SnowConvert AI - Redshift - Built-in functions¶

Nota

For more information about built-in functions and their Snowflake equivalents, also see Common built-in functions.

Funções de agregação¶

Aggregate functions compute a single result value from a set of input values. (Redshift SQL Language Reference Aggregate Functions).

Redshift	Snowflake
ANY_VALUE ( [ DISTINCT	ALL ] expression )
AVG ( [ DISTINCT \| ALL ] expression )	AVG ( [ DISTINCT ] expression) Notes: Redshift and Snowflake may show different precision/decimals due to data type rounding/formatting.
COUNT	COUNT
LISTAGG	LISTAGG Notes: Redshift’s DISTINCT ignores trailing spaces (“a “ = “a”); Snowflake’s does not. (See SSC-FDM-PG0013).
MAX	MAX
MEDIAN	MEDIAN Notes: Snowflake does not allow the use of date types, while Redshift does. (See SSC-FDM-PG0013).
MIN	MIN
PERCENTILE_CONT	PERCENTILE_CONT
STDDEV/STDDEV_SAMP ( [ DISTINCT	ALL ] expression) STDDEV_POP ( [ DISTINCT
SUM	SUM
VARIANCE/VAR_SAMP ( [ DISTINCT	ALL ] expression) VAR_POP ( [ DISTINCT

Array Functions¶

Creates an array of the SUPER data type. (Redshift SQL Language Reference Array Functions).

Redshift	Snowflake
ARRAY ( [ expr1 ] [ , expr2 [ , … ] ] )	ARRAY_CONSTRUCT ( [ <expr1> ] [ , <expr2> [ , … ] ] )
ARRAY_CONCAT ( super_expr1, super_expr2 )	ARRAY_CAT ( <array1> , <array2> )
ARRAY_FLATTEN ( super_expr1,super_expr2,.. )	ARRAY_FLATTEN ( <array> ) Notes: the results may vary between platforms (See SSC-FDM-PG0013).
GET_ARRAY_LENGTH ( super_expr )	ARRAY_SIZE ( <array> \| <variant>)
SPLIT_TO_ARRAY ( string,delimiter )	SPLIT (<string>, <separator>) Notes: Redshift allows missing delimiters; Snowflake requires them, defaulting to comma
SUBARRAY ( super_expr, start_position, length )	ARRAY_SLICE ( <array> , <from> , <to> ) Notes: Function names and the second argument differ; adjust arguments for equivalence.

Conditional expressions¶

Redshift	Snowflake
DECODE	DECODE Notes: the results may vary between platforms (See SSC-FDM-PG0013).
COALESCE ( expression, expression, … )	COALESCE ( expression, expression, … )
GREATEST ( value [, …] )	GREATEST_IGNORE_NULLS ( <expr1> [, <expr2> … ] )
LEAST ( value [, …] )	LEAST_IGNORE_NULLS ( <expr1> [, <expr2> … ])
NVL( expression, expression, … )	NVL ( expression, expression ) Notes: Redshift’s NVL accepts multiple arguments; Snowflake’s NVL accepts only two. To match Redshift behavior, NVL with more than two arguments is converted to COALESCE.
NVL2	NVL2
NULLIF	NULLIF Notes: Redshift’s NULLIF ignores trailing spaces in some string comparisons, unlike Snowflake. Therefore, the transformation adds RTRIM for equivalence.

Data type formatting functions¶

Data type formatting functions provide an easy way to convert values from one data type to another. For each of these functions, the first argument is always the value to be formatted and the second argument contains the template for the new format. (Redshift SQL Language Reference Data type formatting functions).

Redshift	Snowflake
TO_CHAR	TO_CHAR Notes: Snowflake’s support for this function is partial (see SSC-EWI-0006).
TO_DATE	TO_DATE Notes: Snowflake’s `TO_DATE` fails on invalid dates like “20010631” (June has 30 days), unlike Redshift’s lenient `TO_DATE`. Use `TRY_TO_DATE` in Snowflake to handle these cases by returning NULL. (see SSC-FDM-RS0004, SSC-EWI-0006, SSC-FDM-0032).

Redshift

Snowflake

TO_CHAR

Notes: Snowflake’s support for this function is partial (see SSC-EWI-0006).

