Prepare release 0.4.0 (#128)

Author: aykut-bozkurt

.vscode/settings.json

@@ -5,6 +5,9 @@
     "rust-analyzer.checkOnSave": true,
     "editor.inlayHints.enabled": "offUnlessPressed",
     "files.watcherExclude": {
-         "**/target/**": true
+        "**/target/**": true
+     },
+     "[sql]": {
+        "editor.formatOnSave": false
      }
 }

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "pg_parquet"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2021"
 license-file = "LICENSE"
 

Cargo.toml

@@ -0,0 +1 @@
+-- no changes

sql/pg_parquet--0.3.0--0.3.1.sql

@@ -0,0 +1 @@
+-- no changes

sql/pg_parquet--0.3.1--0.3.2.sql

@@ -0,0 +1,11 @@
+-- parquet stats function
+CREATE FUNCTION parquet."column_stats"("uri" TEXT) RETURNS TABLE (
+	"column_id" INT,
+	"field_id" INT,
+	"stats_min" TEXT,
+	"stats_max" TEXT,
+	"stats_null_count" BIGINT,
+	"stats_distinct_count" BIGINT
+) STRICT
+LANGUAGE c
+AS 'MODULE_PATHNAME', 'column_stats_wrapper';

sql/pg_parquet--0.3.2--0.4.0.sql

@@ -73,6 +73,7 @@ AS 'MODULE_PATHNAME', 'file_metadata_wrapper';
 
 CREATE SCHEMA IF NOT EXISTS parquet;
 
+-- parquet schema function
 CREATE  FUNCTION parquet."schema"(
 	"uri" TEXT
 ) RETURNS TABLE (
@@ -91,3 +92,15 @@ CREATE  FUNCTION parquet."schema"(
 STRICT
 LANGUAGE c
 AS 'MODULE_PATHNAME', 'schema_wrapper';
+
+-- parquet stats function
+CREATE FUNCTION parquet."column_stats"("uri" TEXT) RETURNS TABLE (
+	"column_id" INT,
+	"field_id" INT,
+	"stats_min" TEXT,
+	"stats_max" TEXT,
+	"stats_null_count" BIGINT,
+	"stats_distinct_count" BIGINT
+) STRICT
+LANGUAGE c
+AS 'MODULE_PATHNAME', 'column_stats_wrapper';