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sql_load.cc
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sql_load.cc
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/*
Copyright (c) 2000, 2016, Oracle and/or its affiliates.
Copyright (c) 2010, 2016, MariaDB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* Copy data from a textfile to table */
/* 2006-12 Erik Wetterberg : LOAD XML added */
#include <my_global.h>
#include "sql_priv.h"
#include "unireg.h"
#include "sql_load.h"
#include "sql_load.h"
#include "sql_cache.h" // query_cache_*
#include "sql_base.h" // fill_record_n_invoke_before_triggers
#include <my_dir.h>
#include "sql_view.h" // check_key_in_view
#include "sql_insert.h" // check_that_all_fields_are_given_values,
// write_record
#include "sql_acl.h" // INSERT_ACL, UPDATE_ACL
#include "log_event.h" // Delete_file_log_event,
// Execute_load_query_log_event,
// LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F
#include <m_ctype.h>
#include "rpl_mi.h"
#include "sql_repl.h"
#include "sp_head.h"
#include "sql_trigger.h"
#include "sql_derived.h"
#include "sql_show.h"
extern "C" int _my_b_net_read(IO_CACHE *info, uchar *Buffer, size_t Count);
class XML_TAG {
public:
int level;
String field;
String value;
XML_TAG(int l, String f, String v);
};
XML_TAG::XML_TAG(int l, String f, String v)
{
level= l;
field.append(f);
value.append(v);
}
/*
Field and line terminators must be interpreted as sequence of unsigned char.
Otherwise, non-ascii terminators will be negative on some platforms,
and positive on others (depending on the implementation of char).
*/
class Term_string
{
const uchar *m_ptr;
uint m_length;
int m_initial_byte;
public:
Term_string(const String &str) :
m_ptr(static_cast<const uchar*>(static_cast<const void*>(str.ptr()))),
m_length(str.length()),
m_initial_byte((uchar) (str.length() ? str.ptr()[0] : INT_MAX))
{ }
void set(const uchar *str, uint length, int initial_byte)
{
m_ptr= str;
m_length= length;
m_initial_byte= initial_byte;
}
void reset() { set(NULL, 0, INT_MAX); }
const uchar *ptr() const { return m_ptr; }
uint length() const { return m_length; }
int initial_byte() const { return m_initial_byte; }
bool eq(const Term_string &other) const
{
return length() == other.length() && !memcmp(ptr(), other.ptr(), length());
}
};
#define GET (stack_pos != stack ? *--stack_pos : my_b_get(&cache))
#define PUSH(A) *(stack_pos++)=(A)
class READ_INFO {
File file;
String data; /* Read buffer */
uint fixed_length; /* Length of the fixed length record */
uint max_length; /* Max length of row */
Term_string m_field_term; /* FIELDS TERMINATED BY 'string' */
Term_string m_line_term; /* LINES TERMINATED BY 'string' */
Term_string m_line_start; /* LINES STARTING BY 'string' */
int enclosed_char,escape_char;
int *stack,*stack_pos;
bool found_end_of_line,start_of_line,eof;
NET *io_net;
int level; /* for load xml */
bool getbyte(char *to)
{
int chr= GET;
if (chr == my_b_EOF)
return (eof= true);
*to= chr;
return false;
}
/**
Read a tail of a multi-byte character.
The first byte of the character is assumed to be already
read from the file and appended to "str".
@returns true - if EOF happened unexpectedly
@returns false - no EOF happened: found a good multi-byte character,
or a bad byte sequence
Note:
The return value depends only on EOF:
- read_mbtail() returns "false" is a good character was read, but also
- read_mbtail() returns "false" if an incomplete byte sequence was found
and no EOF happened.
For example, suppose we have an ujis file with bytes 0x8FA10A, where:
- 0x8FA1 is an incomplete prefix of a 3-byte character
(it should be [8F][A1-FE][A1-FE] to make a full 3-byte character)
- 0x0A is a line demiliter
This file has some broken data, the trailing [A1-FE] is missing.
