diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/func.c | 31 |
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 */ /* |