TO_DATE

Notes: Snowflake’s TO_DATE fails on invalid dates like “20010631” (June has 30 days), unlike Redshift’s lenient TO_DATE. Use TRY_TO_DATE in Snowflake to handle these cases by returning NULL. (see SSC-FDM-RS0004, SSC-EWI-0006, SSC-FDM-0032).

Date and time functions¶

Redshift	Snowflake
ADD_MONTHS	ADD_MONTHS Notes: the results may vary between platforms (See SSC-FDM-PG0013).
AT TIME ZONE “timezone”	CONVERT_TIMEZONE ( <source_tz> , <target_tz> , <source_timestamp_ntz> ) CONVERT_TIMEZONE ( <target_tz> , <source_timestamp> ) Notes: Redshift defaults to UTC; the Snowflake function requires explicit UTC specification. Therefore, it will be added as the target timezone.
CONVERT_TIMEZONE	CONVERT_TIMEZONE
CURRENT_DATE	CURRENT_DATE()
DATE	DATE
DATEADD/DATE_ADD ( datepart, interval, {date \| time \| timetz \| timestamp} )	DATE_ADD ( <date_or_time_part>, <value>, <date_or_time_expr> ) Notes: Invalid date part formats are translated to Snowflake-compatible formats.
DATEDIFF/DATE_DIFF	DATEDIFF Notes: Invalid date part formats are translated to Snowflake-compatible formats.
DATE_PART/PGDATE_PART	DATE_PART Notes: this function is partially supported by Snowflake. (See SSC-EWI-OOO6).
DATE_PART_YEAR (date)	YEAR ( <date_or_timestamp_expr> ) Notes: the results may vary between platforms (See SSC-FDM-PG0013).
DATE_TRUNC	DATE_TRUNC Notes: Invalid date part formats are translated to Snowflake-compatible formats.
GETDATE()	GETDATE()
LAST_DAY	LAST_DAY Notes: the results may vary between platforms (See SSC-FDM-PG0013).
NEXT_DAY	NEXT_DAY Notes: the results may vary between platforms (See SSC-FDM-PG0013).
SYSDATE	SYSDATE()
TIMESTAMP	TO_TIMESTAMP
TRUNC	TRUNC
EXTRACT	EXTRACT Notes: Part-time or Date time supported: DAY, DOW, DOY, EPOCH, HOUR, MINUTE, MONTH, QUARTER, SECOND, WEEK, YEAR.

Nota

Redshift timestamps default to microsecond precision (6 digits); Snowflake defaults to nanosecond precision (9 digits). Adjust precision as needed using ALTER SESSION (e.g., ALTER SESSION SET TIMESTAMP_OUTPUT_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF2';). Precision loss may occur depending on the data type used.

Since some formats are incompatible with Snowflake, adjusting the account parameters DATE_INPUT_FORMAT or TIME_INPUT_FORMAT might maintain functional equivalence between platforms.

Funções de hash¶

A hash function is a mathematical function that converts a numerical input value into another value. (Redshift SQL Language Reference Hash functions).

Redshift	Snowflake
FNV_HASH (value [, seed])	HASH ( <expr> [ , <expr> … ]

Redshift

Snowflake

FNV_HASH (value [, seed])

HASH ( <expr> [ , <expr> … ]

Funções JSON¶

Redshift	Snowflake
JSON_EXTRACT_PATH_TEXT	JSON_EXTRACT_PATH_TEXT Notes: Redshift treats newline, tab, and carriage return characters literally; Snowflake interprets them. A JSON literal and dot-separated path are required to access nested objects in the Snowflake function. Paths with spaces in variables must be quoted.

Redshift

Snowflake

JSON_EXTRACT_PATH_TEXT

Notes:

Redshift treats newline, tab, and carriage return characters literally; Snowflake interprets them.
A JSON literal and dot-separated path are required to access nested objects in the Snowflake function.
Paths with spaces in variables must be quoted.

