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fix(chat): decode pg_class.reltuples as f32 in sample_data probe
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pg_class.reltuples is `real` (FLOAT4). Reading it as f64 via query_scalar made
the sample_data tool fail with a sqlx type-mismatch ("f64 (FLOAT8) is not
compatible with FLOAT4") before any rows were fetched. Decode as f32 and widen.
This commit is contained in:
Alexey Shakhmatov
2026-05-23 18:17:55 +03:00
parent ff212e4d0b
commit c03e887b71
1 changed files with 4 additions and 2 deletions
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6
src-tauri/src/commands/chat_tools.rs
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@@ -899,7 +899,9 @@ async fn build_sample_sql_postgres(
limit: u32, limit: u32,
) -> TuskResult<String> { ) -> TuskResult<String> {
let pool = state.get_pool(connection_id).await?; let pool = state.get_pool(connection_id).await?;
let reltuples: f64 = sqlx::query_scalar( // pg_class.reltuples is `real` (FLOAT4); decode as f32 then widen — sqlx is
// strict and reading it directly as f64 fails with a type-mismatch error.
let reltuples: f64 = sqlx::query_scalar::<_, f32>(
"SELECT c.reltuples FROM pg_class c JOIN pg_namespace n ON c.relnamespace = n.oid \ "SELECT c.reltuples FROM pg_class c JOIN pg_namespace n ON c.relnamespace = n.oid \
WHERE n.nspname = $1 AND c.relname = $2", WHERE n.nspname = $1 AND c.relname = $2",
) )
@@ -908,7 +910,7 @@ async fn build_sample_sql_postgres(
.fetch_optional(&pool) .fetch_optional(&pool)
.await .await
.map_err(TuskError::Database)? .map_err(TuskError::Database)?
.unwrap_or(0.0); .unwrap_or(0.0) as f64;
let qualified = format!("{}.{}", escape_ident(schema), escape_ident(table)); let qualified = format!("{}.{}", escape_ident(schema), escape_ident(table));
if reltuples > 0.0 { if reltuples > 0.0 {