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Return error message if table does not exist #143

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Return error message if table does not exist #143

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16 changes: 16 additions & 0 deletions src/postgres_mcp/server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,22 @@ async def get_object_details(
""",
[schema_name, object_name],
)

# If no columns found, check if table/view actually exists
if not col_rows:
exists_rows = await SafeSqlDriver.execute_param_query(
sql_driver,
"""
SELECT tablename FROM pg_tables WHERE schemaname = {} AND tablename = {}
UNION
SELECT viewname FROM pg_views WHERE schemaname = {} AND viewname = {}
""",
[schema_name, object_name, schema_name, object_name],
)

if not exists_rows:
return format_error_response(f"{object_type.capitalize()} '{schema_name}.{object_name}' does not exist")

columns = (
[
{
Expand Down