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其他系统函数

GaussDB KernelopenGauss的内建函数和操作符继承自开源PG,下述函数不作赘述,详情请参见PG官方文档

_pg_char_max_length

_pg_char_octet_length

_pg_datetime_precision

_pg_expandarray

_pg_index_position

_pg_interval_type

_pg_numeric_precision

_pg_numeric_precision_radix

_pg_numeric_scale

_pg_truetypid

_pg_truetypmod

abbrev

abs

abstime

abstimeeq

abstimege

abstimegt

abstimein

abstimele

abstimelt

abstimene

abstimeout

abstimerecv

abstimesend

aclcontains

acldefault

aclexplode

aclinsert

aclitemeq

aclitemin

aclitemout

aclremove

acos

age

akeys

any_in

any_out

anyarray_in

anyarray_out

anyarray_recv

anyarray_send

anyelement_in

anyelement_out

anyenum_in

anyenum_out

anynonarray_in

anynonarray_out

anyrange_in

anyrange_out

anytextcat

area

areajoinsel

areasel

array_agg

array_agg_finalfn

array_agg_transfn

array_append

array_cat

array_dims

array_eq

array_fill

array_ge

array_gt

array_in

array_larger

array_le

array_length

array_lower

array_lt

array_ndims

array_ne

array_out

array_prepend

array_recv

array_send

array_smaller

array_to_json

array_to_string

array_typanalyze

array_upper

arraycontained

arraycontains

arraycontjoinsel

arraycontsel

arrayoverlap

ascii

asin

atan

atan2

avals

avg

big5_to_euc_tw

big5_to_mic

big5_to_utf8

bit

bit_and

bit_in

bit_length

bit_or

bit_out

bit_recv

bit_send

bitand

bitcat

bitcmp

biteq

bitge

bitgt

bitle

bitlt

bitne

bitnot

bitor

bitshiftleft

bitshiftright

bittypmodin

bittypmodout

bitxor

bool

bool_and

bool_or

booland_statefunc

booleq

boolge

boolgt

boolin

boolle

boollt

boolne

boolor_statefunc

boolout

boolrecv

boolsend

box

box_above

box_above_eq

box_add

box_below

box_below_eq

box_center

box_contain

box_contain_pt

box_contained

box_distance

box_div

box_eq

box_ge

box_gt

box_in

box_intersect

box_le

box_left

box_lt

box_mul

box_out

box_overabove

box_overbelow

box_overlap

box_overleft

box_overright

box_recv

box_right

box_same

box_send

box_sub

bpchar

bpchar_larger

bpchar_pattern_ge

bpchar_pattern_gt

bpchar_pattern_le

bpchar_pattern_lt

bpchar_smaller

bpchar_sortsupport

bpcharcmp

bpchareq

bpcharge

bpchargt

bpchariclike

bpcharicnlike

bpcharicregexeq

bpcharicregexne

bpcharin

bpcharle

bpcharlike

bpcharlt

bpcharne

bpcharnlike

bpcharout

bpcharrecv

bpcharregexeq

bpcharregexne

bpcharsend

bpchartypmodin

bpchartypmodout

broadcast

btabstimecmp

btarraycmp

btbeginscan

btboolcmp

btbpchar_pattern_cmp

btbuild

btbuildempty

btbulkdelete

btcanreturn

btcharcmp

btcostestimate

btendscan

btfloat48cmp

btfloat4cmp

btfloat4sortsupport

btfloat84cmp

btfloat8cmp

btfloat8sortsupport

btgetbitmap

btgettuple

btinsert

btint24cmp

btint28cmp

btint2cmp

btint2sortsupport

btint42cmp

btint48cmp

btint4cmp

btint4sortsupport

btint82cmp

btint84cmp

btint8cmp

btint8sortsupport

btmarkpos

btnamecmp

btnamesortsupport

btoidcmp

btoidsortsupport

btoidvectorcmp

btoptions

btrecordcmp

btreltimecmp

btrescan

btrestrpos

btrim

bttext_pattern_cmp

bttextcmp

bttextsortsupport

bttidcmp

bttintervalcmp

btvacuumcleanup

bytea_sortsupport

bytea_string_agg_finalfn

bytea_string_agg_transfn

byteacat

byteacmp

byteaeq

byteage

byteagt

byteain

byteale

bytealike

bytealt

byteane

byteanlike

byteaout

bytearecv

byteasend

cash_cmp

cash_div_cash

cash_div_flt4

cash_div_flt8

cash_div_int2

cash_div_int4

cash_div_int8

cash_eq

cash_ge

cash_gt

cash_in

cash_le

cash_lt

cash_mi

cash_mul_flt4

cash_mul_flt8

cash_mul_int2

cash_mul_int4

cash_mul_int8

cash_ne

cash_out

cash_pl

cash_recv

cash_send

