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How to Concat Rows Separated By A Space In Oracle?

2 minutes read

You can use the LISTAGG function in Oracle to concatenate rows separated by a space. The syntax for using LISTAGG is as follows:


SELECT LISTAGG(column_name, ' ') WITHIN GROUP (ORDER BY column_name) AS concatenated_string FROM table_name;


In this query, replace 'column_name' with the name of the column you want to concatenate and 'table_name' with the name of the table containing the data. The ' ' parameter inside the LISTAGG function specifies the separator you want to use between the concatenated values, in this case, a space.


By using this query, you can concatenate the values in the specified column separated by a space into a single string, which can be useful in various data manipulation and reporting tasks in Oracle.


How to combine rows into one string in Oracle?

You can use the LISTAGG function in Oracle to combine rows into one string. Here's an example query:

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SELECT department_name, LISTAGG(employee_name, ', ') WITHIN GROUP (ORDER BY employee_name) AS employees
FROM employees
GROUP BY department_name;


In this query, we are combining the employee names for each department into a single string, separated by commas. The LISTAGG function allows you to specify the delimiter and the ordering of the values in the string.


How to join rows delimited by a space in Oracle?

You can use the LISTAGG function in Oracle to join rows delimited by a space. Here is an example:


SELECT LISTAGG(column_name, ' ') WITHIN GROUP (ORDER BY order_column) AS concatenated FROM table_name;


In this example, "column_name" is the column you want to concatenate, "order_column" is the column by which you want to order the concatenated values, and "table_name" is the name of the table containing the data.


The LISTAGG function concatenates the values in the specified column with a space as the delimiter, and the WITHIN GROUP clause orders the concatenated values based on the values in the specified column.


How to merge rows in Oracle with a space separator?

You can merge rows in Oracle with a space separator using the LISTAGG function. Here is an example query that demonstrates how to achieve this:

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SELECT ID, LISTAGG(VALUE, ' ') WITHIN GROUP (ORDER BY ID) AS Merged_Values
FROM your_table
GROUP BY ID;


In this query:

  • Replace 'your_table' with the name of your table.
  • Replace 'ID' with the column that you want to group by.
  • Replace 'VALUE' with the column that you want to merge with a space separator.
  • The LISTAGG function concatenates the values from the 'VALUE' column with a space separator specified as the second parameter.


What is the concatenation operator in Oracle?

In Oracle, the concatenation operator is represented by two vertical bars (||). It is used to combine two or more strings together to create a single string. For example:


SELECT 'Hello' || ' ' || 'World' FROM dual;


This query would result in the output "Hello World" where the strings 'Hello' and 'World' have been concatenated together with a space in between.

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