带列名的SQLite导出

2

我简要介绍了源代码。我没有看到任何明显的方式来做到这一点。但我鞭打了一个快速而脏的awk脚本来插入列名。

开头此转储：

PRAGMA foreign_keys=OFF; 
BEGIN TRANSACTION; 
CREATE TABLE test (test_id int primary key, test_name varchar(35)); 
INSERT INTO "test" VALUES(1,'Wibble'); 
INSERT INTO "test" VALUES(2,'Wobble'); 
INSERT INTO "test" VALUES(3,'Pernicious'); 
COMMIT;

我跑这个awk脚本

/CREATE TABLE/ { 
    # Extract the part between parens. This part contains the 
    # column definitions. 
    first_col = match($0, /\(.*\)/); 
    if (first_col) { 
    num_columns = split(substr($0, RSTART + 1, RLENGTH), a, ","); 
    for (i = 1; i <= num_columns; i++) { 
     sub(/^ /, "", a[i]); 
     split(a[i], names, " "); 
     column_names[i] = names[1]; 
    } 
    } 
} 
/INSERT INTO \"[A-Za-z].*\"/ { 
    insert_part = match($0, /INSERT INTO \"[A-Za-z].*\"/); 
    printf("%s ", substr($0, RSTART, RLENGTH)); 

    printf("("); 
    for (j = 1; j <= num_columns; j++) { 
    if (j == 1) { 
     printf("%s", column_names[j]); 
    } 
    else { 
     printf(", %s", column_names[j]); 
    } 
    } 
    printf(") "); 

    values_part = substr($0, RLENGTH+1, length($0) - RSTART); 
    printf("%s\n", values_part); 

}

这给了我这个输出。

INSERT INTO "test" (test_id, test_name) VALUES(1,'Wibble'); 
INSERT INTO "test" (test_id, test_name) VALUES(2,'Wobble'); 
INSERT INTO "test" (test_id, test_name) VALUES(3,'Pernicious');

来源

2011-01-26 04:20:46

5

让我再来看看这个。

将列名和INSERT语句转储到文件。

sqlite> .output test.data 
sqlite> pragma table_info(test); 
sqlite> .dump test 
sqlite> .quit 

$ cat test.data 
0|test_id|int|0||1 
1|test_name|varchar(35)|0||0 
PRAGMA foreign_keys=OFF; 
BEGIN TRANSACTION; 
CREATE TABLE test (test_id int primary key, test_name varchar(35)); 
INSERT INTO "test" VALUES(1,'Wibble'); 
INSERT INTO "test" VALUES(2,'Wobble'); 
INSERT INTO "test" VALUES(3,'Pernicious'); 
COMMIT;

现在运行这个awk脚本

/\|/ { 
    split($0, col_name, "|"); 
    column_names[++n] = col_name[2]; 
} 
/INSERT INTO \"[A-Za-z].*\"/ { 
    insert_part = match($0, /INSERT INTO \"[A-Za-z].*\"/); 
    printf("%s ", substr($0, RSTART, RLENGTH)); 

    printf("("); 
    for (i = 1; i <= n; i++) { 
    if (i == 1) { 
     printf("%s", column_names[i]); 
    } 
    else { 
     printf(", %s", column_names[i]); 
    } 
    } 
    printf(") "); 

    values_part = substr($0, RLENGTH+1, length($0) - RSTART); 
    printf("%s\n", values_part); 


}

而我们得到

$ awk -f dump_with_col_names.awk test.data 
INSERT INTO "test" (test_id, test_name) VALUES(1,'Wibble'); 
INSERT INTO "test" (test_id, test_name) VALUES(2,'Wobble'); 
INSERT INTO "test" (test_id, test_name) VALUES(3,'Pernicious');

来源

2011-01-26 04:59:34

+0

不幸的是，这只能在同一时间被用于一个表，失败，如果有一个竖线（ |）在您的数据的任何地方。 – qris 2014-10-09 16:40:07

3

我创造了这个shell脚本：

#!/bin/sh 

SQLITE=sqlite3 

if [ -z "$1" ] ; then 
     echo usage: $0 sqlite3.db 
     exit 
fi 

DB="$1" 

