org.modeshape.sequencer.ddl.dialect.postgres

## Class PostgresDdlParser

- java.lang.Object
- - org.modeshape.sequencer.ddl.StandardDdlParser
  - - org.modeshape.sequencer.ddl.dialect.postgres.PostgresDdlParser

- All Implemented Interfaces:
    DdlConstants, DdlConstants.StatementStartPhrases, DdlParser, PostgresDdlConstants, PostgresDdlConstants.PostgresStatementStartPhrases

      public class PostgresDdlParser
      extends StandardDdlParser
      implements PostgresDdlConstants, PostgresDdlConstants.PostgresStatementStartPhrases

  Postgres-specific DDL Parser. Includes custom data types as well as custom DDL statements.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from interface org.modeshape.sequencer.ddl.dialect.postgres.PostgresDdlConstants

      `PostgresDdlConstants.PostgresDataTypes, PostgresDdlConstants.PostgresStatementStartPhrases`

    - ### Nested classes/interfaces inherited from interface org.modeshape.sequencer.ddl.DdlConstants

      `DdlConstants.AstNodeNames, DdlConstants.DataTypes, DdlConstants.DropBehavior, DdlConstants.MatchType, DdlConstants.Problems, DdlConstants.ReferencialAction, DdlConstants.StatementStartPhrases`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `ID` The Postress parser identifier.

    - ### Fields inherited from interface org.modeshape.sequencer.ddl.dialect.postgres.PostgresDdlConstants

      `CUSTOM_KEYWORDS`

    - ### Fields inherited from interface org.modeshape.sequencer.ddl.DdlConstants

      `ALTER, CHECK, COLUMN, COMMA, CONSTRAINT, CONSTRAINT_C, CONSTRAINT_FK, CONSTRAINT_PK, CONSTRAINT_UC, CREATE, DECLARE, DEFAULT_TERMINATOR, DELETE, DROP, FOREIGN, FOREIGN_KEY, GIGA, GRANT, INDEX, INSERT, KEY, KILO, L_PAREN, L_SQUOTE, MEGA, MISSING_TERMINATOR_NODE_LITERAL, NOT, NULL, OFF, ON, PERIOD, PRIMARY, PRIMARY_KEY, R_PAREN, REVOKE, SCHEMA, SELECT, SEMICOLON, SET, SPACE, SQL_92_RESERVED_WORDS, TABLE, UNIQUE, UPDATE, VIEW`

    - ### Fields inherited from interface org.modeshape.sequencer.ddl.dialect.postgres.PostgresDdlConstants.PostgresStatementStartPhrases

