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[BUG] Fix binding of NULL value parameters in prepared statements (#496)

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Fix binding of NULL value parameters in prepared statements

Co-authored-by: anon <anon@non.existent>
This commit is contained in:
Voldemarich
2023-07-10 11:35:43 +03:00
committed by GitHub
parent 1ed6e925ed
commit 7205537b49
1 changed files with 15 additions and 4 deletions
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19
src/messages.rs
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@@ -832,10 +832,21 @@ impl TryFrom<&BytesMut> for Bind {
for _ in 0..num_param_values { for _ in 0..num_param_values {
let param_len = cursor.get_i32(); let param_len = cursor.get_i32();
let mut param = BytesMut::with_capacity(param_len as usize); // There is special occasion when the parameter is NULL
param.resize(param_len as usize, b'0'); // In that case, param length is defined as -1
cursor.copy_to_slice(&mut param); // So if the passed parameter len is over 0
param_values.push((param_len, param)); if param_len > 0 {
let mut param = BytesMut::with_capacity(param_len as usize);
param.resize(param_len as usize, b'0');
cursor.copy_to_slice(&mut param);
// we push and the length and the parameter into vector
param_values.push((param_len, param));
} else {
// otherwise we push a tuple with -1 and 0-len BytesMut
// which means that after encountering -1 postgres proceeds
// to processing another parameter
param_values.push((param_len, BytesMut::new()));
}
} }
let num_result_column_format_codes = cursor.get_i16(); let num_result_column_format_codes = cursor.get_i16();