comphead commented on code in PR #13925:
URL: https://github.com/apache/datafusion/pull/13925#discussion_r1901186795
##########
datafusion/functions/src/string/concat_ws.rs:
##########
@@ -27,11 +27,34 @@ use crate::strings::{ColumnarValueRef, StringArrayBuilder};
use datafusion_common::cast::{as_string_array, as_string_view_array};
use datafusion_common::{exec_err, internal_err, plan_err, Result, ScalarValue};
use datafusion_expr::expr::ScalarFunction;
-use datafusion_expr::scalar_doc_sections::DOC_SECTION_STRING;
use datafusion_expr::simplify::{ExprSimplifyResult, SimplifyInfo};
use datafusion_expr::{lit, ColumnarValue, Documentation, Expr, Volatility};
use datafusion_expr::{ScalarUDFImpl, Signature};
+use datafusion_macros::user_doc;
+#[user_doc(
+ doc_section(label = "String Functions"),
+ description = "Concatenates multiple strings together with a specified
separator.",
+ syntax_example = "concat_ws(separator, str[, ..., str_n])",
+ sql_example = r#"```sql
+> select concat_ws('_', 'data', 'fusion');
++--------------------------------------------------+
+| concat_ws(Utf8("_"),Utf8("data"),Utf8("fusion")) |
++--------------------------------------------------+
+| data_fusion |
++--------------------------------------------------+
+```"#,
+ standard_argument(name = "str", prefix = "String"),
+ argument(
+ name = "separator",
+ description = "Separator to insert between concatenated strings."
+ ),
+ argument(
+ name = "str_n",
+ description = "Subsequent string expressions to concatenate."
+ ),
Review Comment:
```suggestion
argument(
name = "separator",
description = "Separator to insert between concatenated strings."
),
argument(
name = "str",
description = "String expression to operate on. Can be a constant,
column, or function, and any combination of operators."),
argument(
name = "str_n",
description = "Subsequent string expressions to concatenate."
),
```
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