      `ALTER_PHRASES, COMPLEX_STMT_TYPES, CREATE_PHRASES, DROP_PHRASES, MISC_PHRASES, SET_PHRASES, STMT_ABORT, STMT_ALTER_AGGREGATE, STMT_ALTER_CONVERSION, STMT_ALTER_DATABASE, STMT_ALTER_FOREIGN_DATA_WRAPPER, STMT_ALTER_FUNCTION, STMT_ALTER_GROUP, STMT_ALTER_INDEX, STMT_ALTER_LANGUAGE, STMT_ALTER_OPERATOR, STMT_ALTER_OPERATOR_CLASS, STMT_ALTER_OPERATOR_FAMILY, STMT_ALTER_PROCEDURAL_LANGUAGE, STMT_ALTER_ROLE, STMT_ALTER_SCHEMA, STMT_ALTER_SEQUENCE, STMT_ALTER_SERVER, STMT_ALTER_TABLESPACE, STMT_ALTER_TEXT_SEARCH, STMT_ALTER_TEXT_SEARCH_CONFIGURATION, STMT_ALTER_TEXT_SEARCH_DICTIONARY, STMT_ALTER_TEXT_SEARCH_PARSER, STMT_ALTER_TEXT_SEARCH_TEMPLATE, STMT_ALTER_TRIGGER, STMT_ALTER_TYPE, STMT_ALTER_USER, STMT_ALTER_USER_MAPPING, STMT_ALTER_VIEW, STMT_ANALYZE, STMT_CLUSTER, STMT_COMMENT_ON, STMT_COMMIT, STMT_COPY, STMT_CREATE_AGGREGATE, STMT_CREATE_CAST, STMT_CREATE_CONSTRAINT_TRIGGER, STMT_CREATE_CONVERSION, STMT_CREATE_DATABASE, STMT_CREATE_FOREIGN_DATA_WRAPPER, STMT_CREATE_FUNCTION, STMT_CREATE_GLOBAL_TEMP_TABLE, STMT_CREATE_GROUP, STMT_CREATE_INDEX, STMT_CREATE_LANGUAGE, STMT_CREATE_LOCAL_TEMP_TABLE, STMT_CREATE_OPERATOR, STMT_CREATE_OPERATOR_CLASS, STMT_CREATE_OPERATOR_FAMILY, STMT_CREATE_OR_REPLACE_FUNCTION, STMT_CREATE_OR_REPLACE_RULE, STMT_CREATE_PROCEDURAL_LANGUAGE, STMT_CREATE_ROLE, STMT_CREATE_RULE, STMT_CREATE_SEQUENCE, STMT_CREATE_SERVER, STMT_CREATE_TABLESPACE, STMT_CREATE_TEMP_SEQUENCE, STMT_CREATE_TEMP_TABLE, STMT_CREATE_TEMPORARY_SEQUENCE, STMT_CREATE_TEXT_SEARCH, STMT_CREATE_TEXT_SEARCH_CONFIGURATION, STMT_CREATE_TEXT_SEARCH_DICTIONARY, STMT_CREATE_TEXT_SEARCH_PARSER, STMT_CREATE_TEXT_SEARCH_TEMPLATE, STMT_CREATE_TRIGGER, STMT_CREATE_TRUSTED_PROCEDURAL_LANGUAGE, STMT_CREATE_TYPE, STMT_CREATE_UNIQUE_INDEX, STMT_CREATE_USER, STMT_CREATE_USER_MAPPING, STMT_DEALLOCATE, STMT_DEALLOCATE_PREPARE, STMT_DECLARE, STMT_DISCARD, STMT_DROP_AGGREGATE, STMT_DROP_CAST, STMT_DROP_CONSTRAINT_TRIGGER, STMT_DROP_CONVERSION, STMT_DROP_DATABASE, STMT_DROP_FOREIGN_DATA_WRAPPER, STMT_DROP_FUNCTION, STMT_DROP_GROUP, STMT_DROP_INDEX, STMT_DROP_LANGUAGE, STMT_DROP_OPERATOR, STMT_DROP_OPERATOR_CLASS, STMT_DROP_OPERATOR_FAMILY, STMT_DROP_OWNED_BY, STMT_DROP_PROCEDURAL_LANGUAGE, STMT_DROP_ROLE, STMT_DROP_RULE, STMT_DROP_SEQUENCE, STMT_DROP_SERVER, STMT_DROP_TABLESPACE, STMT_DROP_TEXT_SEARCH, STMT_DROP_TEXT_SEARCH_CONFIGURATION, STMT_DROP_TEXT_SEARCH_DICTIONARY, STMT_DROP_TEXT_SEARCH_PARSER, STMT_DROP_TEXT_SEARCH_TEMPLATE, STMT_DROP_TRIGGER, STMT_DROP_TYPE, STMT_DROP_USER, STMT_DROP_USER_MAPPING, STMT_EXPLAIN, STMT_EXPLAIN_ANALYZE, STMT_FETCH, STMT_LISTEN, STMT_LOAD, STMT_LOCK_TABLE, STMT_MOVE, STMT_NOTIFY, STMT_PREPARE, STMT_PREPARE_TRANSATION, STMT_REASSIGN_OWNED, STMT_REINDEX, STMT_RELEASE_SAVEPOINT, STMT_REVOKE, STMT_ROLLBACK, STMT_ROLLBACK_PREPARED, STMT_ROLLBACK_TO_SAVEPOINT, STMT_SELECT_INTO, STMT_SET_CONSTRAINTS, STMT_SET_ROLE, STMT_SET_SESSION_AUTHORIZATION, STMT_SET_TRANSACTION, STMT_SHOW, STMT_TRUNCATE, STMT_UNLISTEN, STMT_VACUUM, VALID_SCHEMA_CHILD_STMTS`

    - ### Fields inherited from interface org.modeshape.sequencer.ddl.DdlConstants.StatementStartPhrases

