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.
Related
I have two scripts. One is named sqlscript.sql and the other is named script.sh I have all of the queries needed written in my sql script. They are just a bunch of update statements. For example:
UPDATE xxDev.SYS_PARAMS SET val = 'serverName' WHERE lower(name) = 'enginebaseurl';
I'm running the .sql script IN the .sh script. When the .sh script runs, I want it to prompt the user for a server name and take that user input and replace it in serverName in the sql statements.
I'm brand new to both bash scripting and this website, so I hope I'm making sense asking this question. I'm using PuTTY if that makes a difference at all.
Suppose you use MySQL, try something like:
# TODO: prompt user for server name and store it into variable serverName
serverName="get from user"
cat <<"EOF" | mysql -u user1 -p passwd -h server1 -P 3306 -D db1
UPDATE xxDev.SYS_PARAMS SET val = '$serverName' WHERE lower(name) = 'enginebaseurl';
EOF
So in this example, you embed the sql script into the .sh so that you don't have to maintain two files.
I would probably use a variable
set #val 'serverName'
UPDATE xxDev.SYS_PARAMS SET val = #val WHERE lower(name) = 'enginebaseurl';
You can split the sqlscript.sql into
set-val.sql
set #val 'serverName'
and the actual update statements. Then you can recreate the set-val.sql from your user input:
echo -n "enter server: "
read server
echo "set #val '$server' > set-val.sql
and then you forward both files to mysql:
cat set-val.sql sqlscript.sql | mysql
You should probably use this only for internal things, it seems a little fragile.
I'm going let you figure out how to pass a shell parameter into your sql command, but here's an incredibly cool way to query the user for the server name. It might even be POSIX compliant.
#!/bin/sh
echo -n "Hit me with that server name: "; read serverName
echo "${serverName}! Outstanding! Pick up \$200 when you pass Go!"
I have query which gives me result as
app_no
--------
(0 rows)
I need to get only the rows part and that too just the number. I am saving the result into a variable but I am not able to parse it.
napp=`psql -U postgres appdb -c "select appno from app.apps where properties&2048=1024
cap=$(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
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?
I have the following query which I am running using a batch file. In the batch file I use the following syntax:
echo populating Application table with values...
SET "installFile=%sqlDir%\Install\DataFiles\Insert_ApplicationNames.sql"
OSQL /n /i "%installFile%" /d%db% /U%user% /P%pswd% /S%serv%
echo
echo populated Application table with values in Insert_ApplicationNames.sql
echo
The sql shown below runs without any errors when executed from the SQL Management Studio, but it keeps erroring out when run as a part of the batch script. Could some one help me find what I may be doing wrong here?
Also, the rows do get inserted, but our nightly QA install breaks because of the error thrown by the batch script.
IF NOT EXISTS(SELECT * FROM Application WHERE name = '')
BEGIN
INSERT INTO Application
(Name)
VALUES
('')
END
GO
IF NOT EXISTS(SELECT * FROM Application WHERE name = 'App1.exe')
BEGIN
INSERT INTO Application
(Name)
VALUES
('App1.exe')
END
GO
IF NOT EXISTS(SELECT * FROM Application WHERE name = 'App2.exe')
BEGIN
INSERT INTO Application
(Name)
VALUES
('App2.exe')
END
GO is the (default) batch separator keyword in Management Studio, but it isn't a real SQL keyword (i.e., SQL Server doesn't recognize it).
Remove those from your script -- in the script you've provided, they are irrelevant anyway -- and you should be good to, um, go.
Curious whether your variables should be right up against the switches. Try this?
OSQL -n -i "%installFile%" -d %db% -U %user% -P %pswd% -S %serv%
What happens when you use the line above with your known good values right in the command?
OSQL -n -i "C:\foo.sql" -d MyDB -U MyUser -P MyPwd -S MyServ
Is there any way to retreive the result set of a sql query in a local variable; the query is to be run in a batch file. What I am trying to do is something like this:
set varname = osql -S%dstserver% -d%dstDB% -Q"SELECT name from table_name where Id = %siteId%" %osqluser% -b
varname is my local variable.
I am quite new in sql so any help would be greatly appreciated1
Write the result to the file and then read the file. In your case you need to read the first line (and possibly trim it).
Add following parameters to your query:
osql -S%dstserver% -d%dstDB% -Q"SET NOCOUNT ON;SELECT name from table_name where Id = %siteId%" %osqluser% -b -w 9999 -h-1 -o tempres.txt
-o ...: output file (which you need to read later)
-h-1: disable header
-w 9999: to ensure that it handles correctly cases when your name is longer then default 80 characters
SET NOCOUNT ON; before real query to disable the status string like (1 row affected)
You can use for /f to iterate over the output of a command:
for /f "usebackq delims=" %%x in (`your command`) do ...
You don't need a temporary file at all; it doesn't gain you anything here (except having to think about where you may have write permissions and remember to delete the file afterwards).
for iterates line-wise over the output, tokenizing as it goes. That's why there is a delims= at the end which effectively disables any tokenizing so you don't get your output split at spaces. There are other options, such as skip=n which will skip n lines before starting processing which you can use to ignore a header or so.
Inside that loop you can then do the following:
for /f "usebackq delims=" %%x in (`your command`) do set VAR=%%x
Be very careful what you do afterwards with that variable, though, as it may contain characters the shell treats as special, such as >, <, &, etc. You may create yourself here some sort of Batch Injection vulnerability when doing something like the following:
echo %VAR%
and someone decides to put the following string in his name:
foo & rd /s q \
If you know that only a single line with usable content returns and the rest is useless junk then you can break the loop prematurely:
for /f "usebackq delims=" %%x in (`your command`) do set VAR=%%x&goto break
:break
Use set /p:
osql -S%dstserver% -d%dstDB% -Q"SET NOCOUNT ON;SELECT name from table_name where Id = %siteId%" %osqluser% -b -w 9999 -h-1 -o tempres.txt
set /p varname=<tempres.txt
(Borrowing osql parameters from van's answer)
You can write the result to a file containing set statements.
#echo off
osql -E -S servername -h-1 -Q "set nocount on; select 'set var=42'" > c:\set.bat
call c:\set.bat
echo %VAR%
This results in 42 being written to the screen. To select a name from a table, use a SQL statement like:
select 'set var=' + name from table_name where Id = %siteId%