| --- |
| { |
| "title": "SUB_REPLACE", |
| "language": "en" |
| } |
| --- |
| |
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| |
| ## sub_replace |
| ### Description |
| #### Syntax |
| |
| `VARCHAR sub_replace(VARCHAR str, VARCHAR new_str, INT start[, INT len])` |
| |
| Return with new_str replaces the str with length and starting position from start. |
| When start and len are negative integers, return NULL. |
| and the default value of len is the length of new_str. |
| |
| ### example |
| |
| ``` |
| mysql> select sub_replace("this is origin str","NEW-STR",1); |
| +-------------------------------------------------+ |
| | sub_replace('this is origin str', 'NEW-STR', 1) | |
| +-------------------------------------------------+ |
| | tNEW-STRorigin str | |
| +-------------------------------------------------+ |
| |
| mysql> select sub_replace("doris","***",1,2); |
| +-----------------------------------+ |
| | sub_replace('doris', '***', 1, 2) | |
| +-----------------------------------+ |
| | d***is | |
| +-----------------------------------+ |
| ``` |
| ### keywords |
| SUB_REPLACE |
