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3 gru 2013 · TRIM function is different to REPLACE. REPLACE substitutes all occurrences of a string; TRIM removes only the spaces at the start and end of your string. If you want to remove only from the start you can use LTRIM instead.
and if you want remove all type of spaces, you can combine all of this functions : UPDATE `table` SET `col_name` = REPLACE(REPLACE(REPLACE(`col_name`, ' ', ''), '\t', ''), '\n', '');
Use the REPLACE function if you want to replace all occurrences of a substring in a given string. In our example, we replace unnecessary spaces with empty values. This function takes three arguments. The following illustrates the syntax of the function: REPLACE(string_expression, substring, new_substring)
The REPLACE () function replaces all occurrences of a substring within a string, with a new substring. Note: This function performs a case-sensitive replacement. Required. The original string. Required. The substring to be replaced. Required. The new replacement substring.
22 wrz 2023 · Explore this comprehensive guide on how to remove spaces from a string in MySQL. Learn various methods, including the TRIM, REPLACE and CONCAT functions with examples. Ideal for beginners and seasoned developers seeking to streamline their SQL workflows.
27 cze 2018 · MySQL 8 has the REGEXP_REPLACE function that should work. If you only need to leave alphanumeric characters, including accented characters, this would be simply. SELECT REGEXP_REPLACE(your_column, '[^[:alnum:]]+', ' ') ... to replace any non-alphanumerics with spaces. If you want to only eliminate characters on your list, you'd use something like
24 lut 2011 · UPDATE table SET table.field = REPLACE( table.field, ' ', '-' ); This will update all the fields, replacing all spaces with hyphens. This will actually modify the data in the tables. Fokko's answer above will change only the data that is pulled, therefore not changing the actual data.
