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REPLACE works exactly like INSERT, except that if an old row in the table has the same value as a new row for a PRIMARY KEY or a UNIQUE index, the old row is deleted before the new row is inserted. See Section 15.2.7, “INSERT Statement”. REPLACE is a MySQL extension to the SQL standard.
- 14.8 String Functions and Operators
Returns the string str with all occurrences of the string...
- 11.1.1 String Literals
As an alternative to explicitly escaping special characters,...
- 14.8.2 Regular Expressions
Replaces occurrences in the string expr that match the...
- 14.8 String Functions and Operators
Returns the string str with all occurrences of the string from_str replaced by the string to_str. REPLACE() performs a case-sensitive match when searching for from_str. mysql> SELECT REPLACE('www.mysql.com', 'w', 'Ww'); -> 'WwWwWw.mysql.com' This function is multibyte safe.
As an alternative to explicitly escaping special characters, many MySQL APIs provide a placeholder capability that enables you to insert special markers into a statement string, and then bind data values to them when you issue the statement.
20 maj 2009 · Solution: StringReplace(TheString, #39,'\'+#39, [rfReplaceAll, rfIgnoreCase]); Result: TheString=" bla bla bla \'em some more apo:S \'em and so on "; This function will replace all Char (39) with "\'" allowing you to insert or update text fields in MySQL without any problem.
24 gru 2010 · PostgreSQL 8.4 introduced the ANSI-SQL array_agg function which IBM DB2 also has. Not sure about other databases. This provided another option for doing a string aggregation. Without the ORDER BY feature for aggregates introduced in PostgreSQL 9.0, this option is less powerful.
Automatic updates to histograms have been added to histograms created with AUTO UPDATE option. Updates automatically happen when ANALYZE TABLE statements is used. New privileges added for FLUSH PRIVILEGES statement and for OPTIMIZE LOCAL TABLE (NO_WRITE_TO_BINLOG).
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 .
