Using SQLCMD to Execute Multiple SQL Server Scripts
My company has a number of SQL installation scripts that build a fresh copy of our database. Each script relates to a specific SQL task. One script builds the database, another builds the tables, etc. I call SQLCMD repeatedly to execute each script. Is it possible to concatenate these scripts together and execute them with a single call to SQLCMD?
Yes it is. SQLCMD offers the :r command. When :r is encountered in a SQL script, it essentially tells the SQLCMD utility to include the file referenced into the calling script. This can afford you the opportunity to break up a single script into multiple scripts that represent functional areas of the database or to replace multiple SQLCMD calls with a single call to a main SQL file. Furthermore, using the :r command to execute multiple scripts in a single batch allows you define a single set of variables which can be seen by all the included scripts (provided there is no intervening GO terminator). SQLCMD was introduced in SQL Server 2005 and is the replacement for osql which Microsoft will be deprecating in a future release. If you're not familiar with SQLCMD, it is a command line utility that can be used to execute T-SQL commands and scripts from the operating system.
NOTE: You can download the sample files via the attached .zip file which you can unzip and use to execute the sample code that will be presented in this tip.
In the forthcoming example, I'll create 5 .sql files representing functional areas of a sample database called MSSQLTIPS. The first script is called CREATE_DB.sql and creates a database on your SQL 2005 Server called MSSQLTIPS. This script then includes 4 scripts (using the :r command) to perform table creation, table inserts, index creation, and stored procedure creation. A .bat file is created to execute SQLCMD from the Windows operating system in order to create a fresh database.
I first create a sub-folder under my C: drive called C:\Scripts. I store the following SQL scripts in this folder.
Script code to create tables
/* SCRIPT: CREATE_TABLES.sql */
PRINT 'CREATING TABLES '
IF OBJECT_ID('EMPLOYEE') IS NOT NULL
DROP TABLE DBO.EMPLOYEE
CREATE TABLE DBO.EMPLOYEE
EMPLOYEEID INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
IF OBJECT_ID('TIMECARD') IS NOT NULL
DROP TABLE DBO.TIMECARD
CREATE TABLE DBO.TIMECARD
TIMECARDID INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
EMPLOYEEID INT NOT NULL,
HOURSWORKED TINYINT NOT NULL,
HOURLYRATE MONEY NOT NULL,
DATEWORKED DATETIME NOT NULL
DECLARE @TOTAL_TABLES INT
SET @TOTAL_TABLES = 2
Script code to insert data
/* SCRIPT: TABLE_INSERTS.sql */
PRINT 'TOTAL TABLES CREATED = ' + CAST(@TOTAL_TABLES AS VARCHAR)
PRINT 'INSERTING DATA INTO EMPLOYEE'
INSERT INTO DBO.EMPLOYEE (FIRSTNAME, LASTNAME) SELECT 'JOHN', 'DOE'
INSERT INTO DBO.EMPLOYEE (FIRSTNAME, LASTNAME) SELECT 'JANE', 'DOE'
INSERT INTO DBO.EMPLOYEE (FIRSTNAME, LASTNAME) SELECT 'JEFF', 'DOE'
Script code to create indexes
/* SCRIPT: CREATE_INDEXES.sql */
PRINT 'CREATING INDEXES'
IF NOT EXISTS (SELECT 1 FROM SYS.INDEXES WHERE NAME = 'IX_EMPLOYEE_LASTNAME')
CREATE INDEX IX_EMPLOYEE_LASTNAME ON DBO.EMPLOYEE(LASTNAME, FIRSTNAME)
IF NOT EXISTS (SELECT 1 FROM SYS.INDEXES WHERE NAME = 'IX_TIMECARD_EMPLOYEEID')
CREATE INDEX IX_TIMECARD_EMPLOYEEID ON DBO.TIMECARD(EMPLOYEEID)
Script code to create procedures
/* SCRIPT: CREATE_PROCEDURES.sql */
PRINT 'CREATING PROCEDUREs'
IF OBJECT_ID('GET_EMPLOYEE_TIMECARDS') IS NOT NULL
DROP PROCEDURE DBO.GET_EMPLOYEE_TIMECARDS
CREATE PROCEDURE DBO.GET_EMPLOYEE_TIMECARDS @EMPLOYEEID INT
SET NOCOUNT ON
FROM DBO.EMPLOYEE E
JOIN DBO.TIMECARD T ON E.EMPLOYEEID = T.EMPLOYEEID
WHERE E.EMPLOYEEID = @EMPLOYEEID
ORDER BY DATEWORKED
Script code to create the new database and objects
/* SCRIPT: CREATE_DB.sql */
/* BUILD A DATABASE */
-- This is the main caller for each script
SET NOCOUNT ON
PRINT 'CREATING DATABASE'
IF EXISTS (SELECT 1 FROM SYS.DATABASES WHERE NAME = 'MSSQLTIPS')
DROP DATABASE MSSQLTIPS
CREATE DATABASE MSSQLTIPS
:On Error exit
PRINT 'DATABASE CREATE IS COMPLETE'
In the root C:\ folder, I create a file called create_db.bat which I use to create the database with all objects
SQLCMD -E -dmaster -ic:\Scripts\create_db.sql
Double clicking the .bat file, I see that each script processed and that the database created successfully.
The SQLCMD utility offers a wealth of commands that can used to modify the .bat file to further control and refine output and error behavior.
- Read more about the wealth of other SQLCMD commands in the SQL Server 2005 Books Online
- Read this SQLCMD tutorial in the SQL Server 2005 Books Online
- If you're using osql in your scripts under SQL Server 2005, consider replacing osql references with SQLCMD
- Download the scripts here
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