Data cleaning: Difference between revisions

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456 bytes added ,  18 September 2016
mNo edit summary
Line 347: Line 347:
WHERE LENGTH(TRIM( `column` )) != LENGTH( `column` );
WHERE LENGTH(TRIM( `column` )) != LENGTH( `column` );
</pre>
</pre>
==== other text look like whitespace ====
# [http://www.fileformat.info/info/unicode/char/3000/index.htm IDEOGRAPHIC SPACE] (全形空白, U+3000):
#* diaplay: <pre><nowiki><?php $string = "111" . json_decode('"\u3000"') . "222"; echo $string;?></nowiki></pre>
#* replace with space: <pre><nowiki><?php echo str_replace(json_decode('"\u3000"'), " ", $string);?></nowiki></pre>
# ASCII Vertical Tab \v
# ASCII Horizontal Tab (TAB) \t
# ASCII Backspace \b


== related pages ==
== related pages ==

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