Omega359 commented on code in PR #13927:
URL: https://github.com/apache/datafusion/pull/13927#discussion_r1898942215
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datafusion/functions/src/unicode/substrindex.rs:
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@@ -26,12 +26,42 @@ use arrow::datatypes::{DataType, Int32Type, Int64Type};
use crate::utils::{make_scalar_function, utf8_to_str_type};
use datafusion_common::{exec_err, Result};
-use datafusion_expr::scalar_doc_sections::DOC_SECTION_STRING;
use datafusion_expr::TypeSignature::Exact;
use datafusion_expr::{
ColumnarValue, Documentation, ScalarUDFImpl, Signature, Volatility,
};
+use datafusion_macros::user_doc;
+#[user_doc(
+ doc_section(label = "String Functions"),
+ description = r#"Returns the substring from str before count occurrences
of the delimiter delim.
+If count is positive, everything to the left of the final delimiter (counting
from the left) is returned.
+If count is negative, everything to the right of the final delimiter (counting
from the right) is returned."#,
+ syntax_example = "substr(str, start_pos[, length])",
Review Comment:
This is incorrect - copy/paste error?
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