# 常量字段值

## 目录

- com.taosdata.*

## com.taosdata.*

com.taosdata.jdbc.TSDBConstants
`public static final String` `DEFAULT_PORT` `"6200"`
`public static final String` `INVALID_VARIABLES` `"invalid variables"`
`public static final int` `JNI_CONNECTION_NULL` `-2`
`public static final int` `JNI_FETCH_END` `-6`
`public static final long` `JNI_NULL_POINTER` `0L`
`public static final int` `JNI_NUM_OF_FIELDS_0` `-4`
`public static final int` `JNI_RESULT_SET_NULL` `-3`
`public static final int` `JNI_SQL_NULL` `-5`
`public static final int` `JNI_SUCCESS` `0`
`public static final int` `JNI_TDENGINE_ERROR` `-1`
`public static final int` `maxFieldSize` `16384`
`public static final int` `TSDB_DATA_TYPE_BIGINT` `5`
`public static final int` `TSDB_DATA_TYPE_BINARY` `8`
`public static final int` `TSDB_DATA_TYPE_BOOL` `1`
`public static final int` `TSDB_DATA_TYPE_DOUBLE` `7`
`public static final int` `TSDB_DATA_TYPE_FLOAT` `6`
`public static final int` `TSDB_DATA_TYPE_INT` `4`
`public static final int` `TSDB_DATA_TYPE_NCHAR` `10`
`public static final int` `TSDB_DATA_TYPE_NULL` `0`
`public static final int` `TSDB_DATA_TYPE_SMALLINT` `3`
`public static final int` `TSDB_DATA_TYPE_TIMESTAMP` `9`
`public static final int` `TSDB_DATA_TYPE_TINYINT` `2`
`public static final String` `UNSUPPORT_METHOD_EXCEPTIONZ_MSG` `"this operation is NOT supported currently!"`

com.taosdata.jdbc.TSDBDriver
`public static final String` `PROPERTY_KEY_BATCH_LOAD` `"batchfetch"`
`public static final String` `PROPERTY_KEY_CHARSET` `"charset"`
`public static final String` `PROPERTY_KEY_CONFIG_DIR` `"cfgdir"`
`public static final String` `PROPERTY_KEY_DBNAME` `"dbname"`
`public static final String` `PROPERTY_KEY_HOST` `"host"`
`public static final String` `PROPERTY_KEY_LOCALE` `"locale"`
`public static final String` `PROPERTY_KEY_PASSWORD` `"password"`
`public static final String` `PROPERTY_KEY_PORT` `"port"`
`public static final String` `PROPERTY_KEY_TIME_ZONE` `"timezone"`
`public static final String` `PROPERTY_KEY_USER` `"user"`