remove float[] array support, only use vector

src/bin/fit_model.rs

@@ -1,5 +1,4 @@
 use anyhow::{Context, Result};
-use bytes::BytesMut;
 use clap::Parser;
 use deadpool_postgres::{Config, Pool, Runtime};
 use dotenv::dotenv;
@@ -57,8 +56,6 @@ async fn get_column_types(
         let pg_type = match (data_type, udt_name) {
             ("integer", _) => Type::INT4,
             ("bigint", _) => Type::INT8,
-            ("ARRAY", "_float4") => Type::FLOAT4_ARRAY,
-            ("ARRAY", "_float8") => Type::FLOAT8_ARRAY,
             ("USER-DEFINED", type_name) => pg_types::get_pg_type(client, type_name).await?,
             _ => anyhow::bail!("Unsupported column type: {} ({})", data_type, udt_name),
         };
@@ -152,11 +149,14 @@ async fn save_embeddings(
         &[&args.target_id_column, &args.target_embedding_column],
     )
     .await?;
-    info!("Target table column types: {:?}", types);
+
+    if types.len() != 2 {
+        anyhow::bail!("Failed to get both column types from target table");
+    }
 
     // Create a temporary table with the same structure
     info!("Creating temporary table...");
-    let id_type = match types[0] {
+    let id_type_str = match types[0] {
         Type::INT4 => "INTEGER",
         Type::INT8 => "BIGINT",
         _ => anyhow::bail!("Unexpected type for ID column: {:?}", types[0]),
@@ -166,7 +166,7 @@ async fn save_embeddings(
             {} {},
             {} vector({})
         )",
-        args.target_id_column, id_type, args.target_embedding_column, args.factors
+        args.target_id_column, id_type_str, args.target_embedding_column, args.factors
     );
     info!("Temp table creation SQL: {}", create_temp);
     client.execute(&create_temp, &[]).await?;
@@ -327,6 +327,13 @@ async fn validate_schema(client: &deadpool_postgres::Client, args: &Args) -> Res
         let udt_name: &str = row.get("udt_name");
         if udt_name == "vector" {
             let vector_dim: i32 = row.get("vector_dim");
+            if vector_dim <= 0 {
+                anyhow::bail!(
+                    "Invalid vector dimension {} for column '{}'",
+                    vector_dim,
+                    args.target_embedding_column,
+                );
+            }
             if vector_dim != args.factors as i32 {
                 anyhow::bail!(
                     "Vector dimension mismatch: column '{}' has dimension {}, but factors is {}",