Update dataset card metadata

README.md

@@ -1,6 +1,20 @@
+---
+license: apache-2.0
+language:
+- en
+task_categories:
+- text-generation
+tags:
+- sql
+- postgresql
+- sql-optimization
+- benchmark
+pretty_name: Effi-SQL
+---
+
 # Effi-SQL
 
-## 📣 Update 2026-06-12
+## Update 2026-06-12
 
 We release **Effi-SQL**, a dataset suite for SQL efficiency optimization.
 
@@ -9,7 +23,7 @@ This collection includes:
 - **Effi-SQL Benchmark**: a benchmark for evaluating SQL efficiency optimization methods.
 - **Diff-SQL Training Dataset**: training data used by Diff-SQL, including data for the Patch Generator and Constraint Aligner.
 
-## 📋 Dataset Fields
+## Dataset Fields
 
 ### Effi-SQL Benchmark
 
@@ -32,6 +46,6 @@ This collection includes:
 - **base_sql**: The original slow SQL query.
 - **optimized_sql**: The optimized SQL query used as the reference target.
 
-## 🔗 Related Resources
+## Related Resources
 
 - **Code**: [L-nshpp/Diff-SQL](https://github.com/L-nshpp/Diff-SQL)