12-10-2008
!! what is this means
I have a script like
select * from table
!!
what those exclamation marks mean
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a command called
cd $HDRROOT/release/tools/cfg
My query is what it means?
tHat is.... $HDRROOT part is not clear.
If I put this command it says path not found....
I doubt that $HDRROOT is trying to mean smething I am not clear of.
PL help......... (4 Replies)
Discussion started by: rraajjiibb
4 Replies
2. UNIX for Dummies Questions & Answers
I found a file in my base folder width the name replace.sh and width the text string.
sed -i "s/$1/$2/g" `grep -ir $1 ./*|grep -v '.svn'|cut -d: -f1`
Wat does it mean and what does it do? (1 Reply)
Discussion started by: samarn
1 Replies
3. Shell Programming and Scripting
hey, what's $$varname in a script? I used to see $varname only. search on google didn't help. thanks. (4 Replies)
Discussion started by: patiobarbecue
4 Replies
4. UNIX for Dummies Questions & Answers
Can you please tell me what this means?
use grep to find from the file myfile.txt all lines containing the sequence tt but not more 2 ts?
I have no idea. (2 Replies)
Discussion started by: rushhour
2 Replies
5. UNIX for Advanced & Expert Users
:) Hi,
In some script i got these regular expression
like ,
n=$#
and
for i in $*
can anybody let me know, what does it means (5 Replies)
Discussion started by: deb.simply
5 Replies
6. UNIX for Dummies Questions & Answers
I can not find out what the %U means in the following command:
ooffice -calc %U (2 Replies)
Discussion started by: borobudur
2 Replies
7. Shell Programming and Scripting
Hi,
I have seen in some ksh script, that we are executing shell scripts inside other shell script as
. variable.sh
What is . here? Their is space between . and variabloe. And why we are not executing it like ./variable.sh? I know that . signifies current directory , but what its... (2 Replies)
Discussion started by: jatanig
2 Replies
8. Programming
#define abc '\xE8' (7 Replies)
Discussion started by: kamlesh33
7 Replies
9. UNIX for Beginners Questions & Answers
HI
what does the $(NF) means.
here i want to understand the working.
what i know is that in awk NF argument will tell number of column in a file
i have below file
alpha
a
beta
b
if i use command cat kv | paste - - | awk '{print $1," "$2 "------>"$(NF)}'
i get the o/p as
alpha ... (3 Replies)
Discussion started by: scriptor
3 Replies
LEARN ABOUT REDHAT
create_table_as
CREATE TABLE
AS(7) SQL Commands CREATE TABLE AS(7)
NAME
CREATE TABLE AS - create a new table from the results of a query
SYNOPSIS
CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name [ (column_name [, ...] ) ]
AS query
DESCRIPTION
CREATE TABLE AS creates a table and fills it with data computed by a SELECT command. The table columns have the names and data types asso-
ciated with the output columns of the SELECT (except that you can override the column names by giving an explicit list of new column
names).
CREATE TABLE AS bears some resemblance to creating a view, but it is really quite different: it creates a new table and evaluates the query
just once to fill the new table initially. The new table will not track subsequent changes to the source tables of the query. In contrast,
a view re-evaluates its defining SELECT statement whenever it is queried.
PARAMETERS
[LOCAL] TEMPORARY or [LOCAL] TEMP
If specified, the table is created as a temporary table. Refer to CREATE TABLE [create_table(7)] for details.
table_name
The name (optionally schema-qualified) of the table to be created.
column_name
The name of a column in the new table. Multiple column names can be specified using a comma-delimited list of column names. If col-
umn names are not provided, they are taken from the output column names of the query.
query A query statement (that is, a SELECT command). Refer to SELECT [select(7)] for a description of the allowed syntax.
DIAGNOSTICS
Refer to CREATE TABLE [create_table(7)] and SELECT [select(7)] for a summary of possible output messages.
NOTES
This command is functionally equivalent to SELECT INTO [select_into(7)], but it is preferred since it is less likely to be confused with
other uses of the SELECT ... INTO syntax.
COMPATIBILITY
This command is modeled after an Oracle feature. There is no command with equivalent functionality in SQL92 or SQL99. However, a combina-
tion of CREATE TABLE and INSERT ... SELECT can accomplish the same thing with little more effort.
HISTORY
The CREATE TABLE AS command has been available since PostgreSQL 6.3.
SEE ALSO
CREATE TABLE [create_table(7)], CREATE VIEW [create_view(l)], SELECT [select(l)], SELECT INTO [select_into(l)]
SQL - Language Statements 2002-11-22 CREATE TABLE AS(7)