TABLES=`"$SQLITE" "$DB" .tables` 
echo "-- $TABLES" 
echo 'BEGIN TRANSACTION;' 

for TABLE in $TABLES ; do 
     echo 
     echo "-- $TABLE:"; 
     COLS=`"$SQLITE" "$DB" "pragma table_info($TABLE)" | 
     cut -d'|' -f2 ` 
     COLS_CS=`echo $COLS | sed 's/ /,/g'` 
     echo -e ".mode insert\nselect $COLS_CS from $TABLE;\n" | 
     "$SQLITE" "$DB" | 
     sed "s/^INSERT INTO table/INSERT INTO $TABLE ($COLS_CS)/" 
done 
echo 'COMMIT;';

两个问题：

个

表和cols必须有 '正常' 的名字（即 α-NUM下划线），
数据不能包含字符串 '\ n插入INTO 表'。

来源

2012-03-14 10:06:47 vitas

-2

简单python脚本做的伎俩

import sqlite3 
infile="your_file.sqlite3" 
table="your_table" 

conn = sqlite3.connect(infile) 
conn.row_factory = sqlite3.Row 

c = conn.cursor() 
res = c.execute("SELECT * FROM " + table) 
curr_row = -1 

for row in res: 
    curr_row += 1 
    if curr_row == 0: 
     col_names = sorted(row.keys()) 
     s = "INSERT INTO " + table + " (" 
     for col_name in col_names: 
     s+=col_name + "," 
     prefix = s[:-1] + ") VALUES (" 

    s = "" 
    for col_name in col_names: 
    col_val = row[col_name] 
    if isinstance(col_val,int) or isinstance(col_val,float): 
     s+= str(row[col_name]) +"," 
    else: 
     s+= "'" + str(row[col_name]) +"'," 
    print prefix,s[:-1],");"

来源

2013-10-23 20:24:26 dsamersoff

+2

这不能正确地转义名称，字符串或斑点。 – 2013-10-23 20:50:43

2

这里是一个Perl的版本，与任意数量的表的工作原理：

#!/usr/bin/perl 

use strict; 
use warnings; 

my @column_names; 
my $col_reset = 1; 

while(<>) 
{ 
    if (/^\d+\|/) { 
    if ($col_reset) 
    { 
     @column_names =(); 
     $col_reset = 0; 
    } 
    my @col_info = split(/\|/); 
    push @column_names, $col_info[1]; 
    } 

    if(/INSERT INTO/) { 
    m/(INSERT INTO \"?[A-Za-z_]+\"?) (.*)/ or die $_; 
    my $insert_part = $1; 
    my $values_part = $2; 
    print $insert_part." (".join(",", @column_names).") ".$values_part."\n"; 
    $col_reset = 1; 
    } 
}

而且我这是怎么生成的每个表的转储在数据库中：

grep 'CREATE TABLE' /tmp/school.sql.final \ 
| awk '{ print $3 }' \ 
| while read table; do 
    echo -e "pragma table_info($table);\n.dump $table" 
done | sqlite3 school.db \ 
> /tmp/school.sql.final-with-table-info

来源

2014-10-09 16:43:03 qris

0

另一个AWK sc ript，它直接从“sqlite3 data.db”的输出中工作。转储”为任意数量的表

它使用CREATE语句现在印有每列在其自己的行

BEGIN { 
     state = "default" # Used to know if we are in the middle of a table declaration 
     print_definitions = 1 # Wether to print CREATE statements or not 
} 

state == "default" && match($0, /^CREATE TABLE ([A-Za-z0-9_]+)/, a) { 
     tablename = a[1] 
     state = "definition" 
     if (print_definitions) 
       print 
     next 
} 

state == "definition" && /^);$/ { 
     state = "default" 
     if (print_definitions) 
       print 
     next 
} 

state == "definition" && ! (/PRIMARY/ || /UNIQUE/ || /CHECK/ || /FOREIGN/) { 
     if (length(columnlist [tablename])) 
       columnlist[tablename] = columnlist[tablename] ", " 
     columnlist[tablename] = columnlist[tablename] $1 
     if (print_definitions) 
       print 
     next 
} 

state == "default" && match($0, /^(INSERT INTO ")([A-Za-z0-9_]+)"(.*)$/, a) { 
     print a[1] a[2] "\" (" columnlist[a[2]] ")" a[3] 
}