Math functions¶

Redshift	Snowflake
ACOS	ACOS
ASIN	ASIN
ATAN	ATAN
ATAN2	ATAN2
CBRT	CBRT
CEIL/CEILING	CEIL
COS	COS
COT	COT
DEGREES	DEGREES
DEXP	EXP
DLOG1/LN	LN
DLOG10 (number)	LOG (10, number)
EXP	EXP
FLOOR	FLOOR
LOG	LOG
MOD	MOD
PI	PI
POWER/POW	POWER/POW
RADIANS	RADIANS
RANDOM	RANDOM
ROUND	ROUND
SIN	SIN
SIGN	SIGN
SQRT	SQRT
TAN	TAN
TRUNC	TRUNC

Nota

Redshift and Snowflake results may differ in scale.

String functions¶

String functions process and manipulate character strings or expressions that evaluate to character strings. (Redshift SQL Language Reference String functions).

Redshift	Snowflake
ASCII	ASCII
BTRIM	TRIM
CHAR_LENGTH	LENGTH
CHARACTER_LENGTH	LENGTH
CHARINDEX	CHARINDEX
CHR	CHR
CONCAT	CONCAT
INITCAP	INITCAP
LEFT/RIGHT	LEFT/RIGHT Notes: For negative lengths in `LEFT`/`RIGHT`, Snowflake returns an empty string; Redshift raises an error.
LEN	LEN
LOWER	LOWER
OCTET_LENGTH	OCTET_LENGTH Notes: the results may vary between platforms (See SSC-FDM-PG0013).
QUOTE_IDENT (string)	CONCAT (“»”, string, “»”)
REGEXP_REPLACE	REGEXP_REPLACE Notes: This function includes a `parameters` argument that enables the user to interpret the pattern using the Perl Compatible Regular Expression (PCRE) dialect, represented by the `p` value, this is removed to avoid any issues. (See SSC-EWI-0009, SC-FDM-0032, SSC-FDM- PG0011).
REPEAT	REPEAT
REPLACE	REPLACE
REPLICATE	REPEAT
REVERSE	REVERSE
SOUNDEX	SOUNDEX Notes: Certain special characters, the results may vary between platforms (See SSC-FDM-PG0013).
SPLIT_PART	SPLIT_PART Notes: Snowflake and Redshift handle SPLIT_PART differently with case-insensitive collations.
STRPOS (string, substring )	POSITION ( <expr1> IN <expr> )
SUBSTRING	SUBSTRING Notes: Snowflake partially supports this function. Redshift’s `SUBSTRING`, with a non-positive `start_position`, calculates `start_position + number_characters` (returning “” if the result is non-positive). Snowflake’s behavior differs. (See SSC-EWI-RS0006).
TEXTLEN	LENGTH
TRANSLATE	TRANSLATE
TRIM	TRIM Notes: Redshift uses keywords (BOTH, LEADING, TRAILING) for trim; Snowflake uses TRIM, LTRIM, RTRIM.
UPPER	UPPER

SUPER type information functions¶

Redshift	Snowflake
IS_ARRAY	IS_ARRAY Notes: the results may vary between platforms (See SSC-FDM-PG0013).
IS_BOOLEAN	IS_BOOLEAN Notes: the results may vary between platforms (See SSC-FDM-PG0013).

Redshift

Snowflake

IS_ARRAY

Notes: the results may vary between platforms (See SSC-FDM-PG0013).

IS_BOOLEAN

Notes: the results may vary between platforms (See SSC-FDM-PG0013).