cashlarger

cashsmaller

cbrt

ceil

ceiling

center

char

char_length

character_length

chareq

charge

chargt

charin

charle

charlt

charne

charout

charrecv

charsend

chr

cideq

cidin

cidout

cidr

cidr_in

cidr_out

cidr_recv

cidr_send

cidrecv

cidsend

circle

circle_above

circle_add_pt

circle_below

circle_center

circle_contain

circle_contain_pt

circle_contained

circle_distance

circle_div_pt

circle_eq

circle_ge

circle_gt

circle_in

circle_le

circle_left

circle_lt

circle_mul_pt

circle_ne

circle_out

circle_overabove

circle_overbelow

circle_overlap

circle_overleft

circle_overright

circle_recv

circle_right

circle_same

circle_send

circle_sub_pt

clock_timestamp

close_lb

close_ls

close_lseg

close_pb

close_pl

close_ps

close_sb

close_sl

col_description

concat

concat_ws

contjoinsel

contsel

convert

convert_from

convert_to

corr

cos

cot

count

covar_pop

covar_samp

cstring_in

cstring_out

cstring_recv

cstring_send

cume_dist

current_database

current_query

current_schema

xpath_exists

current_setting

current_user

currtid

currtid2

currval

cursor_to_xml

cursor_to_xmlschema

database_to_xml

database_to_xml_and_xmlschema

database_to_xmlschema

date

date_cmp

date_cmp_timestamp

date_cmp_timestamptz

date_eq

date_eq_timestamp

date_eq_timestamptz

date_ge

date_ge_timestamp

date_ge_timestamptz

date_gt

date_gt_timestamp

date_gt_timestamptz

date_in

date_larger

date_le

date_le_timestamp

date_le_timestamptz

date_lt

date_lt_timestamp

date_lt_timestamptz

date_mi

date_mi_interval

date_mii

date_ne

date_ne_timestamp

date_ne_timestamptz

date_out

date_pl_interval

date_pli

date_recv

date_send

date_smaller

date_sortsupport

daterange_canonical

daterange_subdiff

datetime_pl

datetimetz_pl

dcbrt

decode

defined

degrees

delete

dense_rank

dexp

diagonal

diameter

dispell_init

dispell_lexize

dist_cpoly

dist_lb

dist_pb

dist_pc

dist_pl

dist_ppath

dist_ps

dist_sb

dist_sl

div

dlog1

dlog10

domain_in

domain_recv

dpow

dround

dsimple_init

dsimple_lexize

dsnowball_init

dsnowball_lexize

dsqrt

dsynonym_init

dsynonym_lexize

dtrunc

each

enum_ne

enum_out

enum_range

enum_recv

enum_send

enum_smaller

eqjoinsel

eqsel

euc_cn_to_mic

euc_cn_to_utf8

euc_jis_2004_to_shift_jis_2004

euc_jis_2004_to_utf8

euc_jp_to_mic

euc_jp_to_sjis

euc_jp_to_utf8

euc_kr_to_mic

euc_kr_to_utf8

euc_tw_to_big5

euc_tw_to_mic

euc_tw_to_utf8

every

exist

exists_all

exists_any

exp

factorial

family

fdw_handler_in

fdw_handler_out

fetchval

first_value

float4

float4_accum

float48div

float48eq

float48ge

float48gt

float48le

float48lt

float48mi

float48mul

float48ne

float48pl

float4abs

float4div

float4eq

float4ge

float4gt

float4in

float4larger

float4le

float4lt

float4mi

float4mul

float4ne

float4out

float4pl

float4recv

float4send

float4smaller

float4um

float4up

float8

float8_accum

float8_avg

float8_collect

float8_corr

float8_covar_pop

float8_covar_samp

float8_regr_accum

float8_regr_avgx

float8_regr_avgy

float8_regr_collect

float8_regr_intercept

float8_regr_r2

float8_regr_slope

float8_regr_sxx

float8_regr_sxy

float8_regr_syy

float8_stddev_pop

float8_stddev_samp

float8_var_pop

float8_var_samp

float84div

float84eq

float84ge

float84gt

float84le

float84lt

float84mi

float84mul

float84ne

float84pl

float8abs

float8div

float8eq

float8ge

float8gt

float8in

float8larger

float8le

float8lt

float8mi

float8mul

float8ne

float8out

float8pl

float8recv

float8send

float8smaller

float8um

float8up

floor

flt4_mul_cash

flt8_mul_cash

fmgr_c_validator

fmgr_internal_validator

