I have query which gives me result as
app_no
--------
(0 rows)
I need to get only the rows part and that too just the number. I am saving the result into a variable but I am not able to parse it.
napp=`psql -U postgres appdb -c "select appno from app.apps where properties&2048=1024
cap=$(echo "$napp"|sed -n 's/[0-9][0-9] rows/\1/p')
echo "$cap"
I just need number of rows and that too just number.
If you need the number of appno entries that match, then you should probably use:
SELECT COUNT(*) FROM app.apps WHERE properties & 2048 = 1024
but the answer will always be 0 because the condition is always going to give 0 or false. You need the same bit twice, either both 1024 or both 2048.
SELECT COUNT(*) FROM app.apps WHERE properties & 1024 = 1024
SELECT COUNT(*) FROM app.apps WHERE properties & 2048 = 2048
SQL interfaces that insist on headings and summaries are a nuisance when shell scripting. However, the psql manual suggests that -q and -t may help (with -A too, perhaps):
-A or --no-align
Switches to unaligned output mode. (The default output mode is otherwise aligned.)
-q or --quiet
Specifies that psql should do its work quietly. By default, it prints welcome messages and various informational output. If this option is used, none of this happens. This is useful with the -c option. Within psql you can also set the QUIET variable to achieve the same effect.
-t or --tuples-only
Turn off printing of column names and result row count footers, etc. This is equivalent to the \t command.
If you want to cut the string as-is :
napp=$(psql -U postgres appdb -c "
select appno frpm app.apps
where properties&2048=1024;"
)
cap=$(echo "$napp" | sed -nr 's/.*\(([0-9]+) rows.*/\1/p')
echo "$cap"
But a better solution is the Jonathan Leffler's one
Related
Here's the output of psql -q -t -c "SELECT 1;"
1
Time: 0.379 ms
It should be possible, but I can't find a way to prevent the execution time from being printed at the bottom - is there a way to prevent it? (Note: I'm already specifying the quiet mode and tuples only flags, to no avail)
Adding -A ignores the .psqlrc file and does the trick
I want to put a counted value from a sql query into a variable of powershell...? If i run the following command:
sqlcmd -S "ms-sql-1264" -d "ShellPlus" -q "SET ANSI_WARNINGS OFF; SET NOCOUNT ON; SELECT COUNT(InternalMeasurementID) as number_of_running_measurements FROM [ShellPlus].[dbo].[Measurements] WHERE Archived = 0 AND ClinicalInfo NOT LIKE '%PSG%' AND Classification NOT LIKE '%TEST' AND Classification NOT LIKE '%RESEARCH%' AND Status = 2"
I get the result:
PS H:\> C:\install\powershell scripts\mail sturen lopend EEG\test_sql.ps1
number_of_running_measurements
------------------------------
0
but the program won't stop...?
And i want to create an if statement with the value "number of running measurements"
Anyone?
Best regards,
Thijs
Sqlcmd is different from most Windows applications that it is case sensitive. That is, switches -q and -Q have different purposes.
-q "cmdline query"
-Q "cmdline query" (and exit)
Since lower case q means to query without exit, change it to upper case q for query and exit behavior.
I need a variable to keep the results retrieved from a query (Sybase) that´s in a script.
I have built the following script, it works fine I get the desired result when I run it
Script: EXECUTE_DAILY:
isql -U database_dba -P password <<EOF!
select the_name from table_name where m_num="NUMB912" and date="17/01/2019"
go
quit
EOF!
echo "All Done"
Output:
"EXECUTE_DAILY" 97 lines, 293 characters
user#zp01$ ./EXECUTE_DAILY
the_name
-----------------------------------
NAME912
(1 row affected)
But now I would like to keep the output(the_name: NAME912) in a variable.
So far this is basically what I'm trying with no success.
variable=$(isql -U database_dba -P password -se "select the_name from table_name where m_num="NUMB912" and date="17/01/2019" ")
But, is not working. I can't save NAME912 in a variable.
You need to parse the output for the desired string/piece-of-data that you wish to store in your variable. I tend to make my life a bit easier by making sure I can easily/quickly search/parse out what I want.
Keeping a few issues in mind ...