In this example it works as follows:
- 0x8F is read from the file and put into "data" before the call
for read_mbtail()
- 0xA1 is read from the file and put into "data" by read_mbtail()
- 0x0A is kept in the read queue, so the next read iteration after
the current read_mbtail() call will normally find it and recognize as
a line delimiter
- the current call for read_mbtail() returns "false",
because no EOF happened
*/
bool read_mbtail(String *str)
{
int chlen;
if ((chlen= my_charlen(read_charset, str->end() - 1, str->end())) == 1)
return false; // Single byte character found
for (uint32 length0= str->length() - 1 ; MY_CS_IS_TOOSMALL(chlen); )
{
int chr= GET;
if (chr == my_b_EOF)
{
DBUG_PRINT("info", ("read_mbtail: chlen=%d; unexpected EOF", chlen));
return true; // EOF
}
str->append(chr);
chlen= my_charlen(read_charset, str->ptr() + length0, str->end());
if (chlen == MY_CS_ILSEQ)
{
/**
It has been an incomplete (but a valid) sequence so far,
but the last byte turned it into a bad byte sequence.
Unget the very last byte.
*/
str->length(str->length() - 1);
PUSH(chr);
DBUG_PRINT("info", ("read_mbtail: ILSEQ"));
return false; // Bad byte sequence
}
}
DBUG_PRINT("info", ("read_mbtail: chlen=%d", chlen));
return false; // Good multi-byte character
}
public:
bool error,line_cuted,found_null,enclosed;
uchar *row_start, /* Found row starts here */
*row_end; /* Found row ends here */
CHARSET_INFO *read_charset;
LOAD_FILE_IO_CACHE cache;
READ_INFO(THD *thd, File file, uint tot_length, CHARSET_INFO *cs,
String &field_term,String &line_start,String &line_term,
String &enclosed,int escape,bool get_it_from_net, bool is_fifo);
~READ_INFO();
int read_field();
int read_fixed_length(void);
int next_line(void);
char unescape(char chr);
bool terminator(const uchar *ptr, uint length);
bool terminator(const Term_string &str)
{ return terminator(str.ptr(), str.length()); }
bool terminator(int chr, const Term_string &str)
{ return str.initial_byte() == chr && terminator(str); }
bool find_start_of_fields();
/* load xml */
List<XML_TAG> taglist;
int read_value(int delim, String *val);
int read_xml(THD *thd);
int clear_level(int level);
my_off_t file_length() { return cache.end_of_file; }
my_off_t position() { return my_b_tell(&cache); }
/**
skip all data till the eof.
*/
void skip_data_till_eof()
{
while (GET != my_b_EOF)
;
}
};
static int read_fixed_length(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
List<Item> &fields_vars, List<Item> &set_fields,
List<Item> &set_values, READ_INFO &read_info,
ulong skip_lines,
bool ignore_check_option_errors);
static int read_sep_field(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
List<Item> &fields_vars, List<Item> &set_fields,
List<Item> &set_values, READ_INFO &read_info,
String &enclosed, ulong skip_lines,
bool ignore_check_option_errors);
static int read_xml_field(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
List<Item> &fields_vars, List<Item> &set_fields,
List<Item> &set_values, READ_INFO &read_info,
String &enclosed, ulong skip_lines,
bool ignore_check_option_errors);
#ifndef EMBEDDED_LIBRARY
static bool write_execute_load_query_log_event(THD *, sql_exchange*, const
char*, const char*, bool, enum enum_duplicates, bool, bool, int);
#endif /* EMBEDDED_LIBRARY */
/*
Execute LOAD DATA query
SYNOPSYS
mysql_load()
thd - current thread
ex - sql_exchange object representing source file and its parsing rules
table_list - list of tables to which we are loading data
fields_vars - list of fields and variables to which we read
data from file
set_fields - list of fields mentioned in set clause
set_values - expressions to assign to fields in previous list
handle_duplicates - indicates whenever we should emit error or
replace row if we will meet duplicates.
ignore - - indicates whenever we should ignore duplicates
read_file_from_client - is this LOAD DATA LOCAL ?
