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Add the ability to factor constant functions out of inner loops. But do

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not factor out non-constant functions, like random().

FossilOrigin-Name: 1b0f779e19a5c0d51eddd2d88db50034d77d132c
This commit is contained in:
drh
2013-11-21 14:33:48 +00:00
parent e09f43f8b7
commit b1fba2868b
6 changed files with 36 additions and 23 deletions
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src/func.c
+5 -5
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@@ -1664,8 +1664,8 @@ void sqlite3RegisterGlobalFunctions(void){
FUNCTION2(ifnull, 2, 0, 0, noopFunc, SQLITE_FUNC_COALESCE),
FUNCTION2(unlikely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY),
FUNCTION2(likelihood, 2, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY),
FUNCTION(random, 0, 0, 0, randomFunc ),
FUNCTION(randomblob, 1, 0, 0, randomBlob ),
VFUNCTION(random, 0, 0, 0, randomFunc ),
VFUNCTION(randomblob, 1, 0, 0, randomBlob ),
FUNCTION(nullif, 2, 0, 1, nullifFunc ),
FUNCTION(sqlite_version, 0, 0, 0, versionFunc ),
FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ),
@@ -1675,9 +1675,9 @@ void sqlite3RegisterGlobalFunctions(void){
FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ),
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
FUNCTION(quote, 1, 0, 0, quoteFunc ),
FUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid),
FUNCTION(changes, 0, 0, 0, changes ),
FUNCTION(total_changes, 0, 0, 0, total_changes ),
VFUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid),
VFUNCTION(changes, 0, 0, 0, changes ),
VFUNCTION(total_changes, 0, 0, 0, total_changes ),
FUNCTION(replace, 3, 0, 0, replaceFunc ),
FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ),
#ifdef SQLITE_SOUNDEX