feat(tool): add execute_sql_code (#91)

tools/execute_sql_code.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -e
+
+# @describe Execute the sql code.
+# @option --code! The code to execute.
+
+# @env USQL_DSN! The database url, e.g. pgsql://user:pass@host/dbname
+# @meta require-tools usql
+
+main() {
+    if ! grep -qi '^select' <<<"$argc_code"; then
+        if [ -t 1 ]; then
+            read -r -p "Are you sure you want to continue? [Y/n] " ans
+            if [[ "$ans" == "N" || "$ans" == "n" ]]; then
+                echo "Aborted!"
+                exit 1
+            fi
+        fi
+    fi
+    usql -c "$argc_code" "$USQL_DSN" >> "$LLM_OUTPUT"
+}
+
+eval "$(argc --argc-eval "$0" "$@")"