The following example demonstrates functions that can be used to clean up strings. These functions include the following:
TRIM- remove leading and trailing whitespace. See TRIM Function.REMOVEWHITESPACE- remove leading and trailing whitespace and all whitespace in between. See REMOVEWHITESPACE Function.REMOVESYMBOLS- remove all characters that are not alpha-numeric or whitespace. See REMOVESYMBOLS Function.
Source:
In the following (space) and (tab) indicate space keys and tabs, respectively. Carriage return and newline characters are also supported by whitespace functions.
| Strings | source |
|---|---|
| String01 | this source(space)(space) |
| String02 | (tab)(tab)this source |
| String03 | (tab)(tab)this source(space)(space) |
| String04 | this source's? |
| String05 | Why, you @#$%^&*()! |
| String06 | this söurce |
| String07 | (space)this söurce |
| String08 | à mañana |
Transformation:
The following transformation steps generate new columns using each of the string cleanup functions:
| Transformation Name | New formula |
|---|---|
| Parameter: Formula type | Single row formula |
| Parameter: Formula | TRIM(source) |
| Parameter: New column name | 'trim_source' |
| Transformation Name | New formula |
|---|---|
| Parameter: Formula type | Single row formula |
| Parameter: Formula | REMOVEWHITESPACE(source) |
| Parameter: New column name | 'removewhitespace_source' |
| Transformation Name | New formula |
|---|---|
| Parameter: Formula type | Single row formula |
| Parameter: Formula | REMOVESYMBOLS(source) |
| Parameter: New column name | 'removesymbols_source' |
Results:
| Strings | source | removesymbols_source | removewhitespace_source | trim_source |
|---|---|---|---|---|
| String01 | this source(space)(space) | this source(space)(space) | thissource | this source |
| String02 | (tab)(tab)this source | (tab)(tab)this source | thissource | this source |
| String03 | (tab)(tab)this source(space)(space) | (tab)(tab)this source(space)(space) | thissource | this source |
| String04 | this source's? | this sources | thissource's? | this source's? |
| String05 | "Why, you @#$%^&*()!" | Why you | Why,you@#$%^&*()! | Why, you @#$%^&*()! |
| String06 | this söurce | this söurce | thissöurce | this söurce |
| String07 | (space)this söurce | (space)this söurce | thissöurce | this söurce |
| String08 | à mañana | à mañana | àmañana | à mañana |
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