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Data cleaning: Difference between revisions
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# MySQL: {{kbd | key = SELECT * FROM table_name WHERE LENGTH(TRIM( column_name )) != 0;}} [http://sqlfiddle.com/#!2/f491c/1/0 demo] | # MySQL: {{kbd | key = SELECT * FROM table_name WHERE LENGTH(TRIM( column_name )) != 0;}} [http://sqlfiddle.com/#!2/f491c/1/0 demo] | ||
== remove first, last or certain characters from text == | == outlier == | ||
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== data handling == | |||
=== remove first, last or certain characters from text === | |||
* Excel: using {{kbd | key=RIGHT}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342854.aspx RIGHT、RIGHTB 函數 - Excel - Office.com]</ref> + {{kbd | key=LEN}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342650.aspx LEN、LENB 函數 - Excel - Office.com]</ref> functions <ref>[http://www.extendoffice.com/documents/excel/560-excel-remove-character-from-string.html How to remove first, last or certain characters from text in Excel?]</ref> | * Excel: using {{kbd | key=RIGHT}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342854.aspx RIGHT、RIGHTB 函數 - Excel - Office.com]</ref> + {{kbd | key=LEN}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342650.aspx LEN、LENB 函數 - Excel - Office.com]</ref> functions <ref>[http://www.extendoffice.com/documents/excel/560-excel-remove-character-from-string.html How to remove first, last or certain characters from text in Excel?]</ref> | ||
* Excel: if the text length will be removed was fixed, you may try to use {{kbd | key=REPLACE}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342844.aspx REPLACE、REPLACEB 函數 - Excel - Office.com]</ref> + {{kbd | key=LEN}} functions ([http://bit.ly/1i2tsgk demo]) | * Excel: if the text length will be removed was fixed, you may try to use {{kbd | key=REPLACE}}<ref>[http://office.microsoft.com/zh-tw/excel-help/HP010342844.aspx REPLACE、REPLACEB 函數 - Excel - Office.com]</ref> + {{kbd | key=LEN}} functions ([http://bit.ly/1i2tsgk demo]) | ||