RETURN VALUES
TRUE - error / FALSE - success
*/
int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
List<Item> &fields_vars, List<Item> &set_fields,
List<Item> &set_values,
enum enum_duplicates handle_duplicates, bool ignore,
bool read_file_from_client)
{
char name[FN_REFLEN];
File file;
TABLE *table= NULL;
int error= 0;
String *field_term=ex->field_term,*escaped=ex->escaped;
String *enclosed=ex->enclosed;
bool is_fifo=0;
#ifndef EMBEDDED_LIBRARY
killed_state killed_status;
bool is_concurrent;
#endif
char *db = table_list->db; // This is never null
/*
If path for file is not defined, we will use the current database.
If this is not set, we will use the directory where the table to be
loaded is located
*/
char *tdb= thd->db ? thd->db : db; // Result is never null
ulong skip_lines= ex->skip_lines;
bool transactional_table __attribute__((unused));
DBUG_ENTER("mysql_load");
/*
Bug #34283
mysqlbinlog leaves tmpfile after termination if binlog contains
load data infile, so in mixed mode we go to row-based for
avoiding the problem.
*/
thd->set_current_stmt_binlog_format_row_if_mixed();
#ifdef EMBEDDED_LIBRARY
read_file_from_client = 0; //server is always in the same process
#endif
if (escaped->length() > 1 || enclosed->length() > 1)
{
my_message(ER_WRONG_FIELD_TERMINATORS,
ER_THD(thd, ER_WRONG_FIELD_TERMINATORS),
MYF(0));
DBUG_RETURN(TRUE);
}
/* Report problems with non-ascii separators */
if (!escaped->is_ascii() || !enclosed->is_ascii() ||
!field_term->is_ascii() ||
!ex->line_term->is_ascii() || !ex->line_start->is_ascii())
{
push_warning(thd, Sql_condition::WARN_LEVEL_WARN,
WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED,
ER_THD(thd, WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED));
}
if (open_and_lock_tables(thd, table_list, TRUE, 0))
DBUG_RETURN(TRUE);
if (mysql_handle_single_derived(thd->lex, table_list, DT_MERGE_FOR_INSERT) ||
mysql_handle_single_derived(thd->lex, table_list, DT_PREPARE))
DBUG_RETURN(TRUE);
if (setup_tables_and_check_access(thd, &thd->lex->select_lex.context,
&thd->lex->select_lex.top_join_list,
table_list,
thd->lex->select_lex.leaf_tables, FALSE,
INSERT_ACL | UPDATE_ACL,
INSERT_ACL | UPDATE_ACL, FALSE))
DBUG_RETURN(-1);
if (!table_list->table || // do not suport join view
!table_list->single_table_updatable() || // and derived tables
check_key_in_view(thd, table_list))
{
my_error(ER_NON_UPDATABLE_TABLE, MYF(0), table_list->alias, "LOAD");
DBUG_RETURN(TRUE);
}
if (table_list->prepare_where(thd, 0, TRUE) ||
table_list->prepare_check_option(thd))
{
DBUG_RETURN(TRUE);
}
thd_proc_info(thd, "executing");
/*
Let us emit an error if we are loading data to table which is used
in subselect in SET clause like we do it for INSERT.
The main thing to fix to remove this restriction is to ensure that the
table is marked to be 'used for insert' in which case we should never
mark this table as 'const table' (ie, one that has only one row).
*/
if (unique_table(thd, table_list, table_list->next_global, 0))
{
my_error(ER_UPDATE_TABLE_USED, MYF(0), table_list->table_name,
"LOAD DATA");
DBUG_RETURN(TRUE);
}
table= table_list->table;
transactional_table= table->file->has_transactions();
#ifndef EMBEDDED_LIBRARY
is_concurrent= (table_list->lock_type == TL_WRITE_CONCURRENT_INSERT);
#endif
if (!fields_vars.elements)
{
Field_iterator_table_ref field_iterator;
field_iterator.set(table_list);
for (; !field_iterator.end_of_fields(); field_iterator.next())
{
Item *item;
if (!(item= field_iterator.create_item(thd)))
DBUG_RETURN(TRUE);
fields_vars.push_back(item->real_item(), thd->mem_root);
}
bitmap_set_all(table->write_set);
/*
Let us also prepare SET clause, altough it is probably empty
in this case.
