Mono SQL Query - Command Line Interface
=======================================
Running SQL Query on Mono:
mono sqlsharp.exe
Use this tool to test connection strings and enter SQL queries
to different ADO.NET providers in Mono.
Basically, there are five commands a user should know:
\provider, \connectionstring, \open, \quit, and \help
To connect to a database, you need to do the following:
1. set your data provider via \provider
Example:
SQL# \provider mysql
2. set your connection string via \connectionstring
Example:
SQL# \connectionstring Server=localhost;Database=test;User ID=someuser;Password=somepass
3. open a connection to the database via \open
Example:
SQL# \open
Here are the SQL# Commands taken from the help command: \h
SQL# Commands are case insensitive, so \Q and \q work the same.
CONNECTION AND PROVIDER COMMANDS
================================
\ConnectionString to set the ConnectionString
Example connection strings for various providers:
Microsoft SQL Server via System.Data.SqlClient or Mono.Data.TdsClient provider:
SQL# \ConnectionString Server=DANPC;Database=pubs;User ID=danmorg;Password=freetds
PostgreSQL via Npgsql provider:
SQL# \ConnectionString Server=localhost;Database=test;User ID=postgres;Password=fun2db
MySQL via ByteFX.Data.MySqlClient provider:
SQL# \ConnectionString Server=localhost;Database=test;User ID=mysql;Password=
MySQL via MySql.Data provider:
SQL# \ConnectionString Server=localhost;Database=test;User ID=mysql;Password=mypass;Pooling=false
ODBC via System.Data.Odbc provider using a DSN named "MSSQLDSN" I set up
in the Windows control panel's ODBC Data Sources which connects
to Microsoft SQL Server 2000:
SQL# \ConnectionString DSN=MSSQLDSN;UID=danmorg;PWD=freetds
SQL Lite via Mono.Data.SqliteClient provider which connects to the
database file SqliteTest.db; if not found, the file is created:
SQL# \ConnectionString URI=file:SqliteTest.db
OLE DB via System.Data.OleDb provider which connects to a PostgreSQL database:
SQL# \ConnectionString Provider=PostgreSQL;Addr=127.0.0.1;Database=rodrigo
Oracle via System.Data.OracleClient
SQL# \ConnectionString Data Source=testdb;User ID=scott;Password=tiger
FirebirdSql via FirebirdSql.Data.Firebird (not included with Mono)
SQL# \ConnectionString Database=C:\FIREBIRD\EXAMPLES\EMPLOYEE.FDB;User=SYSDBA;Password=masterkey;Dialect=3;Server=localhost
\Provider to set the Provider:
Provider Name Namespace Assembly
=========== ============= ========================== ==========================
OleDb OLE DB System.Data.OleDb System.Data
SqlClient MS SQL 7/2000 System.Data.SqlClient System.Data
Odbc ODBC System.Data.Odbc System.Data
Sqlite SQL Lite Mono.Data.SqliteClient Mono.Data.SqliteClient
Sybase Sybase Mono.Data.SybaseClient Mono.Data.SybaseClient
Tds TDS Generic Mono.Data.TdsClient Mono.Data.TdsClient
Oracle Oracle 8i System.Data.OracleClient System.Data.OracleClient
PostgreSql NET Postgres Npgsql Npgsql
ByteFX ByteFX MySQL ByteFX.Data.MySqlClient ByteFX.Data
Firebird Firebird FirebirdSql.Data.Firebird FirebirdSql.Data.Firebird
MySql MySQL AB MySql.Data.MySqlClient MySql.Data
Example: to set the provider for MySQL:
SQL# \provider mysql
Note: if you need to load an external provider in SQL#,
see the SQL# command \loadextprovider
\loadextprovider ASSEMBLY CLASS to load an external provider
use the complete name of its assembly and
its Connection class. No spaces in the assembly name.
Example: to load the MySQL provider MySql.Data.dll from the GAC:
SQL# \loadextprovider MySql.Data,Version=1.0.7.30073,Culture=neutral,PublicKeyToken=8e323390df8d9ed4 MySql.Data.MySqlCliet.MySqlConnection
\Open to open the connection
Example:
SQL# \open
\Close to close the connection
Example:
SQL# \close
\defaults to show default variables, such as, Provider and ConnectionString.
Example:
SQL# \defaults
\Q to quit
Example:
SQL# \q
SQL EXECUTION COMMANDS
======================
\e to execute SQL query (SELECT)
Example: to execute a query
SQL# SELECT * FROM EMPLOYEE
SQL# \e
Note: to get \e to automatically work after entering a query, put a
semicolon ; at the end of the query.
Example: to enter and exectue query at the same time
SQL# SELECT * FROM EMPLOYEE;
\exenonquery to execute an SQL non query (not a SELECT)
Example: to insert a row into a table:
SQL# INSERT INTO SOMETABLE (COL1, COL2) VALUES('ABC','DEF')
SQL# \exenonquery
Note: this can be used for those providers that are new and do not have
the ability to execute queries yet.
\exescalar to execute SQL to get a single row and single column.
Example: to execute a Maxium aggregate
SQL# SELECT MAX(grade) FROM class
SQL# \exescalar
\exexml FILENAME to execute SQL and save output to XML file
Example:
SQL# SELECT fname, lname, hire_date FROM employee
SQL# \exexml employee.xml
Note: this depends on DataAdapter, DataTable, and DataSet
to be working properly
FILE COMMANDS
=============
\f FILENAME to read a batch of SQL# commands from file
Example:
SQL# \f batch.sql#
Note: the SQL# commands are interpreted as they are read. If there is
any SQL statements, they are executed.
\o FILENAME to write result of commands executed to file.
Example:
SQL# \o result.txt
\load FILENAME to load from file SQL commands into SQL buffer.
Example:
SQL# \load commands.sql
\save FILENAME to save SQL commands from SQL buffer to file.
Example:
SQL# \save commands.sql
GENERAL PURPOSE COMMANDS
========================
\h to show help (all commands).
Example:
SQL# \h
\s {TRUE, FALSE} to silent messages.
Example 1:
SQL# \s true
Example 2:
SQL# \s false
\r to reset or clear the query buffer.
Example:
SQL# \r
\print - show what's in the SQL buffer now.
Example:
SQL# \print
VARIABLES WHICH CAN BE USED AS PARAMETERS
=========================================
\set NAME VALUE to set an internal variable.
Example:
SQL# \set sFirstName John
\unset NAME to remove an internal variable.
Example:
SQL# \unset sFirstName
\variable NAME to display the value of an internal variable.
Example:
SQL# \variable sFirstName
PROVIDER SUPPORT OPTIONS
========================
\UseParameters (TRUE,FALSE) to use parameters when executing SQL which
use the variables that were set.
If this option is true, the SQL
contains parameters, and for each parameter
which does not have a SQL# variable set, the
user will be prompted to enter the value
for that parameter.
Example:
SQL# \useparameter true
Default: false
\UseSimpleReader (TRUE,FALSE) to use simple reader when displaying results.
Example:
SQL# \usesimplereader true
Default: false. Mostly, this is dependent on the provider. If the provider
does not have enough of IDataReader implemented to have
the normal reader working, then the simple reader can be used.
