org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psqllow

类 PostgresLowDialect

java.lang.Object

org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psql.PostgresDialect

org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psqllow.PostgresLowDialect

所有已实现的接口:

Serializable, JdbcDialect

public class PostgresLowDialect
extends PostgresDialect

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psql.PostgresDialect

DEFAULT_POSTGRES_FETCH_SIZE, fieldIde

从接口继承的字段 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect

log

构造器概要

构造器

构造器和说明
PostgresLowDialect(String fieldIde)

方法概要

限定符和类型	方法和说明
Optional<String>	getUpsertStatement(String database, String tableName, String[] fieldNames, String[] uniqueKeyFields) Constructs the dialects upsert statement if supported; such as MySQL's DUPLICATE KEY UPDATE, or PostgreSQL's {@code ON CONFLICT...

从类继承的方法 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psql.PostgresDialect

approximateRowCntStatement, creatPreparedStatement, dialectName, getJdbcDialectTypeMapper, getRowConverter, hashModForField, parse, quoteDatabaseIdentifier, quoteIdentifier, tableIdentifier

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect

connectionUrlParse, defaultParameter, extractTableName, getDeleteStatement, getFieldIde, getInsertIntoStatement, getJdbcConnectionProvider, getResultSetMetaData, getRowExistsStatement, getUpdateStatement, queryNextChunkMax, sampleDataFromColumn, tableIdentifier

构造器详细资料

PostgresLowDialect

public PostgresLowDialect(String fieldIde)

方法详细资料

getUpsertStatement

public Optional<String> getUpsertStatement(String database,
                                           String tableName,
                                           String[] fieldNames,
                                           String[] uniqueKeyFields)

从接口复制的说明: JdbcDialect

Constructs the dialects upsert statement if supported; such as MySQL's DUPLICATE KEY UPDATE, or PostgreSQL's ON CONFLICT... DO UPDATE SET...

If supported, the returned string will be used as a PreparedStatement. Fields in the statement must be in the same order as the fieldNames parameter.

If the dialect does not support native upsert statements, the writer will fallback to SELECT ROW Exists + UPDATE/INSERT which may have poor performance.

指定者:

getUpsertStatement 在接口中 JdbcDialect

覆盖:

getUpsertStatement 在类中 PostgresDialect

返回:

the dialects UPSERT statement or Optional.empty().