enhancementgood first issue
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描述
CrateDB supports a variety of scalar functions, see https://github.com/crate/cratedb-django/commit/810485ef947a00969586a94338da988dce83c74f for an example implementing gen_random_text_uuid
strings
- concat
- concat_ws
- format
- substr
- substring
- char_length
- length
- bit_length
- octet_length
- ascii
- chr
- lower
- upper
- initcap
- sha1
- md5
- replace
- translate
- trim
- ltrim
- rtrim
- btrim
- quote_ident
- left
- right
- starts_with
- lpad
- rpad
- encode
- decode
- repeat
- strpos
- position
- reverse
- split_part
- parse_uri
- parse_url
math
- abs
- sign
- ceil
- ceiling
- degrees
- exp
- floor
- ln
- log
- modulus
- mod
- power
- radians
- random
- gen_random_text_uuid
- round
- trunc
- sqrt
- sin
- asin
- cos
- acos
- tan
- cot
- atan
- atan2
- pi
time
- date_trunc
- date_bin
- extract
- current_time
- current_timestamp
- curdate
- current_date
- now
- date_format
- timezone
- to_char
- age
array
- array_append
- array_cat
- array_unique
- array_difference
- array
- array_upper
- array_length
- array_lower
- array_overlap
- array_set
- array_slice
- array_to_string
- string_to_array
- array_min
- array_position
- array_prepend
- array_max
- array_sum
- array_avg
- array_unnest
- null_or_empty
objects
- object_keys
- concat
- null_or_empty
regex
- regexp_replace
geo
- distance
- within
- intersects
- latitude
- longitude
- geohash
- area
conditional
- case
- if
- coalesce
- greatest
- least
- nullif
system
- current_schema
- current_schemas
- current_user
- current_role
- user
- session_user
- has_database_privilege
- has_schema_privilege
- has_table_privilege
- pg_backend_pid
- pg_postmaster_start_time
- current_catalog
- current_database
- current_setting
- pg_get_expr
- pg_get_partkeydef
- pg_get_serial_sequence
- pg_encoding_to_char
- pg_get_userbyid
- pg_typeof
- pg_function_is_visible
special functions
- knn_match
- ignore3vl
vector functions
- vector_similarity