      `SQL_92_ALL_PHRASES, STMT_ALTER_DOMAIN, STMT_ALTER_TABLE, STMT_CREATE_ASSERTION, STMT_CREATE_CHARACTER_SET, STMT_CREATE_COLLATION, STMT_CREATE_DOMAIN, STMT_CREATE_GLOBAL_TEMPORARY_TABLE, STMT_CREATE_LOCAL_TEMPORARY_TABLE, STMT_CREATE_OR_REPLACE_VIEW, STMT_CREATE_SCHEMA, STMT_CREATE_TABLE, STMT_CREATE_TRANSLATION, STMT_CREATE_VIEW, STMT_DROP_ASSERTION, STMT_DROP_CHARACTER_SET, STMT_DROP_COLLATION, STMT_DROP_DOMAIN, STMT_DROP_SCHEMA, STMT_DROP_TABLE, STMT_DROP_TRANSLATION, STMT_DROP_VIEW, STMT_GRANT, STMT_INSERT_INTO, STMT_REVOKE, STMT_SET_DEFINE, VALID_SCHEMA_CHILD_TYPES`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `PostgresDdlParser()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected boolean` | `areNextTokensCreateTableOptions(DdlTokenStream tokens)`
    `protected List<String>` | `getCustomDataTypeStartWords()` Returns a list of custom data type start words which can be used to help identify a column definition sub-statement.
    `String` | `getId()` Get the identifier for this parser.
    `protected String[]` | `getValidSchemaChildTypes()`
    `protected void` | `initializeTokenStream(DdlTokenStream tokens)` Method called by `StandardDdlParser.score(String, String, DdlParserScorer)` and `StandardDdlParser.parse(String, AstNode, Object)` to initialize the `token stream`, giving subclasses a chance to `register key words` and `statement start phrases`.
    `protected AstNode` | `parseAlterStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL ALTER statement based on SQL 92 specifications.
    `protected AstNode` | `parseAlterTableStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL ALTER TABLE `AstNode` based on SQL 92 specifications.
    `protected void` | `parseColumns(DdlTokenStream tokens, AstNode tableNode, boolean isAlterTable)` Utility method designed to parse columns within an ALTER TABLE ADD statement.
    `protected AstNode` | `parseCreateSchemaStatement(DdlTokenStream tokens, AstNode parentNode)` Currently, only CREATE TABLE, CREATE VIEW, CREATE INDEX, CREATE SEQUENCE, CREATE TRIGGER and GRANT are accepted as clauses within CREATE SCHEMA.
    `protected AstNode` | `parseCreateStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL CREATE statement based on SQL 92 specifications.
    `protected AstNode` | `parseCreateTableStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL CREATE TABLE `AstNode` based on SQL 92 specifications.
    `protected AstNode` | `parseCreateViewStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL CREATE VIEW `AstNode` basedregisterStatementStartPhrase on SQL 92 specifications.
    `protected AstNode` | `parseCustomStatement(DdlTokenStream tokens, AstNode parentNode)` Catch-all method to parse unknown (not registered or handled by sub-classes) statements.
    `protected boolean` | `parseDefaultClause(DdlTokenStream tokens, AstNode columnNode)` Parses the default clause for a column and sets appropriate properties on the column node.
    `protected AstNode` | `parseDropStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL DROP `AstNode` based on SQL 92 specifications.
    `protected void` | `parseGrantPrivileges(DdlTokenStream tokens, List<AstNode> privileges)`
    `protected AstNode` | `parseGrantStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL GRANT statement `AstNode` based on SQL 92 specifications.
    `protected void` | `parseNextCreateTableOption(DdlTokenStream tokens, AstNode parentNode)`
    `protected AstNode` | `parseSetStatement(DdlTokenStream tokens, AstNode parentNode)` Parses DDL SET `AstNode` based on SQL 92 specifications.
    `protected void` | `rewrite(DdlTokenStream tokens, AstNode rootNode)`

    - ### Methods inherited from class org.modeshape.sequencer.ddl.StandardDdlParser

      `addProblem, addProblem, attachNewProblem, computeScore, consumeComment, consumeIdentifier, consumeParenBoundedTokens, doUseTerminator, equals, getCurrentMarkedPosition, getDatatypeParser, getDataTypeStartWords, getIdentifyingKeywords, getProblems, getRootNode, getStatementTypeName, getTableElementsString, getTerminator, handleUnknownToken, hashCode, integer, isColumnDefinitionStart, isComment, isMissingTerminatorNode, isTableConstraint, isTerminator, isTestMode, isValidSchemaChild, markEndOfStatement, markStartOfStatement, mergeNodes, missingTerminatorNode, nodeFactory, parse, parseCollateClause, parseColumnConstraint, parseColumnDefinition, parseColumnNameList, parseColumnsAndConstraints, parseConstraintAttributes, parseCreateAssertionStatement, parseCreateCharacterSetStatement, parseCreateCollationStatement, parseCreateDomainStatement, parseCreateTableOptions, parseCreateTranslationStatement, parseIgnorableStatement, parseIgnorableStatement, parseInsertStatement, parseName, parseNameList, parseNextStatement, parseReferences, parseRevokeStatement, parseSingleTerminatedColumnDefinition, parseStatement, parseTableConstraint, parseUntilCommaOrTerminator, parseUntilSemiColon, parseUntilTerminator, parseUntilTerminatorIgnoreEmbeddedStatements, postProcess, removeMissingTerminatorNodes, score, setAsSchemaChildNode, setDatatypeParser, setDoUseTerminator, setRootNode, setTerminator, setTestMode, testPrint, unknownTerminatedNode`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### ID

