SQL Procedure
- Syntax
Procedure SyntaxPROC SQL StatementALTER TABLE StatementCONNECT StatementCREATE INDEX StatementCREATE TABLE StatementCREATE VIEW StatementDELETE StatementDESCRIBE StatementDISCONNECT StatementDROP StatementEXECUTE StatementINSERT StatementRESET StatementSELECT StatementUPDATE StatementVALIDATE Statement - Overview
- Examples Creating a Table and Inserting Data into ItCreating a Table from a Query's ResultUpdating Data in a PROC SQL TableJoining Two TablesCombining Two TablesReporting from DICTIONARY TablesPerforming an Outer JoinCreating a View from a Query's Result Joining Three TablesQuerying an In-Line View Retrieving Values with the SOUNDS-LIKE Operator Joining Two Tables and Calculating a New ValueProducing All the Possible Combinations of the Values in a ColumnMatching Case Rows and Control RowsCounting Missing Values with a SAS Macro
DESCRIBE Statement
Displays a PROC SQL definition in the SAS log.
| Restriction: | PROC SQL views are the only type of view allowed in a DESCRIBE VIEW statement. |
| See: | Reporting from DICTIONARY Tables |
Syntax
DESCRIBE TABLE table-name <,
… table-name>;
DESCRIBE VIEW proc-sql-view <,
… proc-sql-view>;
DESCRIBE TABLE CONSTRAINTS table-name <,
… table-name>;
Required Arguments
table-name
specifies a PROC SQL table. table-name can be a one-level name, a two-level libref.table name, or a physical pathname that is enclosed in single quotation marks.
proc-sql-view
specifies a PROC SQL view. proc-sql-view can be a one-level name, a two-level libref.view name, or a physical pathname that is enclosed in single quotation marks.
Details
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The DESCRIBE TABLE statement writes a CREATE TABLE statement to the SAS log for the table specified in the DESCRIBE TABLE statement, regardless of how the table was originally created (for example, with a DATA step). If applicable, SAS data set options are included with the table definition. If indexes are defined on columns in the table, then CREATE INDEX statements for those indexes are also written to the SAS log.
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The DESCRIBE VIEW statement writes a view definition to the SAS log. If you use a PROC SQL view in the DESCRIBE VIEW statement that is based on or derived from another view, then you might want to use the FEEDBACK option in the PROC SQL statement. This option displays in the SAS log how the underlying view is defined and expands any expressions that are used in this view definition. The CONTENTS statement in DATASETS procedure can also be used with a view to find out more information.To define any password-protected SAS view, you must specify a password. If the SAS view was created with more than one password, you must specify its most restrictive password if you want to access a definition of the view. For example, to define a SAS view that has both Read and Write protection, you must specify its Write password. Similarly, to define a view that has both Read and Alter protection, you must specify its Alter password. (Alter is the more restrictive of the two.)For more information, see “Using Passwords with Views” in Chapter 34 of SAS Language Reference: Concepts.
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The DESCRIBE TABLE CONSTRAINTS statement lists the integrity constraints that are defined for the specified table or tables. However, names of the foreign key data set variables that reference the primary key constraint will not be displayed as part of the primary key constraint's DESCRIBE TABLE output.
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