जॉइन Examsbookउत्तर :
EXPLAIN has output with MATCHCOLS = 0. What does it mean?5
प्र: EXPLAIN has output with MATCHCOLS = 0. What does it mean?
- उत्तर देखेंउत्तर छिपाएं
- Workspace
उत्तर :
व्याख्या :
a nonmatching index scan if ACCESSTYPE = 1