I tend to use isql -s"|" -w10000 to ensure (most of the time) that a) the result set has all columns delimited with the pipe ('|') and b) a single row of data does not span multiple rows; the pipe delimiter makes it easier to parse out columns that may contain white space; obviously (?) use a different delimiter if a pipe may be part of your actual data
to make parsing of the isql output a bit easier I tend to add a unique, grep-able (literal) string to the rows that I'm looking to search/parse
some databases (eg, SQLAnywhere, Oracle) tend to mimic a literal value as the column header if said literal string has not been assigned an explicit alias/header; this means that if you do a simple search on your literal string then you'll get a match for the result set header as well as the actual data row
I tend to capture all isql output to a temporary file; this allows for easier follow-on processing, eg, error checking, data parsing, dumping contents to a logfile, etc
So, with the above in mind my code typically looks something like:
$ outfile=/tmp/.$$.isql.outfile
$ isql -s"|" -w10000 -U database_dba -P password <<-EOF > ${outfile} 2>&1
-- 'GREP'||'ME' ensures that 'GREPME' only shows up in the data row
select 'GREP'||'ME',the_name
from table_name
where m_num = "NUMB912"
and date = "17/01/2019"
go
EOF
$ cat ${outfile}
... snip ...
|'GREP'||'ME'|the_name | # notice the default column header = 'GREP'||'ME' which won't match my search for 'GREPME'
|------------|----------|
|GREPME |NAME912 | # this is the line I want to search/parse
... snip ...
$ read -r namevar < <(egrep GREPME ${outfile} | awk -F"|" '{print $3}')
$ echo ${namevar}
NAME912
I am trying to delete last row in the file generated by nzsql.Please find the below query.
nzsql -A -c "SELECT * FROM AM_MAS_DIVISION_DIM" > abc.out
When I execute this query the output will be generated and stored in abc.out.This will include both header columns as well as some time information at the bottom.But I don't need the bottom metadata and want to keep only my header columns. How can I do this using only nzsql.Please help me.Thanks in advance.
use -r flag in the nzsql command to avoid getting that row [assuming the metadata referred in question is the row count summary line, ex: (3 rows)]
-r Suppresses the row count that is displayed at the end of the SQL output.
reference: http://pic.dhe.ibm.com/infocenter/ntz/v7r0m3/index.jsp?topic=%2Fcom.ibm.nz.adm.doc%2Fr_sysadm_nzsql_command.html
Why don't you just pipe the output to a unix command to remove it? I think something like this will work:
nzsql -A -c "SELECT * FROM AM_MAS_DIVISION_DIM" | sed '$d' > abc.out
Seems to be a recommended solution for getting rid of the last line (although ed, gawk, and other tools can handle it).
I would like to perform a scalar database query and return the result into a variable in a batch file.
How would one do this? The closest I example in our system that I see is if I return an exit code based on a scalar query result.
Z:\SQL2005\90\Tools\Binn\sqlcmd -S servername -dCLASS -E -Q "EXIT(select case run_type when 'Q' then 200 else 100 end from cycle_date where cycle = '1')">NUL
if %errorlevel% == 200 call %SQLSERVER%
QRTLY.BAT
if %errorlevel% == 100 call %SQLSERVER%
MTHLY.BAT
Can someone help me with the syntax?
Here's some sqlcmd help info:
-v var = value[ var=value...]
Creates a sqlcmdscripting variable that can be used in a sqlcmd script. Enclose the value in quotation marks if the value contains spaces. You can specify multiple var="values" values. If there are errors in any of the values specified, sqlcmd generates an error message and then exits.
sqlcmd -v MyVar1=something MyVar2="some thing"
sqlcmd -v MyVar1=something -v MyVar2="some thing"
-x disable variable substitution
Causes sqlcmd to ignore scripting variables. This is useful when a script contains many INSERT statements that may contain strings that have the same format as regular variables, such as $(variable_name).
How about saving it to a file without headers then reading the contents back in?
sqlcmd -S(local)\SQLExpress -dMyDatabase -Umyuser -Pmypassword -W -h -1 -Q "SELECT Top 1 MyValue FROM MyTable" -o sqlcmdoutput.txt
set /p x= <sqlcmdoutput.txt
del sqlcmdoutput.txt
echo My scalar value is %x%
I use this in a batch file. It returns the LogicalFilename for a SQL Server Database data file. This only works if there is one data file in the DB.
So the result is the environment variable DATABASEFILENAME is set to say AdventureWorks_Data.
FOR /F "usebackq tokens=1" %%i IN (`sqlcmd -w200 -h-1 -E -Q"set nocount on; Select df.name From sysdatabases as d Inner Join sysaltfiles as df on d.dbid=df.dbid Where d.name ='$(DatabaseName)' and df.Fileid =1"`) DO set DATABASEFILENAME=%%i
Have you looked at sqlcmd?