Software Development Exam > Software Development Videos > MySQL (Sequential Query Language) Database Tutorial > MySQL Database Tutorial - 27 - How to Insert Multiple Rows
MySQL Database Tutorial - 27 - How to Insert Multiple Rows Video Lecture | MySQL (Sequential Query Language) Database Tutorial - Software Development
FAQs on MySQL Database Tutorial - 27 - How to Insert Multiple Rows Video Lecture - MySQL (Sequential Query Language) Database Tutorial - Software Development
| 1. How do I insert multiple rows in a MySQL database? |  |
Ans. To insert multiple rows in a MySQL database, you can use the INSERT INTO statement with the VALUES keyword followed by comma-separated sets of values. Each set of values represents a row to be inserted. For example:
INSERT INTO table_name (column1, column2, column3)
VALUES (value1, value2, value3),
(value4, value5, value6),
(value7, value8, value9);
This will insert three rows into the specified table with the specified column values.
| 2. Is it possible to insert multiple rows in a single SQL statement? | |
Ans. Yes, it is possible to insert multiple rows in a single SQL statement. As mentioned earlier, you can use the INSERT INTO statement with the VALUES keyword followed by comma-separated sets of values to insert multiple rows. The number of sets of values determines the number of rows to be inserted.
| 3. What should I do if I want to insert multiple rows with the same values for some columns? | |
Ans. If you want to insert multiple rows with the same values for some columns, you can specify the common values in the first set of values and omit them in the subsequent sets. For example:
INSERT INTO table_name (column1, column2, column3)
VALUES (common_value1, common_value2, common_value3),
(value4, value5, value6),
(value7, value8, value9);
This way, the first set of values will provide the common values for all rows, while the subsequent sets can have different values for the remaining columns.
| 4. Can I insert multiple rows from another table in a single SQL statement? | |
Ans. Yes, you can insert multiple rows from another table in a single SQL statement using the INSERT INTO SELECT statement. This statement allows you to select data from another table and insert it into the specified table. For example:
INSERT INTO table_name (column1, column2, column3)
SELECT column1, column2, column3
FROM another_table;
This will insert multiple rows into the specified table, where the values for the columns are selected from another_table.
| 5. What happens if there is a conflict while inserting multiple rows? | |
Ans. If there is a conflict while inserting multiple rows, it depends on the configuration of your database. By default, MySQL will stop the entire insertion process if any of the rows being inserted violates a unique constraint or primary key constraint. However, you can use the INSERT IGNORE statement to ignore the conflicting rows and continue inserting the remaining rows. Additionally, you can use the ON DUPLICATE KEY UPDATE statement to update the conflicting rows instead of stopping the insertion process.
Text Transcript from Video
all right my friends welcome to your
27th MySQL tutorial in I don't even know
what I'm gonna teach in this tutorial I
think I'm just gonna wing it but in the
last tutorial what we did is we left off
with inserting this row of data now
whenever we did we explicitly told it
that we want to insert an ID a name and
a cost but we didn't give it any values
for the seller ID in bits now by default
there are some times when you cannot
give it a value and it's gonna go ahead
and just insert the default value which
was in this case 0 now the default value
for numerical numbers not the other kind
of numbers the numerical numbers the
default value for numbers is 0 in
whenever you have strings of text or
characters like this that might be a
better way if I just highlight the
column name instead whenever you have
text the default value is null it's
gonna say n you ll and it basically
means nothing whenever you see the word
null it means nothing empty void space
nada so again the default values for
numbers is 0 in the default for text is
not however some tables will not allow
you to insert no or no value some tables
are gonna explicitly say that you have
to insert a value for every single
column and if you don't you're gonna get
error message so just be prepared for
that you know in the last story I showed
you guys how to insert only some columns
just be prepared that depending on how
you create your table you have to or not
have to insert all the values and I'll
teach you guys about that whenever I
show you guys how to create tables in
like two or three tutorials but for now
is I just want to warn you guys so heads
up so what I want to teach you guys in
this tutorial is how to insert multiple
rows of data so what you can do is you
can just go ahead and type a bunch of
insert into values and you know just
make a bunch of those statements and
insert them row by row by row or you can
do all in one query and I'm gonna show
you guys how to do that right now
so go ahead and hit insert into I say
hit a lot whenever I say hit
like insert into items and of course we
wanted to do it the proper way so ID
name might as well insert everything
cost seller underscore ID and bids now
after this go ahead and type the word
values just like before now how I like
to do it is I like type the word values
right here and whenever I'm working with
multiple rows of data I like to put each
row on a new line so on the first line
again what do we have one two three four
five five items in each row or five
pieces of information for each row or
each item one two
actually I'm going to use one two okay
calm down take a deep breath one two
three four five now again after every
piece of information you need a comma
after every row basically so I'm gonna
add I don't know let's just say three
rows for this tutorial and my mouse
isn't working there we go
so that and this one now remember after
the last row you don't add a comma
people do this a lot and if you do
you're gonna get an error message so for
the first piece of information again I
think we left off at 103 we inserted