fmgr_sql_validator

format

format_type

gb18030_to_utf8

gbk_to_utf8

generate_series

generate_subscripts

get_bit

get_byte

get_current_ts_config

-

-

gin_clean_pending_list

gin_cmp_prefix

gin_cmp_tslexeme

gin_extract_tsquery

gin_extract_tsvector

gin_tsquery_consistent

gin_tsquery_triconsistent

ginarrayconsistent

ginarrayextract

ginarraytriconsistent

ginbeginscan

ginbuild

ginbuildempty

ginbulkdelete

gincostestimate

ginendscan

gingetbitmap

gininsert

ginmarkpos

ginoptions

ginqueryarrayextract

ginrescan

ginrestrpos

ginvacuumcleanup

gist_box_compress

gist_box_consistent

gist_box_decompress

gist_box_penalty

gist_box_picksplit

gist_box_same

gist_box_union

gist_circle_compress

gist_circle_consistent

gist_point_compress

gist_point_consistent

gist_point_distance

gist_poly_compress

gist_poly_consistent

gistbeginscan

gistbuild

gistbuildempty

gistbulkdelete

gistcostestimate

gistendscan

gistgetbitmap

gistgettuple

gistinsert

gistmarkpos

gistoptions

gistrescan

gistrestrpos

gistvacuumcleanup

gtsquery_compress

gtsquery_consistent

gtsquery_decompress

gtsquery_penalty

gtsquery_picksplit

gtsquery_same

gtsquery_union

gtsvector_compress

gtsvector_consistent

gtsvector_decompress

gtsvector_penalty

gtsvector_picksplit

gtsvector_same

gtsvector_union

gtsvectorin

gtsvectorout

has_tablespace_privilege

has_type_privilege

hash_aclitem

hashbeginscan

hashbuild

hashbuildempty

hashbulkdelete

hashcostestimate

hashendscan

hashgetbitmap

hashgettuple

hashinsert

hashint2vector

hashint4

hashint8

hashmacaddr

hashmarkpos

hashname

hashoid

hashoidvector

hashoptions

hashrescan

hashrestrpos

hashtext

hashvacuumcleanup

hashvarlena

host

hostmask

iclikejoinsel

iclikesel

icnlikejoinsel

icnlikesel

icregexeqjoinsel

icregexeqsel

icregexnejoinsel

icregexnesel

inet_client_addr

inet_client_port

inet_in

inet_out

inet_recv

inet_send

inet_server_addr

inet_server_port

inetand

inetmi

inetmi_int8

inetnot

inetor

inetpl

initcap

int2_accum

int2_avg_accum

int2_mul_cash

int2_sum

int24div

int24eq

int24ge

int24gt

int24le

int24lt

int24mi

int24mul

int24ne

int24pl

int28div

int28eq

int28ge

int28gt

int28le

int28lt

int28mi

int28mul

int28ne

int28pl

int2abs

int2and

int2div

int2eq

int2ge

int2gt

int2in

int2larger

int2le

int2lt

int2mi

int2mod

int2mul

int2ne

int2not

int2or

int2out

int2pl

int2recv

int2send

int2shl

int2shr

int2smaller

int2um

int2up

int2vectoreq

int2vectorin

int2vectorout

int2vectorrecv

int2vectorsend

int2xor

int4_accum

int4_avg_accum

int4_mul_cash

int4_sum

int42div

int42eq

int42ge

int42gt

int42le

int42lt

int42mi

int42mul

int42ne

int42pl

int48div

int48eq

int48ge

int48gt

int48le

int48lt

int48mi

int48mul

int48ne

int48pl

int4abs

int4and

int4div

int4eq

int4ge

int4gt

int4in

int4inc

int4larger

int4le

int4lt

int4mi

int4mod

int4mul

int4ne

int4not

int4or

int4out

int4pl

int4range

int4range_canonical

int4range_subdiff

int4recv

int4send

int4shl

int4shr

int4smaller

int4um

int4up

int4xor

int8

int8_avg

int8_avg_accum

int8_avg_collect

int8_mul_cash

int8_sum

int8_sum_to_int8

int8_accum

int82div

int82eq

int82ge

int82gt

int82le

int82lt

int82mi

int82mul

int82ne

int82pl

int84div

int84eq

int84ge

int84gt

int84le

int84lt

int84mi

int84mul

int84ne

int84pl

int8abs

int8and

int8div

int8eq

int8ge

int8gt

int8in

int8inc

int8inc_any

int8inc_float8_float8

int8larger

int8le

int8lt

int8mi

int8mod

int8mul

int8ne

int8not

int8or

int8out

int8pl

int8pl_inet

int8range

int8range_canonical

int8range_subdiff

int8recv

