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-rw-r--r--src/func.c31
1 files changed, 6 insertions, 25 deletions
diff --git a/src/func.c b/src/func.c
index e56561e4e..9d81d0c74 100644
--- a/src/func.c
+++ b/src/func.c
@@ -367,33 +367,14 @@ static void lowerFunc(sqlite3_context *context, int argc, sqlite3_value **argv){
}
}
-
-#if 0 /* This function is never used. */
-/*
-** The COALESCE() and IFNULL() functions used to be implemented as shown
-** here. But now they are implemented as VDBE code so that unused arguments
-** do not have to be computed. This legacy implementation is retained as
-** comment.
-*/
/*
-** Implementation of the IFNULL(), NVL(), and COALESCE() functions.
-** All three do the same thing. They return the first non-NULL
-** argument.
+** The COALESCE() and IFNULL() functions are implemented as VDBE code so
+** that unused argument values do not have to be computed. However, we
+** still need some kind of function implementation for this routines in
+** the function table. That function implementation will never be called
+** so it doesn't matter what the implementation is. We might as well use
+** the "version()" function as a substitute.
*/
-static void ifnullFunc(
- sqlite3_context *context,
- int argc,
- sqlite3_value **argv
-){
- int i;
- for(i=0; i<argc; i++){
- if( SQLITE_NULL!=sqlite3_value_type(argv[i]) ){
- sqlite3_result_value(context, argv[i]);
- break;
- }
- }
-}
-#endif /* NOT USED */
#define ifnullFunc versionFunc /* Substitute function - never called */
/*