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Types of SQL statements
The following types of SQL statements are defined:
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Select
Allows you to generate SQL queries that contain all rows that match the specified conditions, even if the rows are duplicates. The queries can be sent to a display or to a file.
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Select Unique
Allows you to generate SQL queries that contain all unique rows that match the specified conditions. The queries can be sent to a display or to a file. Select Unique is not really a separate type, but rather is created by using the verb SELECT with the modifier DISTINCT added. If the user is running a Java 2-enabled browser, then Select Unique is not shown as a separate type.
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Insert
Allows you to generate SQL statements to insert new rows into a database.
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Update
Allows you to generate SQL statements to update rows in a database.
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Delete
Allows you to delete specified rows from a database.
The following table shows which tabs appear for each type of SQL statement.
- A (1) indicates that the tab appears only if the user is running a Java 1 browser.
- A (2) indicates that the tab appears only if the user is running a Java 2-enabled browser.
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Tab: Select Select Unique Insert Update Delete Start (2) X X X X Logon X X X X X Tables X X X X X Columns X X Join (1), Joins (2) X X Condition (1), Conditions (2) X X X X Sort (1), Order (2) X X Output X X SQL (1), Review (2) X X X X X Results X X Insert X Update X