int8send

int8shl

int8shr

int8smaller

int8um

int8up

int8xor

integer_pl_date

inter_lb

inter_sb

inter_sl

internal_in

internal_out

interval

interval_accum

interval_avg

interval_cmp

interval_collect

interval_div

interval_eq

interval_ge

interval_gt

interval_hash

interval_in

interval_larger

interval_le

interval_lt

interval_mi

interval_mul

interval_ne

interval_out

interval_pl

interval_pl_date

interval_pl_time

interval_pl_timestamp

interval_pl_timestamptz

interval_pl_timetz

interval_recv

interval_send

interval_smaller

interval_transform

interval_um

intervaltypmodin

intervaltypmodout

intinterval

isexists

ishorizontal

iso_to_koi8r

iso_to_mic

iso_to_win1251

iso_to_win866

iso8859_1_to_utf8

iso8859_to_utf8

isparallel

isperp

isvertical

johab_to_utf8

json_in

json_out

json_recv

json_send

justify_days

justify_hours

justify_interval

koi8r_to_iso

koi8r_to_mic

koi8r_to_utf8

koi8r_to_win1251

koi8r_to_win866

koi8u_to_utf8

language_handler_in

language_handler_out

latin1_to_mic

latin2_to_mic

latin2_to_win1250

latin3_to_mic

latin4_to_mic

like_escape

likejoinsel

likesel

line

line_distance

line_eq

line_horizontal

line_in

line_interpt

line_intersect

line_out

line_parallel

line_perp

line_recv

line_send

line_vertical

ln

lo_close

lo_creat

lo_create

lo_export

lo_import

lo_lseek

lo_open

lo_tell

lo_truncate

lo_unlink

log

loread

lower

lower_inc

lower_inf

lowrite

lpad

lseg

lseg_center

lseg_distance

lseg_eq

lseg_ge

lseg_gt

lseg_horizontal

lseg_in

lseg_interpt

lseg_intersect

lseg_le

lseg_length

lseg_lt

lseg_ne

lseg_out

lseg_parallel

lseg_perp

lseg_recv

lseg_send

lseg_vertical

ltrim

macaddr_and

macaddr_cmp

macaddr_eq

macaddr_ge

macaddr_gt

macaddr_in

macaddr_le

macaddr_lt

macaddr_ne

macaddr_not

macaddr_or

macaddr_out

macaddr_recv

macaddr_send

makeaclitem

masklen

max

md5

mic_to_big5

mic_to_euc_cn

mic_to_euc_jp

mic_to_euc_kr

mic_to_euc_tw

mic_to_iso

mic_to_koi8r

mic_to_latin1

mic_to_latin2

mic_to_latin3

mic_to_latin4

mic_to_sjis

mic_to_win1250

mic_to_win1251

mic_to_win866

min

mktinterval

money

mul_d_interval

name

nameeq

namege

namegt

nameiclike

nameicnlike

nameicregexeq

nameicregexne

namein

namele

namelike

namelt

namene

namenlike

nameout

namerecv

nameregexeq

nameregexne

namesend

neqjoinsel

neqsel

network_cmp

network_eq

network_ge

network_gt

network_le

network_lt

network_ne

network_sub

network_subeq

network_sup

network_supeq

nlikejoinsel

nlikesel

numeric

numeric_abs

numeric_accum

numeric_add

numeric_avg

numeric_avg_accum

numeric_avg_collect

numeric_cmp

numeric_collect

numeric_div

numeric_div_trunc

numeric_eq

numeric_exp

numeric_fac

numeric_ge

numeric_gt

numeric_in

numeric_inc

numeric_larger

numeric_le

numeric_ln

numeric_log

numeric_lt

numeric_mod

numeric_mul

numeric_ne

numeric_out

numeric_power

numeric_recv

numeric_send

numeric_smaller

numeric_sortsupport

numeric_sqrt

numeric_stddev_pop

numeric_stddev_samp

numeric_sub

numeric_transform

numeric_uminus

numeric_uplus

numeric_var_pop

numeric_var_samp

numerictypmodin

numerictypmodout

numrange_subdiff

oid

oideq

oidge

oidgt

oidin

oidlarger

oidle

oidlt

oidne

oidout

oidrecv

oidsend

oidsmaller

oidvectoreq

oidvectorge

oidvectorgt

oidvectorin

oidvectorle

oidvectorlt

oidvectorne

oidvectorout

oidvectorrecv

oidvectorsend

oidvectortypes

on_pb

on_pl

on_ppath

on_ps

on_sb

on_sl

opaque_in

opaque_out

ordered_set_transition

overlaps

overlay

path

path_add

path_add_pt

path_center

path_contain_pt

path_distance

path_div_pt

path_in

path_inter

