I am trying to copy from 1 table to another table on different database.
The SQL query dont seem to work:
INSERT INTO db1.table
SELECT T.number, T.dob, T.house_number FROM `db2.table2` as T;
I am getting an error saying:
ERROR 1146 (42S02): Table 'db2.table2' doesn't exist
If you insist on quoting the table name (not needed), it should be
FROM `db2`.`table2`
Could you try something like this:
select * into dbo.test2 from dbo.test1
CREATE TABLE recipes_new LIKE production.recipes;
INSERT recipes_new SELECT * FROM production.recipes;
Check out this link:
http://www.tech-recipes.com/rx/1487/copy-an-existing-mysql-table-to-a-new-table/
Related
I have issue width CREATE TABLE and then INSERT you table.
This is what I want to do. CREATE TABLE LIKE and then INSERT SELECT * FROM.
I be creating multiple tables at the same time. I will be using a table like sample table to create the tables. Then editing the new tables in the future.
This Sample table.
id
old_data
new_data
1
pool_00
pool_01
2
pool_00
pool_02
This is MySQL code I’m having issues with.
CREATE TABLE `new_data` LIKE `old_data`;
INSERT `new_data` SELECT * FROM `old_data`;
This is the error I get.
Error
SQL query:
CREATE TABLE new_data LIKE old_data
MySQL said: Documentation
#1146 - Table 'oerpn_survivor_us.old_data' doesn't exist.
I run this MySQL code and it works.
CREATE TABLE pool_01 LIKE pool_00;
INSERT pool_01 SELECT * FROM pool_00;
CREATE TABLE pool_02 LIKE pool_00;
INSERT pool_02 SELECT * FROM pool_00;
Thank you for your help.
Taking the error message verbatim:
#1146 - Table 'oerpn_survivor_us.old_data' doesn't exist.
I would assume that the issue is that the old_data table exists on some database other than the one you are current using. If so, then one fix here would be to simply scope old_data to the correct database. Your code should look something like:
CREATE TABLE db2.new_data SELECT * FROM db1.old_data;
Here db2 is your current database, which appears to be oerpn_survivor_us, and db1 should be replaced by the name of the database which contains the old_data table.
I was trying to use this statement SELECT * INTO new_table FROM old_table but it's giving me the error of undeclared value. I wanted to create a back table from one existing table to another new table.
Do I have first to create another table? or am I missing something.
the link below shows that the same statement can be used, so I don't why it's not working for me
https://www.w3schools.com/sql/sql_select_into.asp
You should use the INSERT ... SELECT statement for MySQL instead.
INSERT INTO new_table
SELECT *
FROM old_table
But new_table must exist. If you have MySQL version >= 8.0.19, then you can use instead the following syntax:
INSERT INTO new_table TABLE old_table;
You may check 13.2.6.1 INSERT ... SELECT Statement.
Background information
The SELECT...INTO is not exactly standard, it has selective support by vendors.
The statement does exist in MySQL, but is used for "query result to be stored in variables or written to a file".
Is it necessary to define the new table definition before using SELECT INTO query in MYSQL.
I am getting problem to execute the query when I writ e like:
SELECT *
INTO newtable
FROM oldtable
WHERE 1=0;
the error showing is:
Undeclared variabie: newtable
if you have newtable
try :
INSERT INTO newtable SELECT ...
if you don't have newtable
try :
CREATE TABLE newtable AS SELECT ...
The MySQL manual search engine is terrible but googling for something like mysql 5.5 select into will normally take you to the right page:
MySQL Server doesn't support the SELECT ... INTO TABLE Sybase SQL
extension. Instead, MySQL Server supports the INSERT INTO ... SELECT
standard SQL syntax, which is basically the same thing.
If you read the documentation here it says:
With INSERT ... SELECT, you can quickly insert many rows into a table from one or many tables
So, yes, you need to create the new table first.
You can use CREATE TABLE new LIKE old to create a new, empty table, which is a copy of the original table structure.
I am using MySQL. I have a table called EMP, and now I need create one more table (EMP_TWO) with same schema, same columns, and same constraints. How can I do this?
To create a new table based on another tables structure / constraints use :
CREATE TABLE new_table LIKE old_table;
To copy the data across, if required, use
INSERT INTO new_table SELECT * FROM old_table;
Create table docs
Beware of the notes on the LIKE option :
Use LIKE to create an empty table based on the definition of another
table, including any column attributes and indexes defined in the
original table:
CREATE TABLE new_table LIKE original_table; The copy is created using the same
version of the table storage format as the original table. The SELECT
privilege is required on the original table.
LIKE works only for base tables, not for views.
CREATE TABLE ... LIKE does not preserve any DATA DIRECTORY or INDEX
DIRECTORY table options that were specified for the original table, or
any foreign key definitions.
If you want to copy only Structure then use
create table new_tbl like old_tbl;
If you want to copy Structure as well as data then use
create table new_tbl select * from old_tbl;
Create table in MySQL that matches another table?
Ans:
CREATE TABLE new_table AS SELECT * FROM old_table;
Why don't you go like this
CREATE TABLE new_table LIKE Select * from Old_Table;
or You can go by filtering data like this
CREATE TABLE new_table LIKE Select column1, column2, column3 from Old_Table where column1 = Value1;
For having Same constraint in your new table first you will have to create schema then you should go for data for schema creation
CREATE TABLE new_table LIKE Some_other_Table;
by only using the following command on MySQL command line 8.0 the following ERROR is displayed
[ mysql> select * into at from af;]
ERROR 1327 (42000): Undeclared variable: at
so just to copy the exact schema without the data in it you can use the create table with like statement as follows:
create table EMP_TWO like EMP;
and to copy table along with the data use:
create table EMP_TWO select * from EMP;
to only copy tables data after creating an empty table:
insert into EMP_TWO select * from EMP;
I want to confirm whether there is a certain table.
When create a table, there is an SQL sentence such as DROP TABLE IF EXISTS xxx_tb.
Will there be the method that can identify the existence of the table by SQL likewise?
Use INFORMATION_SCHEMA:
select * from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'MyTable';
Should be portable across most databases.
You want the SHOW TABLES command of MySQL:
SHOW TABLES LIKE 'xxx_tb';
Or indeed, you can just do a query like
SELECT COUNT(*) FROM tbl WHERE 1=0
Which will give an error (see documentation for exact error code, or try it) if the table doesn't exist, but succeed with no results if it does.