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> I need to write a function which has to replace a character with two or three other characters ....
>
You can use the replace function as specified below:
replace(string text, from text, to text) textReplace all occurrences in @string of substring @from with substring @to.
replace( 'abcdefabcdef', 'cd', 'XX') ==> abXXefabXXef
Yasir
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