path_length

path_mul_pt

path_n_eq

path_n_ge

path_n_gt

path_n_le

path_n_lt

path_npoints

path_out

path_recv

path_send

path_sub_pt

percentile_cont

percentile_cont_float8_final

percentile_cont_interval_final

pg_char_to_encoding

pg_cursor

pg_encoding_max_length

pg_encoding_to_char

pg_extension_config_dump

pg_logical_slot_get_binary_changes

pg_logical_slot_peek_binary_changes

pg_node_tree_in

pg_node_tree_out

pg_node_tree_recv

pg_node_tree_send

pg_prepared_statement

pg_prepared_xact

-

-

pg_show_all_settings

pg_stat_get_bgwriter_stat_reset_time

pg_stat_get_buf_fsync_backend

pg_stat_get_checkpoint_sync_time

pg_stat_get_checkpoint_write_time

pg_stat_get_db_blk_read_time

pg_stat_get_db_blk_write_time

pg_stat_get_db_conflict_all

pg_stat_get_db_conflict_bufferpin

pg_stat_get_db_conflict_snapshot

pg_stat_get_db_conflict_startup_deadlock

pg_switch_xlog

xpath

pg_timezone_abbrevs

pg_timezone_names

-

plpgsql_call_handler

plpgsql_inline_handler

plpgsql_validator

point_above

point_add

point_below

point_distance

point_div

point_eq

point_horiz

point_in

point_left

point_mul

point_ne

point_out

point_recv

point_right

point_send

point_sub

point_vert

poly_above

poly_below

poly_center

poly_contain

poly_contain_pt

poly_contained

poly_distance

poly_in

poly_left

poly_npoints

poly_out

poly_overabove

poly_overbelow

poly_overlap

poly_overleft

poly_overright

poly_recv

poly_right

poly_same

poly_send

polygon

position

positionjoinsel

positionsel

postgresql_fdw_validator

pow

power

prsd_end

prsd_headline

prsd_lextype

prsd_nexttoken

prsd_start

pt_contained_circle

pt_contained_poly

query_to_xml

query_to_xml_and_xmlschema

query_to_xmlschema

quote_ident

quote_literal

quote_nullable

radians

radius

random

range_adjacent

range_after

range_before

range_cmp

range_contained_by

range_contains

range_contains_elem

range_eq

range_ge

range_gist_compress

range_gist_consistent

range_gist_decompress

range_gist_penalty

range_gist_picksplit

range_gist_same

range_gist_union

range_gt

range_in

range_intersect

range_le

range_lt

range_minus

range_ne

range_out

range_overlaps

range_overleft

range_overright

range_recv

range_send

range_typanalyze

range_union

rank

record_eq

record_ge

record_gt

record_in

record_le

record_lt

record_ne

record_out

record_recv

record_send

regclass

regclassin

regclassout

regclassrecv

regclasssend

regconfigin

regconfigout

regconfigrecv

regconfigsend

regdictionaryin

regdictionaryout

regdictionaryrecv

regdictionarysend

regexeqjoinsel

regexeqsel

regexnejoinsel

regexnesel

regexp_matches

regexp_replace

regexp_split_to_array

regexp_split_to_table

regoperatorin

regoperatorout

regoperatorrecv

regoperatorsend

regoperin

regoperout

regoperrecv

regopersend

regprocedurein

regprocedureout

regprocedurerecv

regproceduresend

regprocin

regprocout

regprocrecv

regprocsend

regr_avgx

regr_avgy

regr_count

regr_intercept

regr_r2

regr_slope

regr_sxx

regr_sxy

regr_syy

regtypein

regtypeout

regtyperecv

regtypesend

reltime

reltimeeq

reltimege

reltimegt

reltimein

reltimele

reltimelt

reltimene

reltimeout

reltimerecv

reltimesend

repeat

replace

reverse

RI_FKey_cascade_del

RI_FKey_cascade_upd

RI_FKey_check_ins

RI_FKey_check_upd

RI_FKey_noaction_del

RI_FKey_noaction_upd

RI_FKey_restrict_del

RI_FKey_restrict_upd

RI_FKey_setdefault_del

RI_FKey_setdefault_upd

RI_FKey_setnull_del

RI_FKey_setnull_upd

right

round

row_number

row_to_json

rpad

rtrim

scalargtjoinsel

scalargtsel

scalarltjoinsel

scalarltsel

schema_to_xml

schema_to_xml_and_xmlschema