*/
if (setup_fields(thd, Ref_ptr_array(),
set_fields, MARK_COLUMNS_WRITE, 0, 0) ||
setup_fields(thd, Ref_ptr_array(), set_values, MARK_COLUMNS_READ, 0, 0))
DBUG_RETURN(TRUE);
}
else
{ // Part field list
/* TODO: use this conds for 'WITH CHECK OPTIONS' */
if (setup_fields(thd, Ref_ptr_array(),
fields_vars, MARK_COLUMNS_WRITE, 0, 0) ||
setup_fields(thd, Ref_ptr_array(),
set_fields, MARK_COLUMNS_WRITE, 0, 0) ||
check_that_all_fields_are_given_values(thd, table, table_list))
DBUG_RETURN(TRUE);
/* Fix the expressions in SET clause */
if (setup_fields(thd, Ref_ptr_array(), set_values, MARK_COLUMNS_READ, 0, 0))
DBUG_RETURN(TRUE);
}
switch_to_nullable_trigger_fields(fields_vars, table);
switch_to_nullable_trigger_fields(set_fields, table);
switch_to_nullable_trigger_fields(set_values, table);
table->prepare_triggers_for_insert_stmt_or_event();
table->mark_columns_needed_for_insert();
uint tot_length=0;
bool use_blobs= 0, use_vars= 0;
List_iterator_fast<Item> it(fields_vars);
Item *item;
while ((item= it++))
{
Item *real_item= item->real_item();
if (real_item->type() == Item::FIELD_ITEM)
{
Field *field= ((Item_field*)real_item)->field;
if (field->flags & BLOB_FLAG)
{
use_blobs= 1;
tot_length+= 256; // Will be extended if needed
}
else
tot_length+= field->field_length;
}
else if (item->type() == Item::STRING_ITEM)
use_vars= 1;
}
if (use_blobs && !ex->line_term->length() && !field_term->length())
{
my_message(ER_BLOBS_AND_NO_TERMINATED,
ER_THD(thd, ER_BLOBS_AND_NO_TERMINATED),
MYF(0));
DBUG_RETURN(TRUE);
}
if (use_vars && !field_term->length() && !enclosed->length())
{
my_error(ER_LOAD_FROM_FIXED_SIZE_ROWS_TO_VAR, MYF(0));
DBUG_RETURN(TRUE);
}
/* We can't give an error in the middle when using LOCAL files */
if (read_file_from_client && handle_duplicates == DUP_ERROR)
ignore= 1;
#ifndef EMBEDDED_LIBRARY
if (read_file_from_client)
{
(void)net_request_file(&thd->net,ex->file_name);
file = -1;
}
else
#endif
{
#ifdef DONT_ALLOW_FULL_LOAD_DATA_PATHS
ex->file_name+=dirname_length(ex->file_name);
#endif
if (!dirname_length(ex->file_name))
{
strxnmov(name, FN_REFLEN-1, mysql_real_data_home, tdb, NullS);
(void) fn_format(name, ex->file_name, name, "",
MY_RELATIVE_PATH | MY_UNPACK_FILENAME);
}
else
{
(void) fn_format(name, ex->file_name, mysql_real_data_home, "",
MY_RELATIVE_PATH | MY_UNPACK_FILENAME |
MY_RETURN_REAL_PATH);
}
if (thd->rgi_slave)
{
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
if (strncmp(thd->rgi_slave->rli->slave_patternload_file, name,
thd->rgi_slave->rli->slave_patternload_file_size))
{
/*
LOAD DATA INFILE in the slave SQL Thread can only read from
--slave-load-tmpdir". This should never happen. Please, report a bug.
