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isql(1) unixODBC manual pages isql(1) NAME isql, iusql - unixODBC interactive SQL command-line tools SYNOPSIS isql DSN [USER [PASSWORD]] [options] DESCRIPTION isql and iusql are command-line tools allowing users to execute SQL interactively or in batches. The tools provide several useful features, including an option to generate output wrapped in an HTML table. iusql is the same as isql but includes built-in Unicode support. Some data sources only work with iusql. ARGUMENTS DSN The Data Source Name (DSN) used to connect to the SQL database. unixODBC looks for the specified DSN in /etc/odbc.ini and $HOME/.odbc.ini, with the latter taking precedence. When searching the configuration files, unixODBC looks for a bare name. If the DSN begins with a semicolon, it is treated as a connection string. The connection string can contain a DSN and/or other semicolon-separated parameters. USER Specifies the database user or role under which the connection should be made. This parameter overrides any UID specified in the data source configuration files. PASSWORD Password required to access the database for the specified USER. This parameter overrides any PASSWORD specified in the data source configuration files. OPTIONS -b Run 'isql' in non-interactive batch mode. In this mode, 'isql' processes from standard input, expecting one SQL command per line. -dDELIMITER Delimit columns with the specified delimiter. -xHEX Delimit columns with the character represented in hexadecimal by -c Output the names of the columns on the first row. This option can only be used with the -d or -x options. -mNUM Limit the column display width to NUM characters. -lLOCALE Set the character locale to LOCALE. -q Wrap the character fields in double quotes. -3 Use calls from ODBC version 3. -n Process multiple lines of SQL, terminated with the GO command. -e Use SQLExecDirect instead of Prepare. -k Use SQLDriverConnect. -v Enable verbose mode, fully describing all errors. This option is useful for debugging. --version Display the program version. -LNUM Set the maximum number of characters displayed from a character field to NUM. The default value is 300 characters. COMMANDS This section briefly describes some isql and iusql run-time commands. help List all tables in the database. help table List all columns in the table. help help List all help options. EXAMPLES A bare DSN: $ iusql WebDB MyID MyPWD -w -b < My.sql Connects to the WebDB DSN as user MyID with password MyPWD, then executes the commands in the My.sql file and returns the results wrapped in an HTML table. Note the leading semicolon on the connection string. $ iusql ";DSN=WebDB" MyID MyPWD -w -b < My.sql Options in the DSN may be overridden in the connection string: $ iusql ";DSN=WebDB;Driver=PostgreSQL ODBC;UID=MyID;PASSWORD=secret;Debug=1;CommLog=1" -v A string DSN: A string DSN may be provided in its entirety, with no file DSN reference at all: $ iusql ";Driver=PostgreSQL Unicode;UID=MyID;PASSWORD=secret" -v TROUBLESHOOTING Cryptic error messages Re-run isql or iusql with the -v flag to get more information from errors, and/or enable Trace mode in odbcinst.ini. Missing driver definition Check that the driver name specified by the Driver entry in the odbc.ini data-source definition is present in odbcinst.ini and exactly matches the odbcinst.ini [section name]. Unloadable or incompatible driver If the ODBC driver is properly specified for the data source, it is possible that the driver is not loadable. Check for mix-ups between Unicode and ANSI drivers, and verify the driver paths in the odbcinst.ini [section name]. Unicode data sources with ANSI clients Some data sources are Unicode-only and require the use of iusql. If isql reports [IM002][unixODBC][Driver Manager]Data source name not found and no default driver specified [ISQL]ERROR: Could not SQLConnect but the data source and driver required are listed by odbcinst -q -d and odbcinst -q -s then try iusql. FILES /etc/odbc.ini Configuration file containing system-wide Data Source Name (DSN) definitions. See odbc.ini(5) for more information. $HOME/.odbc.ini "The unixODBC Administrator Manual (HTML)" AUTHORS The authors of unixODBC are Peter Harvey <pharvey@codebydesign.com> and Nick Gorham <nick@lurcher.org>. For a full list of contributors, refer to the AUTHORS file. COPYRIGHT unixODBC is licensed under the GNU Lesser General Public License. For details about the license, see the COPYING file. version 2.3.11 Thu 14 Jan 2021 isql(1)