来源

2016-03-04 18:18:17

+0

我不确定这回答了这个问题。 – Kmeixner 2016-03-04 18:37:17

0

路易斯L.溶液不是为我工作的事实，所以我做了这个GAWK解决方案从sqlite3的版本转储测试3.8.7.1

表CREATE语句都像如

CREATE TABLE "strom" (
    "id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, 
    "otec" integer NOT NULL, 
    "nazev" text NOT NULL, 
    "ikona" text NULL, 
    "barva" text NULL 
);

但也可能是这样一个

CREATE TABLE "changes" (
    "version" integer NOT NULL PRIMARY KEY AUTOINCREMENT, 
    "last_change" text NOT NULL DEFAULT (datetime('now','localtime')), 
    `ref` text NOT NULL, 
    "ref_id" text NULL, 
    "action" text NOT NULL 
, "data" text NOT NULL DEFAULT '');

#!/usr/bin/gawk -f 

# input is sqlite3 dump, tested with sqlite3 version 3.8.7.1 
# output are INSERT statements including column names 
# i.e. not e.g. 
# INSERT INTO "changes" VALUES(1,'2016-07-19 17:46:12','cenik','10','UPDATE',''); 
# like in standard dump 
# but 
# INSERT INTO "changes" ("version", "last_change", "ref", "ref_id", "action", "data") VALUES(1,'2016-07-19 17:46:12','cenik','10','UPDATE',''); 
# BEGIN TRANSACTION and COMMIT are included in output 

BEGIN { 
     state = "default" # default/definition/insert let us know wether we are in CREATE or INSERT statement 
     print_definitions = 0 # wether to print CREATE statements or not 
} 

state == "default" && match($0, /^CREATE TABLE \"([A-Za-z0-9_]+)\" *\($/, a) { 
     tablename = a[1] 
    state = "definition" 
     if (print_definitions) 
       print 
     next 
} 

state == "definition" && /^ *); *$/ { 
     state = "default" 
     if (print_definitions) 
       print 
     next 
} 

state == "definition" && ! (/^[\ ]{1,2}PRIMARY/ || /UNIQUE/ || /CHECK/ || /^[\ ]{1,2}FOREIGN KEY.*REFERENCES/) { 
     if (length(columnlist [tablename])) 
       columnlist[tablename] = columnlist[tablename] ", " 
     if (match($0, /(\".*\")/, b)) 
     columnlist[tablename] = columnlist[tablename] b[1] 
    if (match($0, /`(.*)`/, c)) 
     columnlist[tablename] = columnlist[tablename] "\""c[1]"\"" 
     if (print_definitions) 
       print 
} 

state == "definition" && /^.*); *$/ { 
     state = "default" 
     next 
} 

state == "default" && match($0, /^(INSERT INTO ")([A-Za-z0-9_]+)"(.*)/, a) { 
     print a[1] a[2] "\" (" columnlist[a[2]] ")" a[3] 
    state = "insert" 
    if (/^.*); *$/) 
     state = "default" 
} 

state == "insert" && ! /^INSERT INTO/{ 
    print 
} 

state == "insert" && /^.*); *$/ { 
     state = "default" 
    next 
} 

state == "default" && (/^ *BEGIN TRANSACTION;/ || /^ *COMMIT;/) { 
    print 
}

来源

2016-12-21 11:10:43 mirek

0

这不回答这个问题。我在这里写这篇文章是因为我正在处理类似的问题。一种方法是分别转储结构和数据。对于刀片像你描述的数据文件之外：

sqlite> .headers on 
sqlite> .mode insert MyTable 
sqlite> .output MyTable_data.sql 
sqlite> select * from MyTable; 
sqlite> .quit

来源

2017-05-24 11:38:07 abstractx1

0

有导入/导出从/ SQL数据源文本数据库信息和导出为CSV文本的SQLite的扩展模块。 http://www.ch-werner.de/sqliteodbc/html/impexp_8c.html

例如在Ubuntu你的步骤是：

从ubuntu的库中安装模块中源码命令行提示运行
```
sudo apt install libsqlite3-mod-impexp 
```
装载模块
```
.load libsqlite3_mod_impexp 
```
导出数据库t Ødump.sql文件
```
select export_sql('dump.sql','1'); 
```

结果例如，对于我的数据库是

INSERT OR REPLACE INTO "camera" ("name","reviews") VALUES('BenQ GH700', NULL); 
INSERT OR REPLACE INTO "camera" ("name","reviews") VALUES('Canon EOS 40D', NULL);

来源

2017-07-27 14:47:33 user169290

带列名的SQLite导出

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