PostgreSQL_CE
PGCES-02 · Question #88
Select three SQL statements which return NULL.
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Data Management and SQL
Question
Select three SQL statements which return NULL.
Options
- ASELECT 0 = NULL;
- BSELECTNULL != NULL;
- CSELECT NULL IS NULL;
- DSELECT NULL;
- ESELECT 'null'::TEXT;
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Topics
#SQL NULL#NULL comparison#NULL behavior#PostgreSQL