          public static final String ID

      The Postress parser identifier.
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### PostgresDdlParser

          public PostgresDdlParser()

  - ### Method Detail

    - #### getId

          public String getId()

      Description copied from class: `StandardDdlParser`
      Get the identifier for this parser.
      Specified by:
        `getId` in interface `DdlParser`
      Overrides:
        `getId` in class `StandardDdlParser`
      Returns:
        the parser's identifier; never null
      See Also:
        `DdlParser.getId()`

    - #### initializeTokenStream

          protected void initializeTokenStream(DdlTokenStream tokens)

      Description copied from class: `StandardDdlParser`
      Method called by `StandardDdlParser.score(String, String, DdlParserScorer)` and `StandardDdlParser.parse(String, AstNode, Object)` to initialize the `token stream`, giving subclasses a chance to `register key words` and `statement start phrases`.
      Overrides:
        `initializeTokenStream` in class `StandardDdlParser`
      Parameters:
        `tokens` - the stream of tokens

    - #### rewrite

          protected void rewrite(DdlTokenStream tokens,
                     AstNode rootNode)

      Overrides:
        `rewrite` in class `StandardDdlParser`

    - #### parseAlterStatement

          protected AstNode parseAlterStatement(DdlTokenStream tokens,
                                    AstNode parentNode)
                                         throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL ALTER statement based on SQL 92 specifications.
      Overrides:
        `parseAlterStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed ALTER `AstNode`
      Throws:
        `ParsingException`

    - #### parseAlterTableStatement

          protected AstNode parseAlterTableStatement(DdlTokenStream tokens,
                                         AstNode parentNode)
                                              throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL ALTER TABLE `AstNode` based on SQL 92 specifications.
      Overrides:
        `parseAlterTableStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed ALTER TABLE `AstNode`
      Throws:
        `ParsingException`

    - #### parseCreateSchemaStatement

          protected AstNode parseCreateSchemaStatement(DdlTokenStream tokens,
                                           AstNode parentNode)
                                                throws ParsingException

      Currently, only CREATE TABLE, CREATE VIEW, CREATE INDEX, CREATE SEQUENCE, CREATE TRIGGER and GRANT are accepted as clauses within CREATE SCHEMA. Parses DDL CREATE SCHEMA `AstNode` based on SQL 92 specifications. Initial implementation here does not parse the statement in detail.
      Overrides:
        `parseCreateSchemaStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed schema node
      Throws:
        `ParsingException`
      See Also:
        `StandardDdlParser.parseCreateSchemaStatement(org.modeshape.sequencer.ddl.DdlTokenStream, org.modeshape.sequencer.ddl.node.AstNode)`

    - #### parseCreateStatement

          protected AstNode parseCreateStatement(DdlTokenStream tokens,
                                     AstNode parentNode)
                                          throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL CREATE statement based on SQL 92 specifications.
      Overrides:
        `parseCreateStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed CREATE `AstNode`
      Throws:
        `ParsingException`

    - #### parseCreateTableStatement

          protected AstNode parseCreateTableStatement(DdlTokenStream tokens,
                                          AstNode parentNode)
                                               throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL CREATE TABLE `AstNode` based on SQL 92 specifications.
      Overrides:
        `parseCreateTableStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed CREATE TABLE `AstNode`
      Throws:
        `ParsingException`

    - #### parseNextCreateTableOption

          protected void parseNextCreateTableOption(DdlTokenStream tokens,
                                        AstNode parentNode)
                                             throws ParsingException

      Overrides:
        `parseNextCreateTableOption` in class `StandardDdlParser`
      Throws:
        `ParsingException`

    - #### areNextTokensCreateTableOptions

          protected boolean areNextTokensCreateTableOptions(DdlTokenStream tokens)
                                                     throws ParsingException

