How do you assign the output of a SQL query to a Unix variable?
In first command you assign output of date command in “var” variable! $() or “ means assign the output of command. And in the second command you print value of the “var” variable. Now for your SQL query.
How do you assign the output of an SQL query to a variable?
The syntax for assigning a value to a SQL variable within a SELECT query is @ var_name := value , where var_name is the variable name and value is a value that you’re retrieving. The variable may be used in subsequent queries wherever an expression is allowed, such as in a WHERE clause or in an INSERT statement.
How do you assign grep output to a variable?
The syntax is:
- VAR=`command-name` VAR=”`grep word /path/to/file`” ## or ## VAR=$(command-name) VAR=”$(grep word /path/to/file)” …
- echo “Today is $(date)” ## or ## echo “Today is `date`” …
- todays=$(date) …
- echo “$todays” …
- myuser=”$(grep ‘^vivek’ /etc/passwd)” echo “$myuser”
6 янв. 2017 г.
How do I export SQL output to Excel in Unix?
Here is quick tip on how to easily export SQL results into an excel file.
- Step 1: Login into database using SQL PLUS.
- Step 2: Set markup using below command. SET MARKUP HTML ON.
- Step 3: Spool the output to a file. …
- Step 4: Run your SQL Query. …
- Step 5: Set the Spool Off.
- Step 6: Open the output XLS file to view the output.
How do I run a SQL script from Unix command line?
Running a Script as You Start SQL*Plus
- Follow the SQLPLUS command with your username, a slash, a space, @, and the name of the file: SQLPLUS HR @SALES. SQL*Plus starts, prompts for your password and runs the script.
- Include your username as the first line of the file. Follow the SQLPLUS command with @ and the filename.
How do I assign a variable in Oracle?
How to declare variable and use it in the same Oracle SQL script?
- Use a DECLARE section and insert the following SELECT statement in BEGIN and END; . Acces the variable using &stupidvar .
- Use the keyword DEFINE and access the variable.
- Using the keyword VARIABLE and access the the variable.
25 авг. 2010 г.
How do I assign multiple values to a variable in SQL?
- FYI, in SQL Server 2008 and above, the following syntax is also valid for inserting multiple explicit values into a table variable: `insert into @values values (‘A’),(‘B’),(‘C’) – Chiramisu Jun 21 ’13 at 23:36.
- Cautionary anecdote: I recently did something like this to make a query more maintainable…
Can you set variables in SQL?
Variables in SQL procedures are defined by using the DECLARE statement. Values can be assigned to variables using the SET statement or the SELECT INTO statement or as a default value when the variable is declared. … You can also assign the result of a GET DIAGNOSTICS statement to a variable.
How do you set a variable in a select statement?
If your select statement returns multiple values, your variable is assigned the last value that is returned. Use TOP 1 if the query returns multiple rows. You can use this, but remember that your query gives 1 result, multiple results will throw the exception.
What is the output of grep?
The grep command is used to search text or searches the given file for lines containing a match to the given strings or words. By default, grep displays the matching lines. Use grep to search for lines of text that match one or many regular expressions, and outputs only the matching lines.
Does grep support regex?
Grep Regular Expression
GNU grep supports three regular expression syntaxes, Basic, Extended, and Perl-compatible. In its simplest form, when no regular expression type is given, grep interpret search patterns as basic regular expressions.
How do you grep a string?
The grep command consists of three parts in its most basic form. The first part starts with grep , followed by the pattern that you are searching for. After the string comes the file name that the grep searches through. The command can contain many options, pattern variations, and file names.
How do I export SQL query results to Excel SQL Developer?
Steps to export query output to Excel in Oracle SQL Developer
- Step 1: Run your query. To start, you’ll need to run your query in SQL Developer. …
- Step 2: Open the Export Wizard. …
- Step 3: Select the Excel format and the location to export your file. …
- Step 4: Export the query output to Excel.
How do I export data from Unix to excel?
Just add a reformat to your unix file, create a comma separated file(CSV) at the output. Now FTP the CSV file to your windows system.
How do you write data into shell script in Excel?
I want to insert data from text file to excel using shell script nawk -v r=4 -v c=4 -v val=$a -F, ‘BEGIN{OFS=”,”}; NR != r; NR == r {$c = val; print}’ “file. csv” I used above one to insert $a value in 4th row, 4th column in an excel file. csv and it…