*/
sql_print_error("LOAD DATA INFILE in the slave SQL Thread can only read from --slave-load-tmpdir. " \
"Please, report a bug.");
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--slave-load-tmpdir");
DBUG_RETURN(TRUE);
}
#else
/*
This is impossible and should never happen.
*/
DBUG_ASSERT(FALSE);
#endif
}
else if (!is_secure_file_path(name))
{
/* Read only allowed from within dir specified by secure_file_priv */
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--secure-file-priv");
DBUG_RETURN(TRUE);
}
#if !defined(__WIN__) && ! defined(__NETWARE__)
MY_STAT stat_info;
if (!my_stat(name, &stat_info, MYF(MY_WME)))
DBUG_RETURN(TRUE);
// if we are not in slave thread, the file must be:
if (!thd->slave_thread &&
!((stat_info.st_mode & S_IFLNK) != S_IFLNK && // symlink
((stat_info.st_mode & S_IFREG) == S_IFREG || // regular file
(stat_info.st_mode & S_IFIFO) == S_IFIFO))) // named pipe
{
my_error(ER_TEXTFILE_NOT_READABLE, MYF(0), name);
DBUG_RETURN(TRUE);
}
if ((stat_info.st_mode & S_IFIFO) == S_IFIFO)
is_fifo= 1;
#endif
if ((file= mysql_file_open(key_file_load,
name, O_RDONLY, MYF(MY_WME))) < 0)
DBUG_RETURN(TRUE);
}
COPY_INFO info;
bzero((char*) &info,sizeof(info));
info.ignore= ignore;
info.handle_duplicates=handle_duplicates;
info.escape_char= (escaped->length() && (ex->escaped_given() ||
!(thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES)))
? (*escaped)[0] : INT_MAX;
READ_INFO read_info(thd, file, tot_length,
ex->cs ? ex->cs : thd->variables.collation_database,
*field_term,*ex->line_start, *ex->line_term, *enclosed,
info.escape_char, read_file_from_client, is_fifo);
if (read_info.error)
{
if (file >= 0)
mysql_file_close(file, MYF(0)); // no files in net reading
DBUG_RETURN(TRUE); // Can't allocate buffers
}
#ifndef EMBEDDED_LIBRARY
if (mysql_bin_log.is_open())
{
read_info.cache.thd = thd;
read_info.cache.wrote_create_file = 0;
read_info.cache.last_pos_in_file = HA_POS_ERROR;
read_info.cache.log_delayed= transactional_table;
}
#endif /*!EMBEDDED_LIBRARY*/
thd->count_cuted_fields= CHECK_FIELD_WARN; /* calc cuted fields */
thd->cuted_fields=0L;
/* Skip lines if there is a line terminator */
if (ex->line_term->length() && ex->filetype != FILETYPE_XML)
{
/* ex->skip_lines needs to be preserved for logging */
while (skip_lines > 0)
{
skip_lines--;
if (read_info.next_line())
break;
}
}
thd_proc_info(thd, "reading file");
if (!(error= MY_TEST(read_info.error)))
{
table->reset_default_fields();
table->next_number_field=table->found_next_number_field;
if (ignore ||
handle_duplicates == DUP_REPLACE)
table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
if (handle_duplicates == DUP_REPLACE &&
(!table->triggers ||
!table->triggers->has_delete_triggers()))
table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE);
if (thd->locked_tables_mode <= LTM_LOCK_TABLES)
table->file->ha_start_bulk_insert((ha_rows) 0);
table->copy_blobs=1;
thd->abort_on_warning= !ignore && thd->is_strict_mode();
thd_progress_init(thd, 2);
if (table_list->table->validate_default_values_of_unset_fields(thd))
{
read_info.error= true;
error= 1;
}
else if (ex->filetype == FILETYPE_XML) /* load xml */
error= read_xml_field(thd, info, table_list, fields_vars,
set_fields, set_values, read_info,
*(ex->line_term), skip_lines, ignore);
else if (!field_term->length() && !enclosed->length())
error= read_fixed_length(thd, info, table_list, fields_vars,
set_fields, set_values, read_info,
