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How to Convert Vertical String Into Horizontal In Oracle?

3 minutes read

To convert a vertical string into a horizontal one in Oracle, you can use the LISTAGG function. This function aggregates multiple rows into a single row and concatenates the values into a single string. Here is an example of how you can use the LISTAGG function to convert a vertical string into a horizontal one:


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


In this query, column_name refers to the column that contains the vertical string values, and table_name is the name of the table where the column is located. The LISTAGG function concatenates the values in the specified column into a single string, and the WITHIN GROUP clause allows you to specify the order in which the values should be concatenated.


What is the command to convert vertical string into horizontal in Oracle?

You can use the LISTAGG function in Oracle to convert a vertical string into a horizontal one. Here is an example of how to use the LISTAGG function:

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


Replace column_name with the name of the column containing the vertical string, and table_name with the name of the table where the column is located. The WITHIN GROUP (ORDER BY column_name) clause is optional and is used to order the concatenated values.


This query will concatenate the values in the specified column into a single horizontal string, with each value separated by a space.


What is the memory consumption during the conversion of vertical string into horizontal in Oracle?

The memory consumption during the conversion of a vertical string into horizontal in Oracle will depend on the size of the string being converted and the method used for the conversion. If the string is large, it can consume a significant amount of memory during the conversion process.


In general, when converting a vertical string into a horizontal string in Oracle, the database will need to allocate memory for storing the converted string in the new format. This memory allocation will depend on the length of the original string, the number of characters in the string, and any additional memory overhead required by the conversion process.


It is recommended to be cautious when converting large strings into horizontal format to avoid excessive memory consumption and potential performance issues. It is also a good idea to monitor memory usage during the conversion process to ensure that the database has enough resources to handle the operation efficiently.


What is the role of normalization in converting vertical string into horizontal in Oracle?

Normalization is the process of organizing data in a database to reduce redundancy and dependency by breaking up tables into smaller, related tables.


In the context of converting vertical strings into horizontal values in Oracle, normalization can play a role in structuring the data in a way that allows for more efficient querying and processing of the information. By normalizing the data, you can separate the vertical string values into distinct columns, making it easier to work with the data in a horizontal format.


For example, if you have a table with a column that contains vertical string values separated by delimiters, you can use normalization techniques to split these values into individual columns. This can help improve data integrity, reduce duplication, and make it easier to analyze and manipulate the data.


Overall, normalization helps in converting vertical strings into horizontal values by structuring the data in a more organized and efficient manner, making it easier to work with and query.


How can I transform a vertical string into horizontal in Oracle?

You can use the LISTAGG function to transform a vertical string into horizontal in Oracle. Here's an example query:

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


Replace column_name with the name of the column containing the vertical string and table_name with the name of the table. This query will concatenate the values in the specified column into a single horizontal string, separated by commas.

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