Window functions¶

Redshift	Snowflake
AVG	AVG Notes: AVG rounding/formatting can vary by data type between Redshift and Snowflake.
COUNT	COUNT
DENSE_RANK	DENSE_RANK Notes: ORDER BY is mandatory in Snowflake; missing clauses are replaced with `ORDER BY 1`.
FIRST_VALUE	FIRST_VALUE Notes: Snowflake needs ORDER BY; missing clauses get `ORDER BY <expr>.`
LAG	LAG
LAST_VALUE	LAST_VALUE Notes: Snowflake needs ORDER BY; missing clauses get `ORDER BY <expr>`.
LEAD	LEAD Notes: Redshift allows constant or expression offsets; Snowflake allows only constant offsets.
LISTAGG	LISTAGG Notes: Redshift’s DISTINCT ignores trailing spaces (“a “ = “a”); Snowflake’s does not. (See SSC-FDM-PG0013).
MEDIAN	MEDIAN Notes: Snowflake does not allow the use of date types, while Redshift does. (See SSC-FDM-PG0013).
NTH_VALUE	NTH_VALUE Notes: ORDER BY is mandatory in Snowflake; missing clauses are replaced with `ORDER BY 1`.
NTILE	NTILE Notes: ORDER BY is mandatory in Snowflake; missing clauses are replaced with `ORDER BY 1`. (See SSC-FDM-PG0013).
PERCENT_RANK	PERCENT_RANK Notes: ORDER BY is mandatory in Snowflake; missing clauses are replaced with `ORDER BY 1`.
PERCENTILE_CONT	PERCENTILE_CONT Notes: Rounding varies between platforms.
PERCENTILE_DISC	PERCENTILE_DISC
RANK	RANK
RATIO_TO_REPORT	RATIO_TO_REPORT Notes: the results may vary between platforms (See SSC-FDM-PG0013).
ROW_NUMBER	ROW_NUMBER Notes: ORDER BY is mandatory in Snowflake; missing clauses are replaced with `ORDER BY 1`.
STDDEV_SAMP	STDDEV
VAR_SAMP	VARIANCE

Problemas conhecidos ¶

For more information about quoted identifiers in functions, click here.

IDENTITY¶

Descrição ¶

A função IDENTITY é uma função do sistema que opera em uma coluna específica de uma tabela para determinar o valor inicial da identidade. Se o valor inicial não estiver disponível, o padrão será o valor fornecido na função. Isso será convertido em uma Sequência no Snowflake.

Sintaxe da gramática ¶

 "identity"(oid_id, oid_table_id, default)

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Nota

Essa função não é mais compatível com o Redshift. Ela usa o valor padrão para definir a identidade e se comporta como uma coluna de identidade padrão.

Amostra de padrões da origem¶

Código de entrada:¶

Redshift¶

 CREATE TABLE IF NOT EXISTS table_test
(
    id integer,
    inventory_combo BIGINT  DEFAULT "identity"(850178, 0, '5,3'::text)
);

INSERT INTO table_test (id) VALUES
    (1),
    (2),
    (3),
    (4);

SELECT * FROM table_test;

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Results¶

id	inventory_combo
1	5
2	8
3	11
3	14

Código de saída:

Snowflake¶

 CREATE TABLE IF NOT EXISTS table_test
(
    id integer,
    inventory_combo BIGINT IDENTITY(5,3) ORDER
)
COMMENT = '{ "origin": "sf_sc", "name": "snowconvert", "version": {  "major": 0,  "minor": 0,  "patch": "0" }, "attributes": {  "component": "redshift",  "convertedOn": "11/13/2024",  "domain": "test" }}';

INSERT INTO table_test (id) VALUES
    (1),
    (2),
    (3),
    (4);

SELECT * FROM
    table_test;

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Results¶

id	inventory_combo
1	5
2	8
3	11
3	14

EWIs relacionados¶

Não há problemas conhecidos.

TO_CHAR¶

Date function

Descrição¶

TO_CHAR converte um carimbo de data/hora ou uma expressão numérica em um formato de dados de cadeia de caracteres. (Função TO_CHAR de referência da linguagem Redshift SQL)

Aviso

Essa função é parcialmente suportada no Snowflake.

Para obter mais informações sobre identificadores entre aspas em funções, clique aqui.

Sintaxe da gramática¶

 TO_CHAR(timestamp_expression | numeric_expression , 'format')

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Amostra de padrões da origem¶

Código de entrada:¶

Redshift¶

 SELECT TO_CHAR(timestamp '2009-12-31 23:15:59', 'YYYY'),
       TO_CHAR(timestamp '2009-12-31 23:15:59', 'YYY'),
       TO_CHAR(timestamp '2009-12-31 23:15:59', 'TH'),
       "to_char"(timestamp '2009-12-31 23:15:59', 'MON-DY-DD-YYYY HH12:MIPM'),
       TO_CHAR(125.8, '999.99'),
       "to_char"(125.8, '999.99');