like beef on a stick or something so
this is 104 and I'm gonna sell some beef
whoa take it easy caps locks I'm gonna
order or excuse me sell some beef chops
my favorite kind of chops and I'm gonna
sell these for $7.99 my seller ID is 1
and bids equals 0 now my next item is
105 of course and I'm gonna sell some
jelly pockets my favorite kind of
pockets and these are 450 each and again
one for seller ID that's Bucky Roberts
and zero now for the last thing that I'm
gonna sell it's 106 and what do I want
to sell they go out sack of ham
and I'm gonna sell this for 995 quite
the deal if you ask me and my seller ID
and number of bits so as you can see
basically the rules are quite similar to
what you would expect you go ahead and
write insert into and then you write the
order and number of columns basically
how do you want to insert your data so
whenever you type values each of these
is a new row of data again how do you
insert data well however you defined it
up here now just remember after each row
there's a comma except after the last
one if you're programming this in PHP or
something there would be a semicolon
right here but since you're just writing
this in phpMyAdmin you can just leave it
out so now let me go ahead and hit go
and well looking pretty good so we can
go ahead and verify this if we just
click on the items table do a little
browse sort by ID descending and come on
baby no whammy no whammy there we go so
there's my nice beef chops jelly pockets
in the sack ham by the way if anyone
wants it quite the deal and no bids so
that is how you insert multiple rows of
data again I like to take each row and
put it on a new line it just makes it a
little bit easier now I wanted you guys
about one last thing when it comes to
inserting data to be honest this is one
of those things that I don't even know
if I should show you because it's
usually a waste of space but it's
information that may come in handy one
day so you can also insert items into a
database or a table rather using a
select statement now let me give you an
example of when you would do this say
that I don't know say that you had a
website and you just spot out eBay
because you know your website is pretty
successful now
you want to merge your websites together
so you have all these items in your
table but they have all their items in
that table so are you saying that we're
gonna have to hire some guy to go
through and physically type like a
thousand or two thousand insert
statements no what you can do is you can
insert data into a table from a simple
select statement now again I only have
one table items here but pretend that we
have
a different table setup with the exact
same structure named more items and they
just had a bunch of other items so what
you would do is something like this
insert into items and you would of
course write how you would want to
insert them ID name cost seller ID and
bids and now instead of writing values
which you would have to explicitly type
each piece of information row by row you
can just use a select statement so
select ID name cost seller underscore ID
and bids from more items now this more
items table is just a fake table so
oxygenating them a fake table so again
if you had another table then what this
would do is it would select all of the
rows from that table and it would insert
them into your items table in this order
right here so again remember whenever
you're doing this is probably better to
use a where clause because if you don't
use a where Clause then it's gonna
select every single row now again I
don't have a fake table but this is how
you would do that basically take all the
rows from another table and insert them
into a single table so I guess it's good
if you're merging tables but otherwise
why do I say that this is not a good
idea because at first glance it might
seem quite useful well it's not a good
practice because then you're gonna have
the information on this table and this
table and as we know one of the rules in
MySQL whenever you have duplicate
information it's usually a waste of
space so guys please this is your
warning so basically um that's it that's
a tutorial you may use this whenever you
maybe you're making a new table with
your high-priced items or your new items
that you want to appear on your homepage
but generally stay away from it that's
my warning so anyways thank you guys for
watching and yeah don't forget to
subscribe and me on Google+ all that
good stuff send me a million dollars on
my website and I'll see you in the next
video in the next video we're gonna be
talking about updates see you then
27th MySQL tutorial in I don't even know
what I'm gonna teach in this tutorial I
think I'm just gonna wing it but in the
last tutorial what we did is we left off
with inserting this row of data now
whenever we did we explicitly told it
that we want to insert an ID a name and
a cost but we didn't give it any values
for the seller ID in bits now by default
there are some times when you cannot
give it a value and it's gonna go ahead
and just insert the default value which
was in this case 0 now the default value
for numerical numbers not the other kind
of numbers the numerical numbers the
default value for numbers is 0 in
whenever you have strings of text or
characters like this that might be a
better way if I just highlight the
column name instead whenever you have
text the default value is null it's
gonna say n you ll and it basically
means nothing whenever you see the word
null it means nothing empty void space
nada so again the default values for
numbers is 0 in the default for text is
not however some tables will not allow
you to insert no or no value some tables
are gonna explicitly say that you have
to insert a value for every single
column and if you don't you're gonna get
error message so just be prepared for
that you know in the last story I showed
you guys how to insert only some columns
just be prepared that depending on how
you create your table you have to or not
have to insert all the values and I'll
teach you guys about that whenever I
show you guys how to create tables in
like two or three tutorials but for now
is I just want to warn you guys so heads
up so what I want to teach you guys in
