Java DB

Apache Derby

Derby Reference Manual

Derby Getting Started
Derby Reference Manual
Derby Developer's Guide
Derby Performance Tuning
Derby Server and Admin Guide
Derby Tools and Utilities
Derby Reference Manual
-SQL language reference
-Capitalization and special characters
-SQL identifiers
-Rules for SQL92 identifiers
-SQL92Identifier
-column-Name
-correlation-Name
-new-table-Name
-schemaName
-Simple-column-Name
-synonym-Name
-table-Name
-view-Name
-index-Name
-constraint-Name
-cursor-Name
-TriggerName
-
-RoleName
-Interaction with the dependency system
-ALTER TABLE
-CALL (PROCEDURE)
-CREATE statements
-DECLARE GLOBAL TEMPORARY TABLE
-DELETE
-DROP statements
-GRANT
-INSERT
-LOCK TABLE
-RENAME statements
-REVOKE
-SET statements
-SELECT
-UPDATE
-SQL clauses
-SQL expressions
-JOIN operations
-SQL queries
-Built-in functions
-Standard built-in functions
-Aggregates (set functions)
-ABS or ABSVAL function
-ACOS function
-ASIN function
-ATAN function
-ATAN2 function
-AVG function
-BIGINT function
-CASE expressions
-CAST function
-CEIL or CEILING function
-CHAR function
-COALESCE function
-Concatenation operator
-COS function
-COSH function
-COT function
-COUNT function
-COUNT(*) function
-CURRENT DATE function
-CURRENT_DATE function
-CURRENT ISOLATION function
-CURRENT_ROLE function
-CURRENT SCHEMA function
-CURRENT TIME function
-CURRENT_TIME function
-CURRENT TIMESTAMP function
-CURRENT_TIMESTAMP function
-CURRENT_USER function
-DATE function
-DAY function
-DEGREES function
-DOUBLE function
-EXP function
-FLOOR function
-HOUR function
-IDENTITY_VAL_LOCAL function
-INTEGER function
-LCASE or LOWER function
-LENGTH function
-LN or LOG function
-LOG10 function
-LOCATE function
-LTRIM function
-MAX function
-MIN function
-MINUTE function
-MOD function
-MONTH function
-NULLIF expressions
-PI function
-RADIANS function
-RANDOM function
-RAND function
-ROW_NUMBER function
-RTRIM function
-SECOND function
-SESSION_USER function
-SIGN function
-SIN function
-SINH function
-SMALLINT function
-SQRT function
-SUBSTR function
-SUM function
-TAN function
-TANH function
-TIME function
-TIMESTAMP function
-TRIM function
-UCASE or UPPER function
-USER function
-VARCHAR function
-XMLEXISTS operator
-XMLPARSE operator
-XMLQUERY operator
-XMLSERIALIZE operator
-YEAR function
-Built-in system functions
-Built-in system procedures
-SYSCS_B ACKUP_D ATABASE
-SYSCS_BAC KUP_DATAB ASE_NOWAIT
-SYSCS_BACKUP_DAT ABASE_AND_ENABLE _LOG_ARCHIVE_MODE
-SYSCS_BACKUP_DATAB ASE_AND_ENABLE_LOG ARCHIVE_MODE_NOWAIT
-SYSCS_EMP TY_STATEM ENT_CACHE
-SYSCS_CH ECKPOINT _DATABASE
-SYSCS_COMPRESS_TABLE
-SYSCS_INP LACE_COMP RESS_TABLE
-SYSCS_DISA BLE_LOG_AR CHIVE_MODE
-SYSCS_EXPORT_TABLE
-SYSCS_EXPOR T_TABLE_LOB S_TO_EXTFILE
-SYSCS_EXPORT_QUERY
-SYSCS_EXPOR T_QUERY_LOB S_TO_EXTFILE
-SYSCS_IMPORT_DATA
-SYSCS_IMPOR T_DATA_LOBS FROM_EXTFILE
-SYSCS_IMPORT_TABLE
-SYSCS_IMPORT _TABLE_LOBS_ FROM_EXTFILE
-SYSCS_F REEZE_D ATABASE
-SYSCS_U NFREEZE DATABASE
-SYSCS_REL OAD_SECUR ITY_POLICY
-SYSCS_SET _DATABASE _PROPERTY
-SYSCS_SET _RUNTIMES TATISTICS
-SYSCS_SET _STATISTI CS_TIMING
-SYSCS_S ET_XPLA N_SCHEMA
-SYSCS_S ET_XPLA IN_MODE
-SYSCS_S ET_USER _ACCESS
-SYSCS_U PDATE_S ATISTICS
-SYSCS_DIAG diagnostic tables and functions
-Data types
-Argument matching
-SQL reserved words
-Derby support for SQL-92 features
-Derby system tables
-XPLAIN style tables
-Derby exception messages and SQL states
-JDBC reference
-java.sql.Driver interface
-java. sql. DriverManager. getConnection method
-java.sql.Connection interface
-java. sql. DatabaseMetaData interface
-java.sql.Statement interface
-java. sql. CallableStatement interface
-java. sql. PreparedStatement interface
-java.sql.ResultSet interface
-java. sql. ResultSetMetaData interface
-java.sql.SQLException class
-java.sql.SQLWarning class
-java.sql.Savepoint interface
-Mapping of java. sql. Types to SQL types
-JDBC Package for Connected Device Configuration/Foundation Profile (JSR 169)
-JDBC 4.0-only features
-Setting attributes for the database connection URL
-bootPassword= key attribute
-collation= collation attribute
-create= true attribute
-createFrom= path attribute
-databaseName= nameofDatabase attribute
-dataEncryption= true attribute
-drop= true attribute
-encryptionKey= key attribute
-encryptionProvider= providerName attribute
-encryptionAlgorithm= algorithm attribute
-failover= true attribute
-logDevice= logDirectoryPath attribute
-newEncryptionKey= key attribute
-newBootPassword= newPassword attribute
-password= userPassword attribute
-restoreFrom= path attribute
-rollForwardRecoveryFrom= path attribute
-securityMechanism= value attribute
-shutdown= true attribute
-slaveHost= hostname attribute
-slavePort= portValue attribute
-startMaster= true attribute
-startSlave= true attribute
-stopMaster= true attribute
-stopSlave= true attribute
-territory= ll_CC attribute
-traceDirectory= path attribute
-traceFile= path attribute
-traceFileAppend= true attribute
-traceLevel= value attribute
-upgrade= true attribute
-user= userName attribute
-ssl= sslMode attribute
-Creating a connection without specifying attributes
-Derby property reference
-Scope of Derby properties
-Dynamic and static properties
-Derby properties
-derby. authentication. builtin. algorithm
-derby. authentication. ldap. searchAuthDN
-derby. authentication. ldap. searchAuthPW
-derby. authentication. ldap. searchBase
-derby. authentication. ldap. searchFilter
-
-
-derby. connection. requireAuthentication
-derby. database. defaultConnectionMode
-derby. database. forceDatabaseLock
-
-
-
-derby. database. readOnlyAccessUsers
-derby. database. sqlAuthorization
-derby.infolog.append
-derby. jdbc. xaTransactionTimeout
-
-derby. language. logStatementText
-
-
-derby. locks. escalationThreshold
-derby.locks.monitor
-
-derby. replication. logBufferSize
-derby. replication. maxLogShippingInterval
-derby. replication. minLogShippingInterval
-
-
-derby. storage. minimumRecordSize
-
-derby. storage. pageReservedSpace
-
-
-
-
-
-
-derby. stream. error. logSeverityLevel
-derby.system.bootAll
-
-derby.system.home
-derby.user.UserName
-J2EE Compliance: Java Transaction API and javax. sql Interfaces
-Derby API
-Supported territories
-Derby limitations

