When I input a code or anything into MySQL and hit "enter" it moves down and "->" appears. It is as if the code is not going through or the code is not being read.
I have attempted to download "add-ons" but I am really not sure what I am doing. This is for school and I am having trouble getting in touch with the professor.
I am new to this and can't figure out what I am doing wrong. Please help!
Please see image of what it looks like to me.
Please add semicolon ; after the mysql code.
Problem 1: Be aware of the prompt. Either of these
MariaDB >
mysql >
means that you are inside the MySQL commandline tool. You can enter only SQL statements. Most SQL queries need to be terminated by a ; or \G (but not both). To exit that tool:
exit
Or, if you get stuck in certain ways
CTRL-C
exit
Each of these implies a shell script:
$
#
mymachine$
/usr/home/rj $
C:\Users\rj:
and many others
Problem 2: mysqldump is a command, not SQL. So it needs to be executed in a shell script.
Problem 3: There is yet another problem. When it suggested typing 'help;', it did not mean for you to include the quotes. Instead, type just help;.
Related
Rookie question.
I was performing some mysql processes, and then the console displays an indented -> as in the image below, instead of the normal console prompt:
What does that mean? I can't do anything with it there.
Thank you!
Means that the sentence is not completed.
To end a sentence inside a mysql session, you have to type ;⏎.
By the way, you couldn't do a cat inside a mysql session.
I'm having a really hard time believing this question has never been asked before, it MUST be! I'm working on a batch file that needs to run some sql commands. All tutorials explaining this DO NOT WORK (referring to this link:Pass parameters to sql script that someone will undoubtedly mention)! I've tried other posts on this site verbatim and still nothing is working.
The way I see it, there are two ways I can approach this:
1. Either figure out how to call my basic MYSQL script and specify a parameter or..
2. Find an equivalent "USE ;" command that works in batch
My Batch file so far:
:START
#ECHO off
:Set_User
set usrCode = 0
mysql -u root SET #usrCode = '0'; \. caller.sql
Simply put, I want to pass 'usrCode' to my MYSQL script 'caller.sql' which looks like this:
USE `my_db`;
CALL collect_mismatch(#usrCode);
I know that procedures are a whole other topic to get into, but assume that the procedure is working just fine. I just can't get my parameter from Batch to MYSQL.
Ideally I would like to have the 'USE' & 'CALL' commands in my Batch file, but I can't find anything that let's me select a database in Batch before CALLing my procedure. That's when I tried the above link which boasts a simple command line entry and you're off to the races, but it isn't the case.
Any help would be greatly appreciated.
This will work;
echo SET #usrCode = '0'; > params.sql
type params.sql caller.sql | mysql -u root dbname
What's the SQL command to undo:
USE db;
The syntax I see everywhere is:
USE [db] ;
implying that I can leave out the db part. Not so - this is a syntax error however (maybe just syntax errors in the SQL syntax syntax?).
edit
The programming problem this is causing is that I can't reset the environment in which subsequent commands run. I could reset my DB connection, but this seems efficient.
cmdX; // Works
vs.
cmdX;
cmdY; // May fail because command X upset some state.
cmdX should clean up after itself and put things back where it found them.
Analogously:
cd ./a
doX()
cd ../
doY() // Y expects to not be in a?
I don't think you can. The documentation doesn't say the parameter is optional. It says:
The database remains the default until the end of the session or another USE statement is issued:
So if you want to drop the default, end your session and start a new one without selecting a DB.
What programming problem is this causing for you?
The database argument is not optional.
mysql> use
ERROR:
USE must be followed by a database name
I'm not sure where you saw this command with square brackets around the argument. That is not shown at the documentation page: http://dev.mysql.com/doc/refman/5.6/en/use.html
Microsoft SQL Server uses square brackets around identifiers (as opposed to a style to indicate an optional argument), but the MS SQL documentation for USE also doesn't show it: http://msdn.microsoft.com/en-us/library/ms188366.aspx
What would it mean to "undo" a USE command? Would it be like cd - in bash, making the previous default database again the default? There is no such command in MySQL for this. It doesn't remember what was your previous default database. If you want to return, you just have to USE that database and name it explicitly.
