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This article mainly introduces "how to use the instr () function in mysql". In daily operation, I believe many people have doubts about how to use the instr () function in mysql. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use the instr () function in mysql". Next, please follow the editor to study!

Description

1. It is used to return the index position where the substring substr appears for the first time in the string str, and 0 is returned if the substring is not found.

2. The instr () function is not case sensitive. In other words, the result is always the same through lowercase, uppercase, title case, and so on.

If you want the instr function to search non-binary strings in a case-sensitive manner, you can use the instr operator to convert the parameters of the instr function from a non-binary string to a binary string.

Example

Select INSTR ('MySQL string function', 'string') AS index1, INSTR ('MySQL string function', 'date') AS index2, INSTR ('MySQL string function',') AS index3, INSTR ('MySQL string function', null) AS index4 Index1 | index2 | index3 | index4 |-+ 6 | 0 | 1 | | at this point, the study on "how to use the instr () function in mysql" is over. I hope you can solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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