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In this MySQL REPLACE function, three parameters are included where one denotes the main string where the replacement is to be made and the other two strings are used as the parameters to support for replacing a string within the first one with another one. This task in MySQL makes a case-sensitive function implementation while string replacement process. Hence, MySQL allows us to replace an old string with the new one in a column of the database table so that we can perform any handy search in the table and replace the needed one with the existing one record value.
As per the above query, we see that the valid expression is specified to perform replacement from old string to new in the main string. The function executes to replace all the occurrences of the second argument in a specified string using the desired new one. Thus, using the REPLACE function in MySQL we can work to handle any spelling mistakes found in the columns or if we want to search the words that may not be correct or false and then, want to replace some characters with the effective one so that we get the updated records.
This above helps to find all the occurrences of a spelling error in the column of the address of the table person and updates it with the correct one. For the function, the first parameter defines the specified column name without quotes and the other two denote the substrings which are responsible to replace each other with one another to produce a new string.
This will cause a sudden data loss of that column in the table.
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