      Overrides:
        `areNextTokensCreateTableOptions` in class `StandardDdlParser`
      Throws:
        `ParsingException`

    - #### parseCreateViewStatement

          protected AstNode parseCreateViewStatement(DdlTokenStream tokens,
                                         AstNode parentNode)
                                              throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL CREATE VIEW `AstNode` basedregisterStatementStartPhrase on SQL 92 specifications. Initial implementation here does not parse the statement in detail.
      Overrides:
        `parseCreateViewStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the Create View node
      Throws:
        `ParsingException`

    - #### parseDefaultClause

          protected boolean parseDefaultClause(DdlTokenStream tokens,
                                   AstNode columnNode)

      Description copied from class: `StandardDdlParser`
      Parses the default clause for a column and sets appropriate properties on the column node.
      Overrides:
        `parseDefaultClause` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `columnNode` - the column node which may contain a default clause; may not be null
      Returns:
        true if default clause was found and parsed, otherwise false

    - #### parseCustomStatement

          protected AstNode parseCustomStatement(DdlTokenStream tokens,
                                     AstNode parentNode)
                                          throws ParsingException

      Description copied from class: `StandardDdlParser`
      Catch-all method to parse unknown (not registered or handled by sub-classes) statements.
      Overrides:
        `parseCustomStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the `AstNode`
      Throws:
        `ParsingException`

    - #### parseDropStatement

          protected AstNode parseDropStatement(DdlTokenStream tokens,
                                   AstNode parentNode)
                                        throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL DROP `AstNode` based on SQL 92 specifications.
      Overrides:
        `parseDropStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the parsed DROP `AstNode`
      Throws:
        `ParsingException`

    - #### parseGrantStatement

          protected AstNode parseGrantStatement(DdlTokenStream tokens,
                                    AstNode parentNode)
                                         throws ParsingException

      Parses DDL GRANT statement `AstNode` based on SQL 92 specifications.
      Overrides:
        `parseGrantStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the `AstNode`
      Throws:
        `ParsingException`
      See Also:
        `StandardDdlParser.parseGrantStatement(org.modeshape.sequencer.ddl.DdlTokenStream, org.modeshape.sequencer.ddl.node.AstNode)`

    - #### parseGrantPrivileges

          protected void parseGrantPrivileges(DdlTokenStream tokens,
                                  List<AstNode> privileges)
                                       throws ParsingException

      Overrides:
        `parseGrantPrivileges` in class `StandardDdlParser`
      Throws:
        `ParsingException`
      See Also:
        `StandardDdlParser.parseGrantPrivileges(org.modeshape.sequencer.ddl.DdlTokenStream, java.util.List)`

    - #### parseSetStatement

          protected AstNode parseSetStatement(DdlTokenStream tokens,
                                  AstNode parentNode)
                                       throws ParsingException

      Description copied from class: `StandardDdlParser`
      Parses DDL SET `AstNode` based on SQL 92 specifications.
      Overrides:
        `parseSetStatement` in class `StandardDdlParser`
      Parameters:
        `tokens` - the `DdlTokenStream` representing the tokenized DDL content; may not be null
        `parentNode` - the parent `AstNode` node; may not be null
      Returns:
        the `AstNode`
      Throws:
        `ParsingException`

    - #### parseColumns

          protected void parseColumns(DdlTokenStream tokens,
                          AstNode tableNode,
                          boolean isAlterTable)
                               throws ParsingException

      Utility method designed to parse columns within an ALTER TABLE ADD statement.
      Parameters:
        `tokens` - the tokenized `DdlTokenStream` of the DDL input content; may not be null
        `tableNode` - the parent `AstNode` node; may not be null
        `isAlterTable` -
      Throws:
        `ParsingException`

    - #### getValidSchemaChildTypes

          protected String[] getValidSchemaChildTypes()

      Overrides:
        `getValidSchemaChildTypes` in class `StandardDdlParser`
      See Also:
        `StandardDdlParser.getValidSchemaChildTypes()`

    - #### getCustomDataTypeStartWords

          protected List<String> getCustomDataTypeStartWords()

      Returns a list of custom data type start words which can be used to help identify a column definition sub-statement. Sub-classes should override this method to contribute DB-specific data types.
      Overrides:
        `getCustomDataTypeStartWords` in class `StandardDdlParser`
      Returns:
        list of data type start words
      See Also:
        `StandardDdlParser.getDataTypeStartWords()`

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