schema_to_xmlschema

session_user

set_bit

set_byte

set_config

set_masklen

shift_jis_2004_to_euc_jis_2004

shift_jis_2004_to_utf8

sjis_to_euc_jp

sjis_to_mic

sjis_to_utf8

smgrin

smgrout

spg_kd_choose

spg_kd_config

spg_kd_inner_consistent

spg_kd_picksplit

spg_quad_choose

spg_quad_config

spg_quad_inner_consistent

spg_quad_leaf_consistent

spg_quad_picksplit

spg_text_choose

spg_text_config

spg_text_inner_consistent

spg_text_leaf_consistent

spg_text_picksplit

spgbeginscan

spgbuild

spgbuildempty

spgbulkdelete

spgcanreturn

spgcostestimate

spgendscan

spggetbitmap

spggettuple

spginsert

spgmarkpos

spgoptions

spgrescan

spgrestrpos

spgvacuumcleanup

stddev

stddev_pop

stddev_samp

string_agg

string_agg_finalfn

string_agg_transfn

strip

sum

suppress_redundant_updates_trigger

table_to_xml

table_to_xml_and_xmlschema

table_to_xmlschema

tan

text

text_ge

text_gt

text_larger

text_le

text_lt

text_pattern_ge

text_pattern_gt

text_pattern_le

text_pattern_lt

text_smaller

textanycat

textcat

texteq

texticlike

texticnlike

texticregexeq

texticregexne

textin

textlike

textne

textnlike

textout

textrecv

textregexeq

textregexne

textsend

thesaurus_init

thesaurus_lexize

tideq

tidge

tidgt

tidin

tidlarger

tidle

tidlt

tidne

tidout

tidrecv

tidsend

tidsmaller

time

time_cmp

time_eq

time_ge

time_gt

time_hash

time_in

time_larger

time_le

time_lt

time_mi_interval

time_mi_time

time_ne

time_out

time_pl_interval

time_recv

time_send

time_smaller

time_transform

timedate_pl

timemi

timepl

timestamp

timestamp_cmp

timestamp_cmp_date

timestamp_cmp_timestamptz

timestamp_eq

timestamp_eq_date

timestamp_eq_timestamptz

timestamp_ge

timestamp_ge_date

timestamp_ge_timestamptz

timestamp_gt

timestamp_gt_date

timestamp_gt_timestamptz

timestamp_hash

timestamp_in

timestamp_larger

timestamp_le

timestamp_le_date

timestamp_le_timestamptz

timestamp_lt

timestamp_lt_date

timestamp_lt_timestamptz

timestamp_mi

timestamp_mi_interval

timestamp_ne

timestamp_ne_date

timestamp_ne_timestamptz

timestamp_out

timestamp_pl_interval

timestamp_recv

timestamp_send

timestamp_smaller

timestamp_sortsupport

timestamp_transform

timestamptypmodin

timestamptypmodout

timestamptz

timestamptz_cmp

timestamptz_cmp_date

timestamptz_cmp_timestamp

timestamptz_eq

timestamptz_eq_date

timestamptz_eq_timestamp

timestamptz_ge

timestamptz_ge_date

timestamptz_ge_timestamp

timestamptz_gt

timestamptz_gt_date

timestamptz_gt_timestamp

timestamptz_in

timestamptz_larger

timestamptz_le

timestamptz_le_date

timestamptz_le_timestamp

timestamptz_lt

timestamptz_lt_date

timestamptz_lt_timestamp

timestamptz_mi

timestamptz_mi_interval

timestamptz_ne

timestamptz_ne_date

timestamptz_ne_timestamp

timestamptz_out

timestamptz_pl_interval

timestamptz_recv

timestamptz_send

timestamptz_smaller

timestamptztypmodin

timestamptztypmodout

timetypmodin

timetypmodout

timetz

timetz_cmp

timetz_eq

timetz_ge

timetz_gt

timetz_hash

timetz_in

timetz_larger

timetz_le

timetz_lt

timetz_mi_interval

timetz_ne

timetz_out

timetz_pl_interval

timetz_recv

timetz_send

timetz_smaller

timetzdate_pl

timetztypmodin

timetztypmodout

timezone(2069)

timezone(1159)

timezone(2037)

timezone (2070)

timezone (1026)

timezone (2038)

tintervalct

tintervaleq

tintervalge

tintervalgt

tintervalin

tintervalle

tintervalleneq

tintervallenge

tintervallengt

tintervallenle

tintervallenlt

tintervallenne

tintervallt

tintervalne

tintervalout

tintervalov

tintervalrecv

tintervalsame

tintervalsend

tintervalstart

to_ascii(1845)

to_ascii(1847)

to_ascii(1846)

