Statement of update to remove the 'white spaces '.

Database: Oracle 11.2.0.1.0

In the database, we have values in the columns that contain the 'white spaces' a few times before and/or after the value.  What is the best procedure to remove these extra white space?  I have given some examples below.

Account number InvoiceNumber
123INV-123
456INV-456
789

INV-456

123 456INV 123456

1st row, 5 white space before the value of a.

Line 2 has 5 white spaces after the value

Rank 3, has 5 spaces before and after the value

Tier 4, has 5 white spaces between the value < = it's alright

Essentially, I don't want to cut the sides LEFT and RIGHT only.  Every thing in the meantime doesn't seem to be a problem at this time.  Is the query below the best procedure to manage withdrawal?

Update table1

the AccountNumber value = trim (AccountNumber);

Hello

976563 wrote:

Database: Oracle 11.2.0.1.0

In the database, we have values in the columns that contain the 'white spaces' a few times before and/or after the value.  What is the best procedure to remove these extra white space?  I have given some examples below.

Account number InvoiceNumber
123 INV-123
456 INV-456
789

INV-456

123 456 INV 123456

1st row, 5 white space before the value of a.

Line 2 has 5 white spaces after the value

Rank 3, has 5 spaces before and after the value

Tier 4, has 5 white spaces between the value<==== this="" one="" is="">

Essentially, I don't want to cut the sides LEFT and RIGHT only.  Every thing in the meantime doesn't seem to be a problem at this time.  Is the query below the best procedure to manage withdrawal?

Update table1

the AccountNumber value = trim (AccountNumber);

The SET clause is the best way, but you can add a WHERE clause.  Without a WHERE clause, you will update every row of the table, including rows that are already perfect, who will be ineffective.

Try this:

UPDATE table1

SET AcountNumber = TRIM (account number)

WHERE AccountNumber <> TRIM (account number);

If AccountNUmebr is NULL, the conditon of WHERE clause evaluate to UNKNOWN, and if the line will be not updated unnecessarily.

Tags: Database

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