Function support: postgresql

What is specific to postgresql: the rendering column is filled in only where this dialect departs from the standard one. The canonical form, and the SQL every dialect generates for a sample query, are on the function pages.

Function Category Kind Status Dialect rendering Notes
< comparison scalar standard
<= comparison scalar standard
<> comparison scalar standard
= comparison scalar standard
> comparison scalar standard
>= comparison scalar standard
AND logical scalar standard
BETWEEN comparison scalar standard
DISTINCT comparison scalar standard
IN comparison scalar standard
ISNULL comparison scalar standard
LIKE comparison scalar standard
NOT logical scalar standard
OR logical scalar standard
abs math scalar standard
acos math scalar standard
add arithmetic scalar standard
ascii string scalar standard
asin math scalar standard
at_zone datetime scalar standard
atan math scalar standard
avg aggregate aggregate standard
bit_and other aggregate native bit_and(…)
bit_length string scalar standard
bit_or other aggregate native bit_or(…)
bit_xor other aggregate native bit_xor(…)
calendar_distance datetime scalar standard
case conditional scalar standard
ceil math scalar standard
char_length string scalar standard
chr string scalar standard
clock_now datetime scalar overridden clock_timestamp()
coalesce conditional scalar standard
concat string scalar standard
concat_ws string scalar standard
cos math scalar standard
count aggregate aggregate standard
count_distinct aggregate aggregate standard no OVER clause
date_trunc datetime scalar standard
day datetime scalar overridden EXTRACT(DAY FROM value)
day_add datetime scalar overridden (value + n * INTERVAL '1 day')
day_begin datetime scalar standard
dayofweek datetime scalar overridden EXTRACT(ISODOW FROM value)
dayofyear datetime scalar overridden EXTRACT(DOY FROM value)
days_between datetime scalar overridden CAST(trunc(EXTRACT(EPOCH FROM (CAST(end AS timestamp) - CAST(start AS timestamp))) / 86400.0) AS INTEGER)
dense_rank window window standard
divide arithmetic scalar standard
exp math scalar standard
floor math scalar standard
format other scalar native format(…)
greatest math scalar standard
hour datetime scalar overridden EXTRACT(HOUR FROM value)
initcap string scalar standard
lag window window standard
lead window window standard
least math scalar standard
left string scalar standard
ln math scalar standard
log math scalar standard
log10 math scalar standard
lower string scalar standard
lpad string scalar standard
ltrim string scalar standard
make_date datetime scalar standard
make_time datetime scalar standard
make_timestamp datetime scalar standard
max aggregate aggregate standard
md5 string scalar standard
min aggregate aggregate standard
minus arithmetic scalar standard
minute datetime scalar overridden EXTRACT(MINUTE FROM value)
mod math scalar standard
month datetime scalar overridden EXTRACT(MONTH FROM value)
month_add datetime scalar overridden (value + n * INTERVAL '1 month')
month_begin datetime scalar standard
month_end datetime scalar overridden CAST(date_trunc('month', value) + INTERVAL '1 month - 1 day' AS DATE)
months_between datetime scalar standard
multiply arithmetic scalar standard
negate arithmetic scalar standard
now datetime scalar overridden statement_timestamp()
ntile window window standard
nullif conditional scalar standard
octet_length string scalar standard
overlay string scalar standard
parse_date datetime scalar overridden TO_DATE(value, format)
parse_time datetime scalar overridden TO_TIMESTAMP(value, format)::TIME
parse_timestamp datetime scalar overridden TO_TIMESTAMP(value, format)::TIMESTAMP
pi math scalar standard
position string scalar standard
power math scalar standard results differ
quarter datetime scalar overridden EXTRACT(QUARTER FROM value)
quarter_begin datetime scalar standard
quarter_end datetime scalar overridden CAST(date_trunc('quarter', value) + INTERVAL '3 months - 1 day' AS DATE)
random math scalar standard
rank window window standard
regexp_count pattern_matching scalar standard
regexp_like pattern_matching scalar standard
regexp_replace pattern_matching scalar overridden regexp_replace(string, pattern, replacement, 'g')
regexp_substr pattern_matching scalar standard
repeat string scalar standard
replace string scalar standard
reverse string scalar standard
right string scalar standard
round math scalar overridden round(value)
round(CAST(value AS numeric), scale)
row_number window window standard
rpad string scalar standard
rtrim string scalar standard
second datetime scalar overridden EXTRACT(SECOND FROM value)
sha256 other scalar native sha256(…)
sign math scalar standard
sin math scalar standard
split_part string scalar standard
sqrt math scalar standard
starts_with string scalar standard
string_agg aggregate aggregate standard
substring string scalar standard
sum aggregate aggregate standard
tan math scalar standard
to_bigint conversion scalar standard
to_boolean conversion scalar overridden (value <> 0)
to_char formatting scalar standard
to_date conversion scalar standard
to_decimal conversion scalar standard
to_double conversion scalar overridden CAST(value AS DOUBLE PRECISION)
to_float conversion scalar standard
to_hex string scalar overridden upper(to_hex(number))
to_integer conversion scalar standard
to_number formatting scalar standard
to_smallint conversion scalar standard
to_text conversion scalar standard
to_time conversion scalar standard
to_timestamp conversion scalar standard
to_utc datetime scalar standard
to_varchar conversion scalar standard
today datetime scalar standard
translate string scalar standard
trim string scalar standard
trunc math scalar overridden trunc(value)
trunc(CAST(value AS numeric), scale)
upper string scalar standard
week datetime scalar overridden EXTRACT(WEEK FROM value)
week_begin datetime scalar standard
week_end datetime scalar overridden CAST(date_trunc('week', value) + INTERVAL '6 days' AS DATE)
year datetime scalar overridden EXTRACT(YEAR FROM value)
year_add datetime scalar overridden (value + n * INTERVAL '1 year')
year_begin datetime scalar standard
year_end datetime scalar overridden CAST(date_trunc('year', value) + INTERVAL '1 year - 1 day' AS DATE)
years_between datetime scalar standard