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Results¶

TO_CHAR	TO_CHAR	TO_CHAR	TO_CHAR	TO_CHAR
2009	009	DEC-THU-31-2009 11:15PM	125,80	125,80

Código de saída:¶

Snowflake¶

 SELECT
       TO_CHAR(timestamp '2009-12-31 23:15:59', 'YYYY'),
       PUBLIC.YEAR_PART_UDF(timestamp '2009-12-31 23:15:59', 3),
       TO_CHAR(timestamp '2009-12-31 23:15:59', 'TH') !!!RESOLVE EWI!!! /*** SSC-EWI-0006 - TH FORMAT MAY FAIL OR MAY HAVE A DIFFERENT BEHAVIOR IN SNOWFLAKE. ***/!!!,
       PUBLIC.MONTH_SHORT_UDF(timestamp '2009-12-31 23:15:59', 'uppercase') || '-' || PUBLIC.DAYNAME_SHORT_UDF(timestamp '2009-12-31 23:15:59', 'uppercase') || TO_CHAR(timestamp '2009-12-31 23:15:59', '-DD-YYYY HH12:MI') || PUBLIC.MERIDIAN_INDICATORS_UDF(timestamp '2009-12-31 23:15:59', 'uppercase'),
       TO_CHAR(125.8, '999.99'),
       TO_CHAR(125.8, '999.99');

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Results¶

TO_CHAR	TO_CHAR
2009	Dec-Thu-31-2009 11:15PM

Problemas conhecidos ¶

Não foram encontrados problemas.

EWIs relacionados¶

SSC-EWI-0006: The current date/numeric format may have a different behavior in Snowflake.

Para valores de data e hora¶

Translation specification for the TO_CHAR function when transforming date or timestamp values to string

Descrição¶

As cadeias de formato a seguir se aplicam a funções como TO_CHAR. Essas cadeias de caracteres podem conter separadores de data e hora (como “-”, “/ ou “:”) e os seguintes «dateparts» e «timeparts». (Página de referência das cadeias de caracteres de formato Datetime do Redshift)

Sintaxe da gramática¶

TO_CHAR (timestamp_expression, 'format')

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A tabela a seguir especifica o mapeamento de cada elemento de formato para o Snowflake:

Redshift	Snowflake
`BC, AD, bc, ad` (indicadores de era em maiúsculas e minúsculas)	`PUBLIC.ERA_INDICATORS_UDF`
`B.C.,. A.D., b.c., a.d.` (indicadores de era maiúsculos e minúsculos com pontos)	`PUBLIC.ERA_INDICATORS_WITH_POINTS_UDF`
`CC`	`PUBLIC.CENTURY_UDF`
`YYYY` e `YY`	Com suporte direto
`YYY` e `Y`	`PUBLIC.YEAR_PART_UDF`
`Y,YYY`	`PUBLIC.YEAR_WITH_COMMA_UDF`
`IYYY`	`YEAROFWEEKISO`
`I, IY, IYY`	`PUBLIC.ISO_YEAR_PART_UDF`
`Q`	`QUARTER`
`MONTH, Month, month`	`PUBLIC.FULL_MONTH_NAME_UDF`
`MON, Mon, mon`	`PUBLIC.MONTH_SHORT_UDF`
`RM, rm`	`PUBLIC.ROMAN_NUMERALS_MONTH_UDF`
`W`	`PUBLIC.WEEK_OF_MONTH_UDF`
`WW`	`PUBLIC.WEEK_NUMBER_UDF`
`IW`	`WEEKISO`
`DAY, Day, day`	`PUBLIC.DAYNAME_LONG_UDF`
`DY, Dy, dy`	`PUBLIC.DAYNAME_SHORT_UDF`
`DDD`	`DAYOFYEAR`
`IDDD`	`PUBLIC.DAY_OF_YEAR_ISO_UDF`
`D`	`PUBLIC.DAY_OF_WEEK_UDF` Notes: For this UDF to work correctly the Snowflake session parameter `WEEK_START` should have its default value (`0`).
`ID`	`DAYOFWEEKISO`
`J`	`PUBLIC.JULIAN_DAY_UDF`
`HH24`	Com suporte direto
`HH`	`HH12`
`HH12`	Com suporte direto
`MI`	Com suporte direto
`SS`	Com suporte direto
`MS`	`FF3`
`US`	`FF6`
`AM, PM, am, pm` (indicadores de meridianos em letras maiúsculas e minúsculas)	`PUBLIC.MERIDIAN_INDICATORS_UDF`
`A.M., P.M., a.m., p.m.` (indicadores de meridianos maiúsculos e minúsculos com pontos)	`PUBLIC.MERIDIAN_INDICATORS_WITH_POINTS_UDF`
`TZ` e `tz`	`UTC` and `utc` Notes: According to the redshift documentation, all timestamp with time zone are stored in UTC, which causes this format element to return a fixed result.
`OF`	+00 Notes: According to the redshift documentation, all timestamp with time zone are stored in UTC, which causes this format element to return a fixed result.
`SSSS`	`PUBLIC.SECONDS_PAST_MIDNIGHT`
`SP`	Notes: This is a PostgreSQL template pattern modifier for «spell mode», however it does nothing on Redshift, so it is removed from the output.
`FX`	Notes: This is another template pattern modifier for «fixed format», however it has no use on the TO_CHAR function so it is removed.