 

Storing values of one numeric data type in columns of another numeric data type

An attempt to put a floating-point type of a larger storage size into a location of a smaller size fails only if the value cannot be stored in the smaller-size location. For example: 
create table mytable (r REAL, d DOUBLE PRECISION);
0 rows inserted/updated/deleted
INSERT INTO mytable (r, d) values (3.4028236E38, 3.4028235E38);
ERROR X0X41: The number '3.4028236E38' is outside the range for
the data type REAL.
You can store a floating point type in an INTEGER column; the fractional part of the number is truncated. For example: 
INSERT INTO mytable(integer_column) values (1.09e0);
1 row inserted/updated/deleted
SELECT integer_column
FROM mytable;
I
---------------
1

Integer types can always be placed successfully in approximate numeric values, although with the possible loss of some precision.

Integers can be stored in decimals if the DECIMAL precision is large enough for the value. For example: 
ij> insert into mytable (decimal_column)
VALUES (55555555556666666666);
ERROR X0Y21: The number '55555555556666666666' is outside the
range of the target DECIMAL/NUMERIC(5,2) datatype.
An attempt to put an integer value of a larger storage size into a location of a smaller size fails if the value cannot be stored in the smaller-size location. For example: 
INSERT INTO mytable (int_column) values 2147483648;
ERROR 22003: The resulting value is outside the range for the 
data type INTEGER.
Note: When truncating trailing digits from a NUMERIC value, Derby rounds down.
 

javadb@jdbcurl.com