add more jq example & remove duplicated one

pages/common/jq.md

@@ -2,6 +2,7 @@
 
 > A JSON processor that uses a domain-specific language (DSL).
 > More information: <https://jqlang.github.io/jq/manual/>.
+> See also: `trdsql`
 
 - Execute a specific expression (print a colored and formatted JSON output):
 
@@ -15,9 +16,9 @@
 
 `{{cat path/to/file.json}} | jq {{--arg "name1" "value1" --arg "name2" "value2" ...}} '{{. + $ARGS.named}}'`
 
-- Print selected specific keys as JSON object:
+- Create new JSON object via an old JSON object:
 
-`{{cat path/to/file.json}} | jq '{{{key1,key2, ...}}}'`
+`{{cat path/to/file.json}} | jq '{{{newKey1: .key1, newKey2: .key2.nestedKey, ...}}}'`
 
 - Print specific array items:
 
@@ -27,7 +28,7 @@
 
 `{{cat path/to/file.json}} | jq '.[]'`
 
-- Print conditional objects in array:
+- Print multi-conditional objects in array:
 
 `{{cat path/to/file.json}} | jq '.[] | select((.key1=="value1") and .key2=="value2")'`