Amostra de padrões da origem¶

Transformação direta de elementos de formato (sem funções/UDFs)¶

O resultado é preservado como uma única função TO_CHAR

Redshift¶

Query¶

 SELECT TO_CHAR('2013-10-03 13:50:15.456871'::TIMESTAMP, 'DD/MM/YY HH:MI:SS.MS') AS col1;

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Result¶

+----------------------+
|col1                  |
+----------------------+
|03/10/13 01:50:15.456 |
+----------------------+

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Snowflake¶

Query¶

 SELECT TO_CHAR('2013-10-03 13:50:15.456871'::TIMESTAMP, 'DD/MM/YY HH12:MI:SS.FF3') AS col1;

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Result¶

+----------------------+
|col1                  |
+----------------------+
|03/10/13 01:50:15.456 |
+----------------------+

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Transformação de formato usando funções/UDFs¶

O resultado é uma concatenação de várias funções internas TO_CHAR, UDFs e Snowflake que geram a representação de cadeia de caracteres equivalente do valor datetime

Redshift¶

Query¶

 SELECT TO_CHAR(DATE '2025-07-05', '"Today is " Month DAY DD, "it belongs to the week " IW') AS result;

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Result¶

+-------------------------------------------------------------+
|result                                                       |
+-------------------------------------------------------------+
|Today is  July      SATURDAY  05, it belongs to the week  27 |
+-------------------------------------------------------------+

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Snowflake¶

Query¶

 SELECT
    'Today is ' ||
    TO_CHAR(DATE '2025-07-05', ' ') ||
    PUBLIC.FULL_MONTH_NAME_UDF(DATE '2025-07-05', 'firstOnly') ||
    ' ' ||
    PUBLIC.DAYNAME_LONG_UDF(DATE '2025-07-05', 'uppercase') ||
    TO_CHAR(DATE '2025-07-05', ' DD, ') ||
    'it belongs to the week ' ||
    TO_CHAR(DATE '2025-07-05', ' ') ||
    WEEKISO(DATE '2025-07-05') AS result;

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Result¶

+-------------------------------------------------------------+
|result                                                       |
+-------------------------------------------------------------+
|Today is  July      SATURDAY  05, it belongs to the week  27 |
+-------------------------------------------------------------+

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Texto citado¶

Os elementos de formato no texto entre aspas duplas são adicionados à saída diretamente sem interpretá-los; as aspas duplas com escape são transformadas em seu equivalente com escape no Snowflake.

Redshift¶

Query¶

 SELECT
    TO_CHAR(DATE '2025-01-16', 'MM "TESTING DD" DD') AS result1,
    TO_CHAR(DATE '2025-01-16', 'MM TESTING \\"DD\\" DD') AS result2,
    TO_CHAR(DATE '2025-01-16', 'MM "TESTING \\"DD\\"" DD') AS result3;

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Result¶

+-----------------+-------------------+-------------------+
|result1          |result2            |result3            |
+-----------------+-------------------+-------------------+
|01 TESTING DD 16 |01 TEST5NG "16" 16 |01 TESTING "DD" 16 |
+-----------------+-------------------+-------------------+

