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use super::*;
pub(super) fn bind_write_plan(
db: &Db,
search_path: &[SchemaId],
current_database: Option<&str>,
time_ctx: BindTimeContext,
cte_scope: &CteScope,
p: Plan,
) -> PgWireResult<Plan> {
match p {
Plan::CallBuiltin { name, args, schema } => Ok(Plan::CallBuiltin { name, args, schema }),
Plan::InsertValues {
mut table,
columns,
rows,
override_system_value,
on_conflict,
mut returning,
returning_schema: _,
} => {
let tm = resolve_table_meta(db, search_path, &table).map_err(map_catalog_err)?;
if table.schema.is_none() {
table.schema = Some(tm.schema.clone());
}
let schema_origin = Some(FieldOrigin {
schema: Some(tm.schema.as_str().to_string()),
table: Some(tm.name.clone()),
alias: None,
});
let table_schema = Schema {
fields: tm
.columns
.iter()
.map(|c| Field {
name: c.name.clone(),
data_type: c.data_type.clone(),
origin: schema_origin.clone(),
})
.collect(),
};
let bound_on_conflict = match on_conflict {
Some(OnConflictAction::DoUpdate {
target,
sets,
where_clause,
}) => {
let bound_sets = bind_update_sets(
sets,
&table_schema,
tm,
db,
search_path,
current_database,
time_ctx,
true,
)?;
let bound_where = where_clause
.map(|c| {
bind_bool_expr_allow_excluded(
&c,
&table_schema,
db,
search_path,
current_database,
time_ctx,
cte_scope,
)
})
.transpose()?;
Some(OnConflictAction::DoUpdate {
target,
sets: bound_sets,
where_clause: bound_where,
})
}
Some(OnConflictAction::DoNothing { target }) => {
Some(OnConflictAction::DoNothing { target })
}
None => None,
};
let column_positions = if let Some(cols) = &columns {
let mut seen = HashSet::new();
let mut positions = Vec::with_capacity(cols.len());
for col in cols {
let idx = tm
.columns
.iter()
.position(|c| c.name == *col)
.ok_or_else(|| fe_code("42703", format!("unknown column: {col}")))?;
if !seen.insert(idx) {
return Err(fe_code("42701", format!("column {col} specified twice")));
}
positions.push(idx);
}
positions
} else {
(0..table_schema.len()).collect()
};
let expected_len = column_positions.len();
let mut bound_rows = Vec::with_capacity(rows.len());
for row in rows {
if row.len() != expected_len && (columns.is_some() || row.len() > expected_len) {
let msg = if columns.is_some() {
format!(
"INSERT has {} target columns but {} expressions",
expected_len,
row.len()
)
} else {
format!(
"INSERT expects {} expressions, got {}",
expected_len,
row.len()
)
};
return Err(fe_code("21P01", msg));
}
let mut bound_row = Vec::with_capacity(row.len());
for (expr_idx, src) in row.into_iter().enumerate() {
let target_idx = column_positions[expr_idx];
match src {
InsertSource::Default => bound_row.push(InsertSource::Default),
InsertSource::Expr(expr) => {
let field = table_schema.field(target_idx);
let hint = match field.data_type {
DataType::Int2
| DataType::Int4
| DataType::Int8
| DataType::Float8
| DataType::Varchar(_)
| DataType::PgChar
| DataType::Name
| DataType::BpChar(_)
| DataType::Point
| DataType::Lseg
| DataType::Line
| DataType::Circle
| DataType::Box
| DataType::Tid
| DataType::Path
| DataType::Bool
| DataType::Date
| DataType::Timestamp
| DataType::Timestamptz
| DataType::Bytea => Some(&field.data_type),
_ => None,
};
let bound = bind_scalar_expr(
&expr,
&table_schema,
hint,
db,
search_path,
current_database,
time_ctx,
)?;
bound_row.push(InsertSource::Expr(bound));
}
}
}
bound_rows.push(bound_row);
}
let returning_schema = match returning.as_mut() {
Some(clause) => Some(bind_returning_clause(
clause,
&table_schema,
db,
search_path,
current_database,
time_ctx,
)?),
None => None,
};
Ok(Plan::InsertValues {
table,
columns,
rows: bound_rows,
override_system_value,
on_conflict: bound_on_conflict,
returning,
returning_schema,
})
}
Plan::InsertSelect {
mut table,
columns,
select,
override_system_value,
on_conflict,
mut returning,
