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SUBSTR

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Deprecated: use GETRANGE instead.

SUBSTR key start end
Group
String
Complexity
O(N) where N is the length of the returned substring
Arity
4 (exactly, counting the command name)
Flags
read-only
Keys
first 1, last 1, step 1
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SUBSTR is an older name for GETRANGE and behaves the same way: it returns the bytes from start to end, both included, with negative offsets counting from the end. Use GETRANGE in new code.

Return value

Section titled “Return value”
Case RESP2 RESP3
Always Bulk string: the substring (possibly empty) Bulk string

The errors are those of GETRANGE.

Examples

Section titled “Examples”
127.0.0.1:6379> SET phrase "hotkv rocks"
OK
127.0.0.1:6379> SUBSTR phrase 0 4
"hotkv"

Compatibility

Section titled “Compatibility”

Same as Redis 7 and Valkey 8, where it is also deprecated.

See also

Section titled “See also”

GETRANGE, STRLEN