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Add a new built-in subtype() function.

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FossilOrigin-Name: a25f4ce255c034fc694c33728aedb98289ebccda9c48920829ef780b92b8faee
This commit is contained in:
drh
2022-01-09 16:54:02 +00:00
parent daefcd9e00
commit 9d44f18b3c
3 changed files with 19 additions and 7 deletions
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12
src/func.c
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@@ -97,6 +97,17 @@ static void typeofFunc(
sqlite3_result_text(context, azType[i], -1, SQLITE_STATIC);
}
/* subtype(X)
**
** Return the subtype of X
*/
static void subtypeFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
sqlite3_result_int(context, sqlite3_value_subtype(argv[0]));
}
/*
** Implementation of the length() function
@@ -2246,6 +2257,7 @@ void sqlite3RegisterBuiltinFunctions(void){
WAGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize, minMaxValue, 0,
SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ),
FUNCTION2(typeof, 1, 0, 0, typeofFunc, SQLITE_FUNC_TYPEOF),
FUNCTION2(subtype, 1, 0, 0, subtypeFunc, SQLITE_FUNC_TYPEOF),
FUNCTION2(length, 1, 0, 0, lengthFunc, SQLITE_FUNC_LENGTH),
FUNCTION(instr, 2, 0, 0, instrFunc ),
FUNCTION(printf, -1, 0, 0, printfFunc ),