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HCL OneDB 2.0.1
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  1. Home
  2. SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
  3. Guide to SQL: ReferenceThe HCL OneDB™ Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL OneDB™ dialect of the SQL language, as implemented in HCL OneDB™. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL OneDB™.
  4. Data typesEvery column in a table in a database is assigned a data type. The data type precisely defines the kinds of values that you can store in that column.
  5. Description of Data Types
  6. Unnamed ROW
  • SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
    • Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
    • Guide to SQL: ReferenceThe HCL OneDB™ Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL OneDB™ dialect of the SQL language, as implemented in HCL OneDB™. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL OneDB™.
      • System catalog tablesThe system catalog consists of tables and views that describe the structure of the database. Sometimes called the data dictionary, these table objects contain everything that the database knows about itself. Each system catalog table contains information about specific elements in the database. Each database has its own system catalog.
      • Data typesEvery column in a table in a database is assigned a data type. The data type precisely defines the kinds of values that you can store in that column.
        • Summary of data typesHCL OneDB™ supports the most common set of built-in data types. Additionally, an extended set of data types are supported on the database server.
        • Description of Data Types
          • BIGINT data typeThe BIGINT data type stores integers from -(263 -1) to 263 -1, which is –9,223,372,036,854,775,807 to 9,223,372,036,854,775,807, in eight bytes.
          • BIGSERIAL data typeThe BIGSERIAL data type stores a sequential integer, of the BIGINT data type, that is assigned automatically by the database server when a new row is inserted. The behavior of the BIGSERIAL data type is similar to the SERIAL data type, but with a larger range.
          • BLOB data typeThe BLOB data type stores any kind of binary data in random-access chunks, called sbspaces. Binary data typically consists of saved spreadsheets, program-load modules, digitized voice patterns, and so on. The database server performs no interpretation of the contents of a BLOB column.
          • BOOLEAN data typeThe BOOLEAN data type stores TRUE or FALSE data values as a single byte.
          • BYTE data typeThe BYTE data type stores any kind of binary data in an undifferentiated byte stream. Binary data typically consists of digitized information, such as spreadsheets, program load modules, digitized voice patterns, and so on.
          • CHAR(n) data typeThe CHAR data type stores any string of letters, numbers, and symbols. It can store single-byte and multibyte characters, based on the database locale.
          • CHARACTER(n) data typeThe CHARACTER data type is a synonym for CHAR.
          • CHARACTER VARYING(m,r) data typeThe CHARACTER VARYING data type stores a string of letters, digits, and symbols of varying length, where m is the maximum size of the column (in bytes) and r is the minimum number of bytes reserved for that column.
          • CLOB data typeThe CLOB data type stores any kind of text data in random-access chunks, called sbspaces. Text data can include text-formatting information, if this information is also textual, such as PostScript™, Hypertext Markup Language (HTML), Standard Graphic Markup Language (SGML), or Extensible Markup Language (XML) data.
          • DATE data typeThe DATE data type stores the calendar date. DATE data types require four bytes. A calendar date is stored internally as an integer value equal to the number of days since December 31, 1899.
          • DATETIME data typeThe DATETIME data type stores an instant in time expressed as a calendar date and time of day.
          • DEC data typeThe DEC data type is a synonym for DECIMAL.
          • DECIMALThe DECIMAL data type can take two forms: DECIMAL(p) floating point and DECIMAL(p,s) fixed point.
          • DISTINCT data typesA DISTINCT type is a data type that is derived from a source type (called the base type).
          • DOUBLE PRECISION data typesThe DOUBLE PRECISION keywords are a synonym for the FLOAT keyword.
          • FLOAT(n)
          • IDSSECURITYLABEL data typeThe IDSSECURITYLABEL type stores a security label in a table that is protected by a label-based access control (LBAC) security policy.
          • INT data typeThe INT data type is a synonym for INTEGER.
          • INT8The INT8 data type stores whole numbers that can range in value from –9,223,372,036,854,775,807 to 9,223,372,036,854,775,807 [or -(263-1) to 263-1], for 18 or 19 digits of precision.
          • INTEGER data typeThe INTEGER data type stores whole numbers that range from -2,147,483,647 to 2,147,483,647 for 9 or 10 digits of precision.
          • INTERVAL data typeThe INTERVAL data type stores a value that represents a span of time. INTERVAL types are divided into two classes: year-month intervals and day-time intervals.
          • LIST(e) data typeThe LIST data type is a collection type that can store ordered non-NULL elements of the same SQL data type.
          • LVARCHAR(m) data typeUse the LVARCHAR data type to create a column for storing variable-length character strings whose upper limit (m) can be up to 32,739 bytes.
          • MONEY(p,s) data typeThe MONEY data type stores currency amounts.
          • MULTISET(e) data typeThe MULTISET data type is a collection type that stores a non-ordered set that can include duplicate element values.
          • Named ROW
          • NCHAR(n) data typeThe NCHAR data type stores fixed-length character data. The data can be a string of single-byte or multibyte letters, digits, and other symbols that are supported by the code set of the database locale.
          • NUMERIC(p,s) data typeThe NUMERIC data type is a synonym for fixed-point DECIMAL.
          • NVARCHAR(m,r) data typeThe NVARCHAR data type stores strings of varying lengths. The string can include digits, symbols, and both single-byte and (in some locales) multibyte characters.
          • OPAQUE data typesAn OPAQUE type is a data type for which you must provide information to the database server.
          • REAL data typeThe REAL data type is a synonym for SMALLFLOAT.
          • ROW data type, NamedA named ROW data type must be declared with a name. This SQL identifier must be unique among data type names within the same database.
          • ROW data type, Unnamed An unnamed ROW type contains fields but has no user-declared name. An unnamed ROW type is defined by its structure.
          • SERIAL(n) data typeThe SERIAL data type stores a sequential integer, of the INT data type, that is automatically assigned by the database server when a new row is inserted.
          • SERIAL8(n) data typeThe SERIAL8 data type stores a sequential integer, of the INT8 data type, that is assigned automatically by the database server when a new row is inserted.
          • SET(e) data typeThe SET data type is an unordered collection type that stores unique elements
          • SMALLFLOATThe SMALLFLOAT data type stores single-precision floating-point numbers with approximately nine significant digits.
          • SMALLINT data typeThe SMALLINT data type stores small whole numbers that range from –32,767 to 32,767. The maximum negative number, –32,768, is a reserved value and cannot be used.
          • TEXT data typeThe TEXT data type stores any kind of text data. It can contain both single-byte and multibyte characters that the locale supports. The term simple large object refers to an instance of a TEXT or BYTE data type.
          • Unnamed ROW
          • VARCHAR(m,r) data typeThe VARCHAR data type stores character strings of varying length that contain single-byte and (if the locale supports them) multibyte characters, where m is the maximum size (in bytes) of the column and r is the minimum number of bytes reserved for that column.
        • Built-In Data Types
        • Extended Data Types
        • Data Type Casting and Conversion
        • Operator Precedence
      • Environment variablesVarious environment variables affect the functionality of your HCL OneDB™ products. You can set environment variables that identify your terminal, specify the location of your software and define other parameters.
      • Appendixes
    • Guide to SQL: TutorialThe HCL OneDB™ Guide to SQL: Tutorial shows how to use basic and advanced structured query language (SQL) to access and manipulate the data in your databases. It discusses the data manipulation language (DML) statements as well as triggers and stored procedure language (SPL) routines, which DML statements often use.

Unnamed ROW

See ROW data type, Unnamed.

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