Mode

The compatibility modes. There is a fixed set of modes (for example PostgreSQL, MySQL). Each mode has different settings.

Methods
static Mode getInstance(String name)
Get the mode with the given name.
static Mode getInstance(String name)
Get the mode with the given name.
Parameters:
name - the name of the mode
Returns:
the mode object
static Mode getRegular()
static Mode getRegular()
Mode.ModeEnum getEnum()
Mode.ModeEnum getEnum()
String getName()
String getName()
String toString()
String toString()

Fields
static boolean aliasColumnName
static boolean allowAffinityKey
static boolean allowDB2TimestampFormat
static boolean allowEmptyInPredicate
static boolean allowEmptySchemaValuesAsDefaultSchema
static boolean allowPlusForStringConcat
static boolean allowUnrelatedOrderByExpressionsInDistinctQueries
static boolean alterTableExtensionsMySQL
static boolean alterTableModifyColumn
static boolean charToBinaryInUtf8
static boolean convertOnlyToSmallerScale
static boolean dateTimeValueWithinTransaction
static boolean decimalSequences
static Set disallowedTypes
static boolean discardWithTableHints
static boolean indexDefinitionInCreateTable
static boolean insertOnConflict
static boolean isolationLevelInSelectOrInsertStatement
static boolean logIsLogBase10
static boolean nullConcatIsNull
static boolean onDuplicateKeyUpdate
static boolean padFixedLengthStrings
static boolean regexpReplaceBackslashReferences
static boolean replaceInto
static boolean serialColumnIsNotPK
static boolean squareBracketQuotedNames
static boolean supportPoundSymbolForColumnNames
static Pattern supportedClientInfoPropertiesRegEx
static boolean swapConvertFunctionParameters
static boolean swapLogFunctionParameters
static boolean sysDummy1
static boolean systemColumns
static boolean treatEmptyStringsAsNull
static boolean truncateTableRestartIdentity
static HashMap typeByNameMap
static Mode.UniqueIndexNullsHandling uniqueIndexNullsHandling
static boolean useIdentityAsAutoIncrement
static boolean zeroExLiteralsAreBinaryStrings

aliasColumnName

When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the alias (I in this case) in ResultSetMetaData.getColumnName() and 'null' in getTableName(). If disabled, the real column name (ID in this case) and table name is returned.

allowAffinityKey

Whether AFFINITY KEY keywords are supported.

allowDB2TimestampFormat

Whether DB2 TIMESTAMP formats are allowed.

allowEmptyInPredicate

Whether IN predicate may have an empty value list.

allowEmptySchemaValuesAsDefaultSchema

If {@code true} constructs like 'CREATE TABLE CATALOG..TABLE_NAME' are allowed, the default schema is used.

allowPlusForStringConcat

Text can be concatenated using '+'.

allowUnrelatedOrderByExpressionsInDistinctQueries

If {@code true} unrelated ORDER BY expression are allowed in DISTINCT queries, if {@code false} they are disallowed.

alterTableExtensionsMySQL

If {@code true} some additional non-standard ALTER TABLE commands are allowed.

alterTableModifyColumn

If {@code true} non-standard ALTER TABLE MODIFY COLUMN is allowed.

charToBinaryInUtf8

Convert (VAR)CHAR to VAR(BINARY) and vice versa with UTF-8 encoding instead of HEX.

convertOnlyToSmallerScale

When converting the scale of decimal data, the number is only converted if the new scale is smaller than the current scale. Usually, the scale is converted and 0s are added if required.

dateTimeValueWithinTransaction

If {@code true}, datetime value function return the same value within a transaction, if {@code false} datetime value functions return the same value within a command.

decimalSequences

If {@code true} NEXT VALUE FOR SEQUENCE, CURRENT VALUE FOR SEQUENCE, SEQUENCE.NEXTVAL, and SEQUENCE.CURRVAL return values with DECIMAL/NUMERIC data type instead of BIGINT.

disallowedTypes

An optional Set of hidden/disallowed column types. Certain DBMSs don't support all column types provided by H2, such as "NUMBER" when using PostgreSQL mode.

discardWithTableHints

Discard SQLServer table hints (e.g. "SELECT * FROM table WITH (NOLOCK)")

indexDefinitionInCreateTable

Creating indexes in the CREATE TABLE statement is allowed using INDEX(..) or KEY(..). Example: create table test(id int primary key, name varchar(255), key idx_name(name));

insertOnConflict

PostgreSQL style INSERT ... ON CONFLICT DO NOTHING.

isolationLevelInSelectOrInsertStatement

can set the isolation level using WITH {RR|RS|CS|UR}

logIsLogBase10

The single-argument function LOG() uses base 10 instead of E.

nullConcatIsNull

Concatenation with NULL results in NULL. Usually, NULL is treated as an empty string if only one of the operands is NULL, and NULL is only returned if both operands are NULL.

onDuplicateKeyUpdate

MySQL style INSERT ... ON DUPLICATE KEY UPDATE ... and INSERT IGNORE.

padFixedLengthStrings

Whether to right-pad fixed strings with spaces.

regexpReplaceBackslashReferences

The function REGEXP_REPLACE() uses \ for back-references.

replaceInto

MySQL style REPLACE INTO.

serialColumnIsNotPK

SERIAL and BIGSERIAL columns are not automatically primary keys.

squareBracketQuotedNames

Identifiers may be quoted using square brackets as in [Test].

supportPoundSymbolForColumnNames

Support the # for column names

supportedClientInfoPropertiesRegEx

Pattern describing the keys the java.sql.Connection.setClientInfo() method accepts.

swapConvertFunctionParameters

Swap the parameters of the CONVERT function.

swapLogFunctionParameters

Swap the parameters of LOG() function.

sysDummy1

Support the pseudo-table SYSIBM.SYSDUMMY1.

systemColumns

The system columns 'CTID' and 'OID' are supported.

treatEmptyStringsAsNull

Empty strings are treated like NULL values. Useful for Oracle emulation.

truncateTableRestartIdentity

If {@code true} TRUNCATE TABLE uses RESTART IDENTITY by default.

typeByNameMap

Custom mappings from type names to data types.

uniqueIndexNullsHandling

Determines how rows with {@code NULL} values in indexed columns are handled in unique indexes.

useIdentityAsAutoIncrement

Use "IDENTITY" as an alias for "auto_increment" (SQLServer style)

zeroExLiteralsAreBinaryStrings

If {@code true} {@code 0x}-prefixed numbers are parsed as binary string literals, if {@code false} they are parsed as hexadecimal numeric values.