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Aug 17, 2016 · The REPLACE function is very handy to search and replace text in a table such as updating obsolete URL, correcting a spelling mistake, etc. UPDATE tbl_name SET field_name = REPLACE(field_name, string_to_find, string_to_replace) WHERE conditions;
Jun 2, 2015 · Alas, you only replace the exact pattern: 'house_id_52' Here the underscore is treated as a 'literal'. Hence the output is 'inconsistent'. I have run the code. – Ryan Vincent. CommentedJun 2, 2015 at 16:47. A possible answer in your case is to use the: expr LIKE pattern [ESCAPE 'escape_char'] so that you can treat the underscore and dash as ...
Jun 12, 2009 · 12.5.2 Regular Expressions: REGEXP_REPLACE(expr, pat, repl[, pos[, occurrence[, match_type]]]) Replaces occurrences in the string expr that match the regular expression specified by the pattern pat with the replacement string repl, and returns the resulting string. If expr, pat, or repl is NULL, the return value is NULL.
Oct 1, 2016 · Using REPLACE() in MySQL SELECT. Ask Question Asked 11 years, 10 months ago. Modified 8 years, 1 month ago.
Case-insensitive REPLACE in MySQL? 2. MYSQL query to update for date field. 0.
Jan 1, 2001 · This is false. The row doesn't just get updated, it is completely removed. The problem is, if there's a PRIMARY KEY on that table, and the REPLACE INTO does not specify a value for the PRIMARY KEY (for example, it's an AUTO_INCREMENT column), the new row gets a different value, and this may not be what you were looking for in terms of behavior.
Aug 7, 2012 · The easiest way I have found is to dump the database to a text file, run a sed command to do the replace, and reload the database back into MySQL. All commands below are bash on Linux. Dump database to text file. mysqldump -u user -p databasename > ./db.sql. Run sed command to find/replace target string.
Aug 20, 2010 · SELECT IFNULL(column_name, 0) FROM table_name; IFNULL will return column's value (if it has something other than NULL) otherwise second parameter passed (in this case 0). answered Jun 15, 2014 at 5:55. Arif. 1,716 3 21 34. This only really selects and replaces, rather than truly updating the table. – tedioustortoise.
May 4, 2017 · 30. I have this. UPDATE table. SET example = REPLACE(example, '1', 'test') WHERE example REGEXP '1$'. So this code replaces all instances of "1" in the "example" field with "test". I want to repeat this for 2, 3, 4 and so on. But it would be very inefficient to use separate querys.
You can also nest multiple REPLACE calls. UPDATE MyTable. SET StringColumn = REPLACE (REPLACE (StringColumn, 'GREATERTHAN', '>'), 'LESSTHAN', '<') You can also do this when you select the data (as opposed to when you save it). So instead of : SELECT MyURLString From MyTable. You could do.
