jackye1995 commented on PR #21086:
URL: https://github.com/apache/datafusion/pull/21086#issuecomment-4112618227
Okay I see you are right, when it's not set it's default to `\`:
```
Expr::Like(Like {
negated,
expr,
pattern,
escape_char,
case_insensitive,
}) => {
// `\` is the implicit escape, see
https://github.com/apache/datafusion/issues/13291
if escape_char.unwrap_or('\\') != '\\' {
return exec_err!(
"LIKE does not support escape_char other than the backslash
(\\)"
);
}
```
Then we are good!
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