skip_lines, ignore);
else
error= read_sep_field(thd, info, table_list, fields_vars,
set_fields, set_values, read_info,
*enclosed, skip_lines, ignore);
thd_proc_info(thd, "End bulk insert");
if (!error)
thd_progress_next_stage(thd);
if (thd->locked_tables_mode <= LTM_LOCK_TABLES &&
table->file->ha_end_bulk_insert() && !error)
{
table->file->print_error(my_errno, MYF(0));
error= 1;
}
table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
table->next_number_field=0;
}
if (file >= 0)
mysql_file_close(file, MYF(0));
free_blobs(table); /* if pack_blob was used */
table->copy_blobs=0;
thd->count_cuted_fields= CHECK_FIELD_IGNORE;
/*
simulated killing in the middle of per-row loop
must be effective for binlogging
*/
DBUG_EXECUTE_IF("simulate_kill_bug27571",
{
error=1;
thd->killed= KILL_QUERY;
};);
#ifndef EMBEDDED_LIBRARY
killed_status= (error == 0) ? NOT_KILLED : thd->killed;
#endif
/*
We must invalidate the table in query cache before binlog writing and
ha_autocommit_...
*/
query_cache_invalidate3(thd, table_list, 0);
if (error)
{
if (read_file_from_client)
read_info.skip_data_till_eof();
#ifndef EMBEDDED_LIBRARY
if (mysql_bin_log.is_open())
{
{
/*
Make sure last block (the one which caused the error) gets
logged.
*/
log_loaded_block(&read_info.cache, 0, 0);
/* If the file was not empty, wrote_create_file is true */
if (read_info.cache.wrote_create_file)
{
int errcode= query_error_code(thd, killed_status == NOT_KILLED);
/* since there is already an error, the possible error of
writing binary log will be ignored */
if (thd->transaction.stmt.modified_non_trans_table)
(void) write_execute_load_query_log_event(thd, ex,
table_list->db,
table_list->table_name,
is_concurrent,
handle_duplicates, ignore,
transactional_table,
errcode);
else
{
Delete_file_log_event d(thd, db, transactional_table);
(void) mysql_bin_log.write(&d);
}
}
}
}
#endif /*!EMBEDDED_LIBRARY*/
error= -1; // Error on read
goto err;
}
sprintf(name, ER_THD(thd, ER_LOAD_INFO),
(ulong) info.records, (ulong) info.deleted,
(ulong) (info.records - info.copied),
(long) thd->get_stmt_da()->current_statement_warn_count());
if (thd->transaction.stmt.modified_non_trans_table)
thd->transaction.all.modified_non_trans_table= TRUE;
thd->transaction.all.m_unsafe_rollback_flags|=
(thd->transaction.stmt.m_unsafe_rollback_flags & THD_TRANS::DID_WAIT);
#ifndef EMBEDDED_LIBRARY
if (mysql_bin_log.is_open())
{
/*
We need to do the job that is normally done inside
binlog_query() here, which is to ensure that the pending event
is written before tables are unlocked and before any other
events are written. We also need to update the table map
version for the binary log to mark that table maps are invalid
after this point.
*/
if (thd->is_current_stmt_binlog_format_row())
error= thd->binlog_flush_pending_rows_event(TRUE, transactional_table);
else
{
/*
As already explained above, we need to call log_loaded_block() to have
the last block logged
*/
log_loaded_block(&read_info.cache, 0, 0);
if (read_info.cache.wrote_create_file)
{
int errcode= query_error_code(thd, killed_status == NOT_KILLED);
error= write_execute_load_query_log_event(thd, ex,
table_list->db, table_list->table_name,
is_concurrent,
handle_duplicates, ignore,
transactional_table,
errcode);
}
/*
Flushing the IO CACHE while writing the execute load query log event
may result in error (for instance, because the max_binlog_size has been
reached, and rotation of the binary log failed).
