full Discussion: mysql query for multiple columns from multiple tables in a DB
Top Forums Web Development mysql query for multiple columns from multiple tables in a DB Post 302537015 by ilan on Wednesday 6th of July 2011 11:17:20 PM
Old 07-07-2011
mysql query for multiple columns from multiple tables in a DB
Say I have two tables like below..

status
Code:
HId	sName	dName	StartTime	EndTime
1	E	        E	        9:10	        10:10
2	E	        F	        9:15	        10:15
3	G	        H	        9:17	        10:00

logic
Code:
Id	devName	capacity	free	Line
1	E	        123	        34	1
2	E	        345	        45	1
3	G	        345	        23	0

status.HId and logical.Id denote the same value that is a id of a server
I'm trying to write a query to retrieve for a few columns in each table where logic.Line=1;

Code:
select HId, sName, dName, StartTime, capacity, free from status s, logical l WHERE s.HId=2 and l.Line=1;

expecting the output to be.. but the above query gives multiple lines of output..

Code:
HId	sName	dName	StartTime capacity	free
2	E	        F	        9:15        345	        45

i'm not sure if we can achieve with mysql joins here but want to take advice while i can read and do the above..
Last edited by pludi; 07-07-2011 at 05:02 AM..
 

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LEARN ABOUT DEBIAN

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.
	      Please notice this option isn't related to the terminal length as in a "80 culums terminal".

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do right to left (RTL) layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter and A4. Default is A4.

       Postscript points
	      Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch.

       --bottom-margin=bm
	      Set bottom margin. Default is 36 postscript points.

       --top-margin=tm
	      Set top margin. Default is 36 postscript points.

       --left-margin=lm
	      Set left margin. Default is 36 postscript points.

       --right-margin=rm
	      Set right margin. Default is 36 postscript points.

       --gutter-width=gw
	      Set gutter width. Default is 40 postscript points.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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