Split text by symbol: Difference between revisions
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→Approach 2: SUBSTRING_INDEX
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Split text by symbol (another string, also called delimiter or separator) | Split text by symbol (another string, also called delimiter or separator) | ||
== Example data == | |||
Task: Split the position e.g. 25.040215, 121.512532 by the comma ( , ) to obtain the latitude (1st string) and longitude (2nd string). | |||
Expected output: | |||
* 25.040215 | |||
* 121.512532 | |||
== Approaches == | == Approaches == | ||
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* PHP: [http://php.net/explode explode] or [http://php.net/manual/en/function.preg-split.php preg_split] function | * PHP: [http://php.net/explode explode] or [http://php.net/manual/en/function.preg-split.php preg_split] function | ||
=== MySQL | === Split text by symbol in MySQL === | ||
{{exclaim}} Only one symbol was allowed. The following query will get the last element if there are more than two symbols. | {{exclaim}} Only one symbol was allowed. The following query will get the last element if there are more than two symbols. | ||
# to get the first string ( 25.040215 ): {{code | code=SELECT TRIM(SUBSTRING_INDEX('25.040215, 121.512532' ,',', <span style="color:red">1</span>))}} | # to get the first string ( 25.040215 ): {{code | code=SELECT TRIM(SUBSTRING_INDEX('25.040215, 121.512532' ,',', <span style="color:red">1</span>))}} | ||
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</pre> | </pre> | ||
=== Excel | === Split text by symbol in Excel === | ||
==== 1: | Comparison of approaches | ||
<table border="1" class="wikitable sortable"> | |||
<tr> | |||
<th>Approach</th> | |||
<th>Output</th> | |||
</tr> | |||
<tr> | |||
<td>Approach 1: Parse data</td> | |||
<td>'''Multiple''' parts will be returned if the content contains two or more separator characters.</td> | |||
</tr> | |||
<tr> | |||
<td>Approach 2: SUBSTRING_INDEX</td> | |||
<td>Only '''two''' parts will be returned if the content contains two or more separator characters.</td> | |||
</tr> | |||
</table> | |||
==== Approach 1: Parse data ==== | |||
[https://support.microsoft.com/en-us/kb/214261 parse data] ([https://support.microsoft.com/zh-tw/kb/214261 資料剖析]) | [https://support.microsoft.com/en-us/kb/214261 parse data] ([https://support.microsoft.com/zh-tw/kb/214261 資料剖析]) | ||
* instruction with | * instruction with screenshots: [https://support.office.com/en-za/Article/split-text-into-different-cells-30b14928-5550-41f5-97ca-7a3e9c363ed7 Split text into different cells - Excel] | ||
==== 2: SUBSTRING_INDEX ==== | ==== Approach 2: SUBSTRING_INDEX ==== | ||
<table border="1" style=""> | <table border="1" style=""> | ||
<tr style="background-color: #555555; color: #ffffff;"> | <tr style="background-color: #555555; color: #ffffff;"> | ||
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</table> | </table> | ||
If the data set is perfect | If the data set is perfect | ||
# separator character: , | |||
# to get the first string ( 25.040215 ): B1 = {{code | code=<span style="background-color: #F6CEF5">MID( A1, 1, FIND(",", A1)-1)</span> }} | # to get the first string ( 25.040215 ): B1 = {{code | code=<span style="background-color: #F6CEF5">MID( A1, 1, FIND(",", A1)-1)</span> }} | ||
# to get the second string ( 121.512532 ): C1 = {{code | code=<span style="background-color: #ccc">MID( A1, FIND(",", A1)+1, LEN(A1))</span> }} | # to get the second string ( 121.512532 ): C1 = {{code | code=<span style="background-color: #ccc">MID( A1, FIND(",", A1)+1, LEN(A1))</span> }} | ||
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[https://docs.google.com/spreadsheets/d/11VeZIxGR7orL4smf_0G6oi7VxxNi3FFsCL9b6QrLhBE/edit?usp=sharingc online demo] (allow to edit) | [https://docs.google.com/spreadsheets/d/11VeZIxGR7orL4smf_0G6oi7VxxNi3FFsCL9b6QrLhBE/edit?usp=sharingc online demo] (allow to edit) | ||
< | |||
=== Split text by symbol in PHP === | |||
PHP script | |||
<pre> | |||
$input_string = "25.040215, 121.512532"; | |||
$list1 = explode(",", $input_string); | |||
$trimmed_list1 = array_map('trim', $list1); | |||
$list2 = preg_split("/[\s,]+/", $input_string); | |||
print_r($trimmed_list1); | |||
print_r($list2); | |||
</pre> | |||
output | |||
<pre> | |||
Array ( | |||
[0] => 25.040215 | |||
[1] => 121.512532 | |||
) | |||
</pre> | |||
[[Category:Data transformation]] | [[Category:Data transformation]] | ||