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Date Format Functions 13033
The strftime and strptime functions can be used to convert between DATE / TIMESTAMP values and strings. This is often required when parsing CSV files, displaying output to the user or transferring information between programs. Because there ... l month name. January, February, ... %c ISO date and time representation 1992-03-02 10:30:20 %d Day of the month as a zero-padded decimal. 01, 02, ..., 31 %-d Day of the month as a decimal number. 1, 2, ..., 30 %f Microsecond as a decimal number, zero- ... padded on the left. 000000 - 999999 %g Millisecond as a decimal number, zero-padded on the left. 000 - 999 %G ISO 8601 year with century representing the year that contains the greater part of the ISO week ... (see %V ). 0001, 0002, ..., 2013, 2014, ..., 9998, 9999 %H Hour (24-hour clock) as a zero-padded decimal number. 00, 01, ..., 23 %-H Hour (24-hour clock) as a decimal number. 0, 1, ..., 23 %I Hour (12-hour clock) as a z ...
https://man.mtool.work/duckdb/2.0/sql/functions/dateformat.html
Bitstring Type 9541
Name Aliases Description BITSTRING BIT Variable-length strings of 1s and 0s Bitstrings are strings of 1s and 0s. The bit type data is of variable length. A bitstring value requires 1 byte for each group of 8 bits, plus a fixed amount to sto ... re some metadata. By default bitstrings will not be padded with zeroes. Bitstrings can be very large, having the same size restrictions as BLOB s. Creating a Bitstring A string enco ... reating a BITSTRING with a predefined length is possible with the bitstring function. The resulting bitstring will be left-padded with zeroes. SELECT bitstring('0101011', 12) AS b; b 000000101011 Numeric values (integer and float values) can also be co ...
https://man.mtool.work/duckdb/2.0/sql/data_types/bitstring.html
Go Client 8116
The latest stable release of the DuckDB Go client bundles DuckDB 2.0.0. Its own version tag encodes that DuckDB version; see Versioning below. The DuckDB Go client, duckdb-go , is a SQL driver that conforms to Go's built-in database/sql int ... ing component. That component is the DuckDB major , minor , and patch numbers concatenated, with minor and patch each zero-padded to two digits: DuckDB 1.5.0 maps to duckdb-go v2.10500.x, and DuckDB 2.0.0 maps to v2.20000.0. The README has the full map ...
https://man.mtool.work/duckdb/2.0/clients/go/overview.html
Create Synthetic Data 8116
DuckDB lets you quickly generate synthetic datasets by combining a few building blocks: functions and clauses that generate rows , functions that generate values to fill those rows, and extensions that generate whole benchmark datasets. Thi ... nt) builds a string by repeating another, which is useful for padding values to a target length: SELECT repeat('ab', 3) AS padded; Sequences A sequence produces a monotonically increasing series of numbers. nextval('sequence_name') advances the sequenc ...
https://man.mtool.work/duckdb/2.0/guides/snippets/create_synthetic_data.html
Unnesting 8061
Unnesting is an operation that decomposes values of a composite types into its components. Values of the LIST and STRUCT type may be unnested using the unnest() function . Unnesting turns a LIST -typed value into a table column: each list-e ... in the same SELECT clause, the lists are unnested side-by-side. If one list is longer than the other, the shorter list is padded with NULL values. Empty and NULL lists both unnest to zero rows. Unnesting Structs Unnesting a struct, generating two colu ...
https://man.mtool.work/duckdb/2.0/sql/query_syntax/unnest.html
Python Client API 7914
Connection class duckdb. Appender Bases: object append_row ( self , * args ) → None Buffer one row, one value per column, each converted as an executemany parameter would be append_rows ( self , rows : object ) → None Buffer each row of an ... wer ( * args : ValueOrExpr ) → StrExpr Converts string to lower case. SQL: lower . lpad ( * args : ValueOrExpr ) → StrExpr Padded on the left with the character, to a total length. Arguments: count, character. SQL: lpad . ltrim ( * args : ValueOrExpr ) ... ts the right-most count grapheme clusters. Arguments: count. SQL: right_grapheme . rpad ( * args : ValueOrExpr ) → StrExpr Padded on the right with the character, to a total length. Arguments: count, character. SQL: rpad . rtrim ( * args : ValueOrExpr ...
https://man.mtool.work/duckdb/2.0/clients/python/reference/
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