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Question-- how does mysql split a string that is split by

Split the fields of commas and semicolons. Other fields are automatically completed.

Https://blog.csdn.net/u012009613/article/details/52770567 SELECT s.* from (SELECT t.IDMagnet.timekeeper, substring_index (substring_index (t.all_content,';', b.help_topic_id + 1),';',-1) content_split-- t..FROM excel_lvli t JOIN mysql.help_topic b ON b.help_topic_id

0; SELECT substring_index (substring_index (t.context,',', b.help_topic_id + 1),',',-1) FROM test.test t JOIN mysql.help_topic b ON b.help_topic_id < (LENGTH (t.context)-LENGTH (REPLACE (t.context,',')) + 1)

The effect achieved. :

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