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Minor: simplify update code #7943

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merged 1 commit into from
Oct 28, 2023
Merged

Minor: simplify update code #7943

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22 changes: 7 additions & 15 deletions datafusion/sql/src/statement.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,6 @@ use datafusion_common::{
Result, SchemaReference, TableReference, ToDFSchema,
};
use datafusion_expr::dml::{CopyOptions, CopyTo};
use datafusion_expr::expr::Placeholder;
use datafusion_expr::expr_rewriter::normalize_col_with_schemas_and_ambiguity_check;
use datafusion_expr::logical_plan::builder::project;
use datafusion_expr::logical_plan::DdlStatement;
Expand Down Expand Up @@ -1025,20 +1024,13 @@ impl<'a, S: ContextProvider> SqlToRel<'a, S> {
// Projection
let mut exprs = vec![];
for (col_name, expr, dt) in values_and_types.into_iter() {
let expr = self.sql_to_expr(expr, &table_schema, &mut planner_context)?;
let expr = match expr {
datafusion_expr::Expr::Placeholder(Placeholder {
ref id,
ref data_type,
}) => match data_type {
None => datafusion_expr::Expr::Placeholder(Placeholder::new(
id.clone(),
Some(dt.clone()),
)),
Some(_) => expr,
},
_ => expr,
};
let mut expr = self.sql_to_expr(expr, &table_schema, &mut planner_context)?;
// Update placeholder's datatype to the type of the target column
if let datafusion_expr::Expr::Placeholder(placeholder) = &mut expr {
placeholder.data_type =
placeholder.data_type.take().or_else(|| Some(dt.clone()));
}
// Cast to target column type, if necessary
let expr = expr.cast_to(dt, source.schema())?.alias(col_name);
exprs.push(expr);
}
Expand Down