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Snowflake¶

Query¶

 SELECT
    TO_CHAR(DATE '2025-01-16', 'MM ') || 'TESTING DD' || TO_CHAR(DATE '2025-01-16', ' DD') AS result1,
    TO_CHAR(DATE '2025-01-16', 'MM TEST') || PUBLIC.ISO_YEAR_PART_UDF(DATE '2025-01-16', 1) || TO_CHAR(DATE '2025-01-16', 'NG ""DD"" DD') AS result2,
    TO_CHAR(DATE '2025-01-16', 'MM ') || 'TESTING "DD"' || TO_CHAR(DATE '2025-01-16', ' DD') AS result3;

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Result¶

+-----------------+-------------------+-------------------+
|result1          |result2            |result3            |
+-----------------+-------------------+-------------------+
|01 TESTING DD 16 |01 TEST5NG "16" 16 |01 TESTING "DD" 16 |
+-----------------+-------------------+-------------------+

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Problemas conhecidos¶

Modificadores de padrão de modelo não suportados¶

Os seguintes modificadores de modelo de formato:

FM (modo de preenchimento)
TH e th (sufixo de número ordinal em maiúsculas e minúsculas)
TM (modo de conversão)

Are not supported, including them in a format will generate SSC-EWI-0006

Código de entrada:

 SELECT TO_CHAR(CURRENT_DATE, 'FMMonth'),
TO_CHAR(CURRENT_DATE, 'DDTH'),
TO_CHAR(CURRENT_DATE, 'DDth'),
TO_CHAR(CURRENT_DATE, 'TMMonth');

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Código de saída:

 SELECT
TO_CHAR(CURRENT_DATE(), 'FM') || PUBLIC.FULL_MONTH_NAME_UDF(CURRENT_DATE(), 'firstOnly') !!!RESOLVE EWI!!! /*** SSC-EWI-0006 - FMMonth FORMAT MAY FAIL OR MAY HAVE A DIFFERENT BEHAVIOR IN SNOWFLAKE. ***/!!!,
TO_CHAR(CURRENT_DATE(), 'DDTH') !!!RESOLVE EWI!!! /*** SSC-EWI-0006 - DDTH FORMAT MAY FAIL OR MAY HAVE A DIFFERENT BEHAVIOR IN SNOWFLAKE. ***/!!!,
TO_CHAR(CURRENT_DATE(), 'DDth') !!!RESOLVE EWI!!! /*** SSC-EWI-0006 - DDth FORMAT MAY FAIL OR MAY HAVE A DIFFERENT BEHAVIOR IN SNOWFLAKE. ***/!!!,
TO_CHAR(CURRENT_DATE(), 'TM') || PUBLIC.FULL_MONTH_NAME_UDF(CURRENT_DATE(), 'firstOnly') !!!RESOLVE EWI!!! /*** SSC-EWI-0006 - TMMonth FORMAT MAY FAIL OR MAY HAVE A DIFFERENT BEHAVIOR IN SNOWFLAKE. ***/!!!;

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Parâmetro de formato passado pela variável

Quando o parâmetro de formato é passado como uma variável em vez de um literal de cadeia de caracteres, a transformação de elementos de formato não pode ser aplicada; um FDM será adicionado aos usos da função alertando sobre isso.

Código de entrada:

 SELECT TO_CHAR(d, 'YYYY/MM/DD'),
TO_CHAR(d, f)
FROM (SELECT TO_DATE('2001-01-01','YYYY-MM-DD') as d, 'DD/MM/YYYY' as f);

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Código de saída:

 SELECT TO_CHAR(d, 'YYYY/MM/DD'),
--** SSC-FDM-0032 - PARAMETER 'format_string' IS NOT A LITERAL VALUE, TRANSFORMATION COULD NOT BE FULLY APPLIED **
TO_CHAR(d, f)
FROM (SELECT TO_DATE('2001-01-01','YYYY-MM-DD') as d, 'DD/MM/YYYY' as f);

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EWIs relacionados¶

SSC-EWI-0006: The current date/numeric format may have a different behavior in Snowflake.
SSC-FDM-0032: O parâmetro não é um valor literal, a transformação não pôde ser totalmente aplicada