trigger_in

trigger_out

ts_match_qv

ts_match_tq

ts_match_tt

ts_match_vq

ts_rank

ts_rank_cd

ts_rewrite

ts_stat

ts_token_type

ts_typanalyze

tsmatchjoinsel

tsmatchsel

tsq_mcontained

tsq_mcontains

tsquery_and

tsquery_cmp

tsquery_eq

tsquery_ge

tsquery_gt

tsquery_le

tsquery_lt

tsquery_ne

tsquery_not

tsquery_or

tsqueryin

tsqueryout

tsqueryrecv

tsquerysend

tsrange

tsrange_subdiff

tstzrange

tstzrange_subdiff

tsvector_cmp

tsvector_concat

tsvector_eq

tsvector_ge

tsvector_gt

tsvector_le

tsvector_lt

tsvector_ne

tsvector_update_trigger

tsvector_update_trigger_column

tsvectorin

tsvectorout

tsvectorrecv

tsvectorsend

txid_current

txid_current_snapshot

txid_snapshot_in

txid_snapshot_out

txid_snapshot_recv

txid_snapshot_send

txid_snapshot_xip

txid_snapshot_xmax

txid_snapshot_xmin

txid_visible_in_snapshot

uhc_to_utf8

unique_key_recheck

unknownin

unknownout

unknownrecv

unknownsend

unnest

utf8_to_big5

utf8_to_euc_cn

utf8_to_euc_jis_2004

utf8_to_euc_jp

utf8_to_euc_kr

utf8_to_euc_tw

utf8_to_gb18030

utf8_to_gbk

utf8_to_iso8859

utf8_to_iso8859_1

utf8_to_johab

utf8_to_koi8r

utf8_to_koi8u

utf8_to_shift_jis_2004

utf8_to_sjis

utf8_to_uhc

utf8_to_win

uuid_cmp

uuid_eq

uuid_ge

uuid_gt

uuid_hash

uuid_in

uuid_le

uuid_lt

uuid_ne

uuid_out

uuid_recv

uuid_send

var_pop

var_samp

varbit

varbit_in

varbit_out

varbit_recv

varbit_send

varbit_transform

varbitcmp

varbiteq

varbitge

varbitgt

varbitle

varbitlt

varbitne

varbittypmodin

varbittypmodout

varchar

varchar_transform

varcharin

varcharout

varcharrecv

varcharsend

varchartypmodin

varchartypmodout

variance

void_in

void_out

void_recv

void_send

win_to_utf8

win1250_to_latin2

win1250_to_mic

win1251_to_iso

win1251_to_koi8r

win1251_to_mic

win1251_to_win866

win866_to_iso

win866_to_koi8r

win866_to_mic

win866_to_win1251

xideq

xideqint4

xidin

xidout

xidrecv

xidsend

xml

xml_in

xml_is_well_formed

xml_is_well_formed_content

xml_is_well_formed_document

xml_out

xml_recv

xml_send

xmlagg

xmlcomment

xmlconcat2

xmlexists

xmlvalidate

pg_notify

pg_stat_get_wal_receiver

-

下述列表为GaussDB Kernel实现系统内部功能所使用的函数,不推荐使用,若需使用,请联系华为技术支持工程师。

  • smgreq(a smgr, b smgr)

    描述:比较两个smgr是否一样。

    参数:smgr, smgr

    返回值类型:boolean

  • smgrne(a smgr, b smgr)

    描述:判断两个smgr是否不一样。

    参数:smgr, smgr

    返回值类型:boolean

  • xidin4

    描述:输入4字节的xid。

    参数:cstring

    返回值类型:xid32

  • set_hashbucket_info

    描述:设置哈希桶信息。

    参数:text

    返回值类型:boolean

  • hs_concat

    描述:拼接两个hstore类型数据。

    参数:hstore, hstore

    返回值类型:hstore

  • hs_contained

    描述:判断两个hstore类型数据是否包含,返回值布尔类型。

    参数:hstore, hstore

    返回值类型:boolean

  • hs_contains

    描述:判断两个hstore类型数据是否包含,返回值布尔类型。

    参数:hstore, hstore

    返回值类型:boolean

  • hstore

    描述:将参数转为hstore类型。

    参数:text, text

    返回值类型:hstore

  • hstore_in

    描述:以string格式接收hstore数据。

    参数:cstring

    返回值类型:hstore

  • hstore_out

    描述:以string格式发送hstore数据。

    参数:hstore

    返回值类型:cstring

  • hstore_send

    描述:以bytea格式发送hstore数据。

    参数:hstore

    返回值类型:bytea

  • hstore_to_array

    描述:以text数组格式发送hstore数据。

    参数:hstore

    返回值类型:text[]

  • hstore_to_matrix

    描述:以text数组格式发送hstore数据。

    参数:hstore

    返回值类型:text[]

  • hstore_version_diag

    描述:以integer数组格式发送hstore数据。

    参数:hstore

    返回值类型:integer

  • int1send

    描述:将无符号一字节整数打包放入内部数据缓冲流。

    参数:tinyint

    返回值类型:bytea

  • isdefined

    描述:判断指定key是否存在。

    参数:hstore, text

    返回值类型:boolean

  • listagg

    描述:list类型agg聚集函数。

    参数:smallint, text

    返回值类型:text

  • log_fdw_validator

    描述:验证函数。

    参数:text[], oid

    返回值类型:void

  • nvarchar2typmodin

    描述:获取varchar的typmod信息。

    参数:cstring[]

