By Cruz F. R., Mateus G. R., Smith J. M.
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In this example, Store Number is not a valid SPSS variable name; so, a variable name of StoreNumber is automatically created, and the original column heading is used as the variable label. The FROM clause identifies the worksheets to read. The WHERE clause indicates that the data should be merged by matching the values of the column Store Number in the three worksheets. 36 Chapter 3 Figure 3-7 Merged worksheets in SPSS Reading Text Data Files A text data file is simply a text file that contains data.
In this example, we have split the long string onto two lines using a plus sign (+) to combine the two strings. The SQL subcommand can contain any SQL statements supported by the database format. Each line must be enclosed in single or double quotes. SELECT * FROM CombinedTable reads all of the fields (columns) and all records (rows) from the table named CombinedTable in the database. Any field names that are not valid SPSS variable names are automatically converted to valid variable names, and the original field names are used as variable labels.
Database Wizard It’s probably a good idea to use the Database Wizard (File menu, Open Database) the first time you retrieve data from a database source. At the last step of the wizard, you can paste the equivalent commands into a command syntax window. Although the SQL generated by the wizard tends to be overly verbose, it also generates the CONNECT string, which you might never figure out without the wizard. Reading a Single Database Table SPSS reads data from databases by reading database tables.