I have a php/mysql app that users can actually test/submit data to, so I want to delete/drop all the tables in my database and run my sql script to recreate and populate all the tables every hour.
So, in my cpanel, I have a cron job [see below]
/home/lwarinz/call_nw_test_script.sh
#!/bin/bash
mysql -hlocalhost -ulwarinz_hawaii -pdbAdmin67 -elwarinz_northwind \
</home/lwarinz/nw_test_Script.sql;
Note: I have have the query to drop and recreate the tables, but I am using this short query for testing:
USE lfwebz_northwind;
UPDATE employees SET FirstName = "Elizabeth" WHERE EmployeeID = 3;
but no matter what I change/adjust, I get the error below:
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the right syntax to use near
'lwarinz_northwind' at line 1
I have changed so many things and still nothing works.
I know the db, user and password are correct. I wrote a small db connect code to test, so I am sure. Since I am new to this, write cron jobs, I don't know what to check. Could anyone give me any ideas on what I need test, change, move, etc.?
Any help/suggestions would be greatly appreciated.
/home/lwarinz/call_nw_test_script.sh
#!/bin/bash
mysql -hlocalhost -ulwarinz_hawaii -pdbAdmin67 lwarinz_northwind </home/lwarinz/nw_test_Script.sql;
Because you're specifying the database on command line, dont include the USE as part of your script..
#!/bin/bash
mysql -hlocalhost -ulwarinz_hawaii -pdbAdmin67 lwarinz_northwind \
</home/lwarinz/nw_test_Script.sql;
Script:
UPDATE employees SET FirstName = "Elizabeth" WHERE EmployeeID = 3;
Just wanted to leave this note. I kept plugging away at this and finally got to the point that I knew I had the script correct. Contacted my site provider, for the 4th time, and just made the last guy look at the script and explain why exactly it didn't work. Long story short, there was something "off" in my space that needed to be adjusted [still not sure I believethat], so it works now.
Thanks for everyone's input, I do appreciate it.
I've been trying to get a shell(bash) script to insert a row into a REMOTE database, but I've been having some trouble :(
The script is meant to upload a file to a server, get a URL, HASH, and a file size, connect to a remote mysql database, and insert the data into an existing table. I've gotten it working until the remote MYSQL database bit.
It looks like this:
#!/bin/bash
zxw=randomtext
description=randomtext2
for file in "$#"
do
echo -n *****
ident= *****
data= ****
size=` ****
hash=`****
mysql --host=randomhost --user=randomuser --password=randompass randomdb
insert into table (field1,field2,field3) values('http://www.example.com/$hash','$file','$size');
echo "done"
done
I'm a total noob at programming so yeah :P
Anyway, I added the \ to escape the brackets as I was getting errors. As it is right now, the script is works fine until connects to the mysql database. It just connects to the mysql database and doesn't do the insert command (and I don't even know if the insert command would work in bash).
PS: I've tried both the mysql commands from the command line one by one, and they worked, though I defined the hash/file/size and didn't have the escaping "".
Anyway, what do you guys think? Is what I'm trying to do even possible? If so how?
Any help would be appreciated :)
The insert statement has to be sent to mysql, not another line in the shell script, so you need to make it a "here document".
mysql --host=randomhost --user=randomuser --password=randompass randomdb << EOF
insert into table (field1,field2,field3) values('http://www.site.com/$hash','$file','$size');
EOF
The << EOF means take everything before the next line that contains nothing but EOF (no whitespace at the beginning) as standard input to the program.
This might not be exactly what you are looking for but it is an option.
If you want to bypass the annoyance of actually including your query in the sh script, you can save the query as .sql file (useful sometimes when the query is REALLY big and complicated). This can be done with simple file IO in whatever language you are using.
Then you can simply include in your sh scrip something like:
mysql -u youruser -p yourpass -h remoteHost < query.sql &
This is called batch mode execution. Optionally, you can include the ampersand at the end to ensure that that line of the sh script does not block.
Also if you are concerned about the same data getting entered multiple times and your rdbms getting inconsistent, you should explore MySql transactions (commit, rollback, etc).
Don't use raw SQL from bash; bash has no sane facility for sanitizing the data beforehand. Generate a CSV file and upload that instead.