    返回值类型:integer

  • nvarchar2typmodout

    描述:获取varchar的typmod信息,并构造字符串返回。

    参数:integer

    返回值类型:cstring

  • read_disable_conn_file

    描述:读取禁止的连接文件。

    参数:nan

    返回值类型:disconn_mode text, disconn_host text, disconn_port text, local_host text, local_port text, redo_finished text

  • regex_like_m

    描述:正则匹配,判断字符串是否符合给定的正则表达式。

    参数:text, text

    返回值类型:boolean

  • update_pgjob

    描述:更新job。

    参数:bigint, “char”, bigint, timestamp without time zone, timestamp without time zone, timestamp without time zone, timestamp without time zone, timestamp without time zone, smallint

    返回值类型:void

  • enum_cmp

    描述:枚举类比较函数,用于判断两个枚举类是否相等,以及相对大小。

    参数:anyenum, anyenum

    返回值类型:integer

  • enum_eq

    描述:枚举类比较函数,用于实现=符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • enum_first

    描述:返回枚举类中的第一个元素。

    参数:anyenum

    返回值类型:anyenum

  • enum_ge

    描述:枚举类比较函数,用于实现>=符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • enum_gt

    描述:枚举类比较函数,用于实现>符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • enum_in

    描述:枚举类比较函数,用于判断元素是否在枚举类中。

    参数:cstring, oid

    返回值类型:anyenum

  • enum_larger

    描述:枚举类比较函数,用于实现>符号。

    参数:anyenum, anyenum

    返回值类型:anyenum

  • enum_last

    描述:返回枚举类中的最后一个元素。

    参数:anyenum

    返回值类型:anyenum

  • enum_le

    描述:枚举类比较函数,用于实现<=符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • enum_lt

    描述:枚举类比较函数,用于实现<符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • enum_smaller

    描述:枚举类比较函数,用于实现<符号。

    参数:anyenum, anyenum

    返回值类型:boolean

  • node_oid_name

    描述:不支持。

    参数:oid

    返回值类型:cstring

  • pg_buffercache_pages

    描述:从共享buffer缓存里读取数据。

    参数:nan

    返回值类型:bufferid integer, relfilenode oid, bucketid smallint, reltablespace oid, reldatabase oid, relforknumber smallint, relblocknumber bigint, isdirty boolean, usage_count smallint

  • pg_check_xidlimit

    描述:判断nextxid是否>= xidwarnlimit。

    参数:nan

    返回值类型:boolean

  • pg_comm_delay

    描述:展示单个DN的通信库时延状态

    参数:nan

    返回值类型:text, text, integer, integer, integer, integer

  • pg_comm_recv_stream

    描述:展示单个DN上所有的通信库接收流状态

    参数:nan

    返回值类型:text, bigint, text, bigint, integer, integer, integer, text, bigint, integer, integer, integer, bigint, bigint, bigint, bigint, bigint

  • pg_comm_send_stream

    描述:展示单个DN上所有的通信库发送流状态

    参数:nan

    返回值类型:text, bigint, text, bigint, integer, integer, integer, text, bigint, integer, integer, integer, bigint, bigint, bigint, bigint, bigint

  • pg_comm_status

    描述: 展示单个DN的通信状态

    参数:nan

    返回值类型:text, integer, integer, bigint, bigint, bigint, bigint, bigint, integer, integer, integer, integer, integer

  • pg_log_comm_status

    描述:在DN上打印一些log。

    参数:nan

    返回值类型:boolean

  • pg_parse_clog

    描述:解析clog获取xid的status。

    参数:nan

    返回值类型:xid xid, status text

  • pg_pool_ping

    描述:设置PoolerPing。

    参数:boolean

    返回值类型:SETOF boolean

  • pg_resume_bkp_flag

    描述:用于备份恢复获取delay xlong标志。

    参数:slot_name name

    返回值类型:start_backup_flag boolean, to_delay boolean, ddl_delay_recycle_ptr text, rewind_time text

  • psortoptions

    描述:返回psort属性。

    参数:text[], boolean

    返回值类型:bytea

  • xideq4

    描述:对比两个xid类型的值是否相等。

    参数:xid32, xid32

    返回值类型:boolean

  • xideqint8

    描述:对比xid类型和int8类型的值是否相等。

    参数:xid, bigint

    返回值类型:boolean

  • xidlt

    描述:返回xid1 < xid2是否成立。

    参数:xid, xid

    返回值类型:boolean

  • xidlt4

    描述:返回xid1 < xid2是否成立。

    参数:xid32, xid32

    返回值类型:boolean

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