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add IS NULL/IS NOT NULL support, patches

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brianb
2004-02-06 23:55:18 +00:00
parent af7b6953ad
commit 5f02ba4fd2
10 changed files with 211 additions and 145 deletions
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8
src/libmdb/index.c
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@@ -212,7 +212,7 @@ mdb_index_cache_sarg(MdbColumn *col, MdbSarg *sarg, MdbSarg *idx_sarg)
//cache_int = sarg->value.i * -1;
c = (unsigned char *) &(idx_sarg->value.i);
c[0] |= 0x80;
//printf("int %08x %02x %02x %02x %02x\n", sarg->value.i, c[0], c[1], c[2], c[3]);
printf("int %08x %02x %02x %02x %02x\n", sarg->value.i, c[0], c[1], c[2], c[3]);
break;
case MDB_INT:
@@ -259,6 +259,7 @@ mdb_index_test_sargs(MdbHandle *mdb, MdbIndex *idx, int offset, int len)
MdbTableDef *table = idx->table;
MdbSarg *idx_sarg;
MdbSarg *sarg;
MdbField field;
MdbSargNode node;
int c_offset = 0, c_len;
@@ -298,7 +299,10 @@ mdb_index_test_sargs(MdbHandle *mdb, MdbIndex *idx, int offset, int len)
/* XXX - kludge */
node.op = sarg->op;
node.value = sarg->value;
if (!mdb_test_sarg(mdb, col, &node, &mdb->pg_buf[offset + c_offset], c_len)) {
field.value = &mdb->pg_buf[offset + c_offset];
field.siz = c_len;
field.is_null = FALSE;
if (!mdb_test_sarg(mdb, col, &node, &field)) {
/* sarg didn't match, no sense going on */
return 0;
}