returning_schema: _,
} => {
let tm = resolve_table_meta(db, search_path, &table).map_err(map_catalog_err)?;
if table.schema.is_none() {
table.schema = Some(tm.schema.clone());
}
let schema_origin = Some(FieldOrigin {
schema: Some(tm.schema.as_str().to_string()),
table: Some(tm.name.clone()),
alias: None,
});
let table_schema = Schema {
fields: tm
.columns
.iter()
.map(|c| Field {
name: c.name.clone(),
data_type: c.data_type.clone(),
origin: schema_origin.clone(),
})
.collect(),
};
let bound_on_conflict = match on_conflict {
Some(OnConflictAction::DoUpdate {
target,
sets,
where_clause,
}) => {
let bound_sets = bind_update_sets(
sets,
&table_schema,
tm,
db,
search_path,
current_database,
time_ctx,
true,
)?;
let bound_where = where_clause
.map(|c| {
bind_bool_expr_allow_excluded(
&c,
&table_schema,
db,
search_path,
current_database,
time_ctx,
cte_scope,
)
})
.transpose()?;
Some(OnConflictAction::DoUpdate {
target,
sets: bound_sets,
where_clause: bound_where,
})
}
Some(OnConflictAction::DoNothing { target }) => {
Some(OnConflictAction::DoNothing { target })
}
None => None,
};
let bound_select = bind_with_search_path(
db,
search_path,
current_database,
time_ctx,
cte_scope,
*select,
)?;
let expected_len = columns.as_ref().map_or(table_schema.len(), Vec::len);
let actual_len = bound_select.schema().len();
if actual_len != expected_len {
let msg = if columns.is_some() {
format!(
"INSERT has {} target columns but {} expressions",
expected_len, actual_len
)
} else {
format!(
"INSERT expects {} expressions, got {}",
expected_len, actual_len
)
};
return Err(fe_code("21P01", msg));
}
let returning_schema = match returning.as_mut() {
Some(clause) => Some(bind_returning_clause(
clause,
&table_schema,
db,
search_path,
current_database,
time_ctx,
)?),
None => None,
};
Ok(Plan::InsertSelect {
table,
columns,
select: Box::new(bound_select),
override_system_value,
on_conflict: bound_on_conflict,
returning,
returning_schema,
})
}
Plan::CreateTable {
table,
cols,
parents,
pk,
foreign_keys,
uniques,
} => {
let (cols, parents) = bind_inherited_columns(db, search_path, cols, parents)?;
Ok(Plan::CreateTable {
table,
cols,
parents,
pk,
foreign_keys,
uniques,
})
}
Plan::CreateTableAs {
table,
column_names,
query,
with_data,
if_not_exists,
} => {
let query = bind_with_search_path(
db,
search_path,
current_database,
time_ctx,
cte_scope,
*query,
)?;
if column_names.len() > query.schema().fields.len() {
return Err(fe_code("42601", "too many column names were specified"));
}
let mut seen = HashSet::with_capacity(query.schema().fields.len());
for (index, field) in query.schema().fields.iter().enumerate() {
let name = column_names.get(index).unwrap_or(&field.name);
if !seen.insert(name) {
return Err(fe_code(
"42701",
format!("column \"{name}\" specified more than once"),
));
}
}
Ok(Plan::CreateTableAs {
table,
column_names,
query: Box::new(query),
with_data,
if_not_exists,
})
}
Plan::CopyFrom {
mut table,
columns,
filename,
encoding,
} => {
let tm = resolve_table_meta(db, search_path, &table).map_err(map_catalog_err)?;
if table.schema.is_none() {
table.schema = Some(tm.schema.clone());
}
if let Some(columns) = &columns {
let mut seen = HashSet::with_capacity(columns.len());
for column in columns {
if !tm.columns.iter().any(|candidate| candidate.name == *column) {
return Err(fe_code("42703", format!("unknown column: {column}")));
}
if !seen.insert(column) {
return Err(fe_code("42701", format!("column {column} specified twice")));
}
}
}
Ok(Plan::CopyFrom {
table,
columns,
filename,
encoding,
})
}
Plan::CreateDatabase { .. } => Ok(p),
Plan::DropDatabase { name } => Ok(Plan::UnsupportedDbDDL {
kind: DbDdlKind::Drop,
name,
}),
Plan::AlterDatabase { name } => Ok(Plan::UnsupportedDbDDL {
kind: DbDdlKind::Alter,
name,
}),
Plan::UnsupportedDbDDL { .. } => Ok(p),
other => Ok(other),
}
}