*/
error= error || mysql_bin_log.get_log_file()->error;
}
if (error)
goto err;
}
#endif /*!EMBEDDED_LIBRARY*/
/* ok to client sent only after binlog write and engine commit */
my_ok(thd, info.copied + info.deleted, 0L, name);
err:
DBUG_ASSERT(transactional_table || !(info.copied || info.deleted) ||
thd->transaction.stmt.modified_non_trans_table);
table->file->ha_release_auto_increment();
table->auto_increment_field_not_null= FALSE;
thd->abort_on_warning= 0;
DBUG_RETURN(error);
}
#ifndef EMBEDDED_LIBRARY
/* Not a very useful function; just to avoid duplication of code */
static bool write_execute_load_query_log_event(THD *thd, sql_exchange* ex,
const char* db_arg, /* table's database */
const char* table_name_arg,
bool is_concurrent,
enum enum_duplicates duplicates,
bool ignore,
bool transactional_table,
int errcode)
{
char *load_data_query;
my_off_t fname_start,
fname_end;
List<Item> fv;
Item *item, *val;
int n;
const char *tdb= (thd->db != NULL ? thd->db : db_arg);
const char *qualify_db= NULL;
char command_buffer[1024];
String query_str(command_buffer, sizeof(command_buffer),
system_charset_info);
Load_log_event lle(thd, ex, tdb, table_name_arg, fv, is_concurrent,
duplicates, ignore, transactional_table);
/*
force in a LOCAL if there was one in the original.
*/
if (thd->lex->local_file)
lle.set_fname_outside_temp_buf(ex->file_name, strlen(ex->file_name));
query_str.length(0);
if (!thd->db || strcmp(db_arg, thd->db))
{
/*
If used database differs from table's database,
prefix table name with database name so that it
becomes a FQ name.
*/
qualify_db= db_arg;
}
lle.print_query(thd, FALSE, (const char *) ex->cs?ex->cs->csname:NULL,
&query_str, &fname_start, &fname_end, qualify_db);
/*
prepare fields-list and SET if needed; print_query won't do that for us.
*/
if (!thd->lex->field_list.is_empty())
{
List_iterator<Item> li(thd->lex->field_list);
query_str.append(" (");
n= 0;
while ((item= li++))
{
if (n++)
query_str.append(", ");
if (item->real_type() == Item::FIELD_ITEM)
append_identifier(thd, &query_str, item->name, strlen(item->name));
else
{
/* Actually Item_user_var_as_out_param despite claiming STRING_ITEM. */
DBUG_ASSERT(item->type() == Item::STRING_ITEM);
((Item_user_var_as_out_param *)item)->print_for_load(thd, &query_str);
}
}
query_str.append(")");
}
if (!thd->lex->update_list.is_empty())
{
List_iterator<Item> lu(thd->lex->update_list);
List_iterator<Item> lv(thd->lex->value_list);
query_str.append(STRING_WITH_LEN(" SET "));
n= 0;
while ((item= lu++))
{
val= lv++;
if (n++)
query_str.append(STRING_WITH_LEN(", "));
append_identifier(thd, &query_str, item->name, strlen(item->name));
query_str.append(val->name);
}
}
if (!(load_data_query= (char *)thd->strmake(query_str.ptr(), query_str.length())))
return TRUE;
Execute_load_query_log_event
e(thd, load_data_query, query_str.length(),
(uint) (fname_start - 1), (uint) fname_end,
(duplicates == DUP_REPLACE) ? LOAD_DUP_REPLACE :
(ignore ? LOAD_DUP_IGNORE : LOAD_DUP_ERROR),
transactional_table, FALSE, FALSE, errcode);
return mysql_bin_log.write(&e);
}
#endif
/****************************************************************************
** Read of rows of fixed size + optional garage + optonal newline
****************************************************************************/
static int
read_fixed_length(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
List<Item> &fields_vars, List<Item> &set_fields,
List<Item> &set_values, READ_INFO &read_info,
