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-rw-r--r--src/include/nodes/parsenodes.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 9453e1dfdfa..de22dff8935 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -285,6 +285,11 @@ typedef struct CollateClause
* construct *must* be an aggregate call. Otherwise, it might be either an
* aggregate or some other kind of function. However, if OVER is present
* it had better be an aggregate or window function.
+ *
+ * Normally, you'd initialize this via makeFuncCall() and then only
+ * change the parts of the struct its defaults don't match afterwards
+ * if needed.
+ *
*/
typedef struct FuncCall
{