How to Delete Part Of Value From Column In Teradata Sql?

To delete a part of a value from a column in Teradata SQL, you can use the UPDATE statement with the SUBSTRING function. Here is an example of how you can delete a specific part of a value from a column:

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UPDATE table_name
SET column_name = SUBSTRING(column_name FROM 1 FOR (POSITION('part_to_delete' IN column_name) - 1))
WHERE column_name LIKE '%part_to_delete%';

In the above example, table_name is the name of the table, column_name is the name of the column from which you want to delete a part of the value, and part_to_delete is the specific part of the value that you want to delete.

The SUBSTRING function is used to extract the substring before the part_to_delete in the column_name. The POSITION function finds the position of the part_to_delete in the column_name, and then we subtract 1 to get the substring before it.

Make sure to replace table_name, column_name, and part_to_delete with your actual table, column, and value to be deleted. This query will update the column by removing the specified part of the value.

What is the STRLEN function in Teradata SQL?

The STRLEN function in Teradata SQL is used to determine the length of a string. It takes a string as input and returns the number of characters in that string. The syntax for the STRLEN function is as follows:

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STRLEN(string)

Where string is the input string whose length needs to be calculated.

How to remove parentheses from a string in Teradata SQL?

One way to remove parentheses from a string in Teradata SQL is to use the REPLACE function. Here's an example query that demonstrates how to achieve this:

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SELECT 
    REPLACE(your_column, '(', '') AS modified_column
FROM 
    your_table;

In this query, your_column is the column containing the string with parentheses that you want to remove, and your_table is the table that contains this column. The REPLACE function is used to replace all instances of the opening parenthesis '(' with an empty string, effectively removing them from the string. The result will be displayed in a new column called modified_column.

You can modify this query as needed to suit your specific requirements.

What is the STRPOS function in Teradata SQL?

The STRPOS function in Teradata SQL is used to find the position of a substring within a string. It returns the position of the first occurrence of the substring within the input string. The syntax of the STRPOS function is as follows:

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STRPOS(input_string, substring)

Where:

• input_string is the string in which the position of the substring is to be found.
• substring is the substring whose position is to be found within the input string.

The function returns an integer value representing the position of the substring within the input string. If the substring is not found within the input string, the function will return 0.

How to delete leading spaces from a string in Teradata SQL?

To delete leading spaces from a string in Teradata SQL, you can use the TRIM function with the leading keyword. Here is an example of how to do this:

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SELECT TRIM(LEADING ' ' FROM '    hello world') AS trimmed_string;

In this example, the TRIM function removes any leading spaces from the string ' hello world', resulting in 'hello world'.