[TD_SYSFNLIB.] SHIFTLEFT ( target_arg, num_bits_arg )
Syntax Elements
- TD_SYSFNLIB.
- Name of the database where the function is located.
- target_arg
- A numeric or variable byte expression.
- num_bits_arg
- An integer expression indicating the number of bit positions to shift.
| IF... | THEN the function... |
|---|---|
| num_bits_arg is equal to zero | returns target_arg unchanged. |
| num_bits_arg is negative | shifts the bits to the right instead of the left. |
| target_arg and/or num_bits_arg are NULL | returns NULL. |
| num_bits_arg is larger than the size of target_arg | returns an error. The scope of the shift operation is bounded by the size of the target_arg expression. Specifying a shift that is outside the range of target_arg results in an SQL error. |
When operating against an integer value (BYTEINT, SMALLINT, INTEGER, or BIGINT), shifting a bit into the most significant position will result in the integer becoming negative. This is because all integers in Vantage are signed integers.