this tutorial is how to insert multiple
rows of data so what you can do is you
can just go ahead and type a bunch of
insert into values and you know just
make a bunch of those statements and
insert them row by row by row or you can
do all in one query and I'm gonna show
you guys how to do that right now
so go ahead and hit insert into I say
hit a lot whenever I say hit
like insert into items and of course we
wanted to do it the proper way so ID
name might as well insert everything
cost seller underscore ID and bids now
after this go ahead and type the word
values just like before now how I like
to do it is I like type the word values
right here and whenever I'm working with
multiple rows of data I like to put each
row on a new line so on the first line
again what do we have one two three four
five five items in each row or five
pieces of information for each row or
each item one two
actually I'm going to use one two okay
calm down take a deep breath one two
three four five now again after every
piece of information you need a comma
after every row basically so I'm gonna
add I don't know let's just say three
rows for this tutorial and my mouse
isn't working there we go
so that and this one now remember after
the last row you don't add a comma
people do this a lot and if you do
you're gonna get an error message so for
the first piece of information again I
think we left off at 103 we inserted
like beef on a stick or something so
this is 104 and I'm gonna sell some beef
whoa take it easy caps locks I'm gonna
order or excuse me sell some beef chops
my favorite kind of chops and I'm gonna
sell these for $7.99 my seller ID is 1
and bids equals 0 now my next item is
105 of course and I'm gonna sell some
jelly pockets my favorite kind of
pockets and these are 450 each and again
one for seller ID that's Bucky Roberts
and zero now for the last thing that I'm
gonna sell it's 106 and what do I want
to sell they go out sack of ham
and I'm gonna sell this for 995 quite
the deal if you ask me and my seller ID
and number of bits so as you can see
basically the rules are quite similar to
what you would expect you go ahead and
write insert into and then you write the
order and number of columns basically
how do you want to insert your data so
whenever you type values each of these
is a new row of data again how do you
insert data well however you defined it
up here now just remember after each row
there's a comma except after the last
one if you're programming this in PHP or
something there would be a semicolon
right here but since you're just writing
this in phpMyAdmin you can just leave it
out so now let me go ahead and hit go
and well looking pretty good so we can
go ahead and verify this if we just
click on the items table do a little
browse sort by ID descending and come on
baby no whammy no whammy there we go so
there's my nice beef chops jelly pockets
in the sack ham by the way if anyone
wants it quite the deal and no bids so
that is how you insert multiple rows of
data again I like to take each row and
put it on a new line it just makes it a
little bit easier now I wanted you guys
about one last thing when it comes to
inserting data to be honest this is one
of those things that I don't even know
if I should show you because it's
usually a waste of space but it's
information that may come in handy one
day so you can also insert items into a
database or a table rather using a
select statement now let me give you an
example of when you would do this say
that I don't know say that you had a
website and you just spot out eBay
because you know your website is pretty
successful now
you want to merge your websites together
so you have all these items in your
table but they have all their items in
that table so are you saying that we're
gonna have to hire some guy to go
through and physically type like a
thousand or two thousand insert
statements no what you can do is you can
insert data into a table from a simple
select statement now again I only have
one table items here but pretend that we
have
a different table setup with the exact
same structure named more items and they
just had a bunch of other items so what
you would do is something like this
insert into items and you would of
course write how you would want to
insert them ID name cost seller ID and
bids and now instead of writing values
which you would have to explicitly type
each piece of information row by row you
can just use a select statement so
select ID name cost seller underscore ID
and bids from more items now this more
items table is just a fake table so
oxygenating them a fake table so again
if you had another table then what this
would do is it would select all of the
rows from that table and it would insert
them into your items table in this order
right here so again remember whenever
you're doing this is probably better to
use a where clause because if you don't
use a where Clause then it's gonna
select every single row now again I
don't have a fake table but this is how
you would do that basically take all the
rows from another table and insert them
into a single table so I guess it's good
if you're merging tables but otherwise
why do I say that this is not a good
idea because at first glance it might
seem quite useful well it's not a good
practice because then you're gonna have
the information on this table and this
table and as we know one of the rules in
MySQL whenever you have duplicate
information it's usually a waste of
space so guys please this is your
warning so basically um that's it that's
a tutorial you may use this whenever you
maybe you're making a new table with
your high-priced items or your new items
that you want to appear on your homepage
but generally stay away from it that's
my warning so anyways thank you guys for
watching and yeah don't forget to
subscribe and me on Google+ all that
good stuff send me a million dollars on
my website and I'll see you in the next
video in the next video we're gonna be
talking about updates see you then
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About this Video
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Nov 22, 2024 Last updated |
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