docs(backends): add support more supported IO types

docs/backends/clickhouse.md

@@ -3,6 +3,7 @@ backend_name: ClickHouse
 backend_url: https://clickhouse.yandex/
 backend_module: clickhouse
 exports: ["PyArrow", "Parquet", "CSV", "Pandas"]
+imports: ["CSV", "Parquet"]
 memtable_impl: native
 ---
 
@@ -83,3 +84,16 @@ or
 ```python
 con = ibis.connect("clickhouse://play:[email protected]:443?secure=True")
 ```
+
+## File Support
+
+<!-- prettier-ignore-start -->
+::: ibis.backends.clickhouse.Backend.read_csv
+    options:
+      heading_level: 4
+      show_docstring_returns: false
+::: ibis.backends.clickhouse.Backend.read_parquet
+    options:
+      heading_level: 4
+      show_docstring_returns: false
+<!-- prettier-ignore-end -->

docs/backends/polars.md

@@ -5,7 +5,7 @@ backend_module: polars
 is_experimental: true
 version_added: "4.0"
 exports: ["PyArrow", "Parquet", "Delta Lake", "CSV", "Pandas"]
-imports: ["CSV", "Parquet", "Delta Lake", "Pandas"]
+imports: ["CSV", "Parquet", "Delta Lake", "Pandas", "JSON"]
 memtable_impl: native
 ---
 
@@ -73,4 +73,8 @@ con = ibis.polars.connect()
     options:
       heading_level: 4
       show_docstring_returns: false
+::: ibis.backends.polars.Backend.read_json
+    options:
+      heading_level: 4
+      show_docstring_returns: false
 <!-- prettier-ignore-end -->

docs/backends/pyspark.md

@@ -4,7 +4,7 @@ backend_url: https://spark.apache.org/docs/latest/api/python/
 backend_module: pyspark
 backend_param_style: PySpark things
 exports: ["PyArrow", "Parquet", "Delta Lake", "Pandas"]
-imports: ["CSV", "Parquet", "Delta Lake"]
+imports: ["CSV", "Parquet", "Delta Lake", "JSON"]
 memtable_impl: native
 ---
 
@@ -68,4 +68,8 @@ con = ibis.pyspark.connect(session=session)
     options:
       heading_level: 4
       show_docstring_returns: false
+::: ibis.backends.pyspark.Backend.read_json
+    options:
+      heading_level: 4
+      show_docstring_returns: false
 <!-- prettier-ignore-end -->

docs/backends/snowflake.md

@@ -1,7 +1,7 @@
 ---
 backend_name: Snowflake
 backend_url: https://snowflake.com/
-imports: ["CSV"]
+imports: ["CSV", "Parquet", "JSON"]
 exports: ["PyArrow", "Parquet", "CSV", "Pandas"]
 memtable_impl: native
 ---
@@ -123,3 +123,20 @@ available databases and schema in the "Data" sidebar item in the Snowflake web
 app.
 
 ![Snowflake Database](./images/snowflake_database.png)
+
+## File Support
+
+<!-- prettier-ignore-start -->
+::: ibis.backends.snowflake.Backend.read_csv
+    options:
+      heading_level: 4
+      show_docstring_returns: false
+::: ibis.backends.snowflake.Backend.read_parquet
+    options:
+      heading_level: 4
+      show_docstring_returns: false
+::: ibis.backends.snowflake.Backend.read_json
+    options:
+      heading_level: 4
+      show_docstring_returns: false
+<!-- prettier-ignore-end -->