database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-01-26 09:41:40 +03:00
Code Activity

Support multi-line headers in COPY FROM command.

Browse Source 
The COPY FROM command now accepts a non-negative integer for the HEADER option,
allowing multiple header lines to be skipped. This is useful when the input
contains multi-line headers that should be ignored during data import.

Author: Shinya Kato <shinya11.kato@gmail.com>
Co-authored-by: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Yugo Nagata <nagata@sraoss.co.jp>
Discussion: https://postgr.es/m/CAOzEurRPxfzbxqeOPF_AGnAUOYf=Wk0we+1LQomPNUNtyZGBZw@mail.gmail.com
This commit is contained in:
Fujii Masao
2025-07-03 15:27:26 +09:00
parent fd7d7b7191
commit bc2f348e87
10 changed files with 138 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/include/commands/copy.h
View File

@@ -20,15 +20,12 @@
#include "tcop/dest.h"
/*
* Represents whether a header line should be present, and whether it must
* match the actual names (which implies "true").
* Represents whether a header line must match the actual names
* (which implies "true"), and whether it should be present.
*/
typedef enum CopyHeaderChoice
{
COPY_HEADER_FALSE = 0,
COPY_HEADER_TRUE,
COPY_HEADER_MATCH,
} CopyHeaderChoice;
#define COPY_HEADER_MATCH -1
#define COPY_HEADER_FALSE 0
#define COPY_HEADER_TRUE 1
/*
* Represents where to save input processing errors. More values to be added
@@ -64,7 +61,8 @@ typedef struct CopyFormatOptions
bool binary; /* binary format? */
bool freeze; /* freeze rows on loading? */
bool csv_mode; /* Comma Separated Value format? */
CopyHeaderChoice header_line; /* header line? */
int header_line; /* number of lines to skip or COPY_HEADER_XXX
* value (see the above) */
char *null_print; /* NULL marker string (server encoding!) */
int null_print_len; /* length of same */
char *null_print_client; /* same converted to file encoding */