add explain command usage examples to readme.md

Signed-off-by: Kacper Trochimiak <[email protected]>
opensearch-project · Sep 26, 2024 · 1236265 · 1236265
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commit 1236265
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diff --git a/ppl-spark-integration/README.md b/ppl-spark-integration/README.md
@@ -227,6 +227,10 @@ See the next samples of PPL queries :
 **Describe**
  - `describe table`  This command is equal to the `DESCRIBE EXTENDED table` SQL command
 
+**Explain**
+ - `explain | source = table | where a = 1 | fields a,b,c`
+ - `explain | describe table`
+
 **Fields**
  - `source = table`
  - `source = table | fields a,b,c`