ulong skip_lines, bool ignore_check_option_errors)
{
List_iterator_fast<Item> it(fields_vars);
Item_field *sql_field;
TABLE *table= table_list->table;
bool err, progress_reports, auto_increment_field_not_null=false;
ulonglong counter, time_to_report_progress;
DBUG_ENTER("read_fixed_length");
counter= 0;
time_to_report_progress= MY_HOW_OFTEN_TO_WRITE/10;
progress_reports= 1;
if ((thd->progress.max_counter= read_info.file_length()) == ~(my_off_t) 0)
progress_reports= 0;
while ((sql_field= (Item_field*) it++))
{
if (sql_field->field == table->next_number_field)
auto_increment_field_not_null= true;
}
while (!read_info.read_fixed_length())
{
if (thd->killed)
{
thd->send_kill_message();
DBUG_RETURN(1);
}
if (progress_reports)
{
thd->progress.counter= read_info.position();
if (++counter >= time_to_report_progress)
{
time_to_report_progress+= MY_HOW_OFTEN_TO_WRITE/10;
thd_progress_report(thd, thd->progress.counter,
thd->progress.max_counter);
}
}
if (skip_lines)
{
/*
We could implement this with a simple seek if:
- We are not using DATA INFILE LOCAL
- escape character is ""
- line starting prefix is ""
*/
skip_lines--;
continue;
}
it.rewind();
uchar *pos=read_info.row_start;
#ifdef HAVE_valgrind
read_info.row_end[0]=0;
#endif
restore_record(table, s->default_values);
/*
There is no variables in fields_vars list in this format so
this conversion is safe.
*/
while ((sql_field= (Item_field*) it++))
{
Field *field= sql_field->field;
table->auto_increment_field_not_null= auto_increment_field_not_null;
/*
No fields specified in fields_vars list can be null in this format.
Mark field as not null, we should do this for each row because of
restore_record...
*/
field->set_notnull();
if (pos == read_info.row_end)
{
thd->cuted_fields++; /* Not enough fields */
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WARN_TOO_FEW_RECORDS,
ER_THD(thd, ER_WARN_TOO_FEW_RECORDS),
thd->get_stmt_da()->current_row_for_warning());
/*
Timestamp fields that are NOT NULL are autoupdated if there is no
corresponding value in the data file.
*/
if (!field->maybe_null() && field->type() == FIELD_TYPE_TIMESTAMP)
field->set_time();
}
else
{
uint length;
uchar save_chr;
if ((length=(uint) (read_info.row_end-pos)) >
field->field_length)
length=field->field_length;
save_chr=pos[length]; pos[length]='\0'; // Safeguard aganst malloc
field->store((char*) pos,length,read_info.read_charset);
pos[length]=save_chr;
if ((pos+=length) > read_info.row_end)
pos= read_info.row_end; /* Fills rest with space */
}
/* Do not auto-update this field. */
field->set_has_explicit_value();
}
if (pos != read_info.row_end)
{
thd->cuted_fields++; /* To long row */
push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
ER_WARN_TOO_MANY_RECORDS,
ER_THD(thd, ER_WARN_TOO_MANY_RECORDS),
thd->get_stmt_da()->current_row_for_warning());
}
if (thd->killed ||
fill_record_n_invoke_before_triggers(thd, table, set_fields, set_values,
ignore_check_option_errors,
TRG_EVENT_INSERT))
DBUG_RETURN(1);
switch (table_list->view_check_option(thd, ignore_check_option_errors)) {
case VIEW_CHECK_SKIP:
read_info.next_line();
goto continue_loop;
case VIEW_CHECK_ERROR:
DBUG_RETURN(-1);
}
err= write_record(thd, table, &info);
table->auto_increment_field_not_null= FALSE;
if (err)
DBUG_RETURN(1);
/*
We don't need to reset auto-increment field since we are restoring
its default value at the beginning of each loop iteration.
*/
if (read_info.next_line()) // Skip to next line
break;