问运行迁移时出错: sqlalchemy.exc.CompileError: Postgresql ENUM类型需要名称ENENUM类型 ENUM类型也叫作枚举类型，ENUM类型的取值范围需要在定义字段时进行指定。设置字段值时，ENUM类型只允许从成员中选取单个值，不能一次选取多个值。 其所需要的存储空间由定义ENUM类型时指定的成员个数决定。 文本字符串类型长度...
The PostgreSQL error “type enum does not exist” occurs when the specified enum type is not properly defined or recognized in the database schema. Today, we will look at the causes, impacts, and solutions for resolving this error. This error typically appears as: org.postgresql.util.PSQLExcep...
{ "unsafe_new_enum_value_usage", ERRCODE_UNSAFE_NEW_ENUM_VALUE_USAGE }, { "operator_intervention", ERRCODE_OPERATOR_INTERVENTION }, { "query_canceled", ERRCODE_QUERY_CANCELED }, { "admin_shutdown", ERRCODE_ADMIN_SHUTDOWN }, { "crash_shutdown", ERRCODE_CRASH_SHUTDOWN }, { "cannot_...
CREATETYPE moodASENUM ('sad','ok','happy'); 使用 CREATETYPE moodASENUM ('sad','ok','happy'); CREATETABLEperson ( name text, current_mood mood ); INSERTINTOpersonVALUES('Moe','happy'); SELECT*FROMpersonWHEREcurrent_mood='happy'; name|current_mood ---+--- Moe|happy (1row) 排序...
Compiling source code on Macs requires first installing eitherXcodeor the “Command Line Tools” (which is a much smaller download). To check if either is installed, run thexcode-select -pcommand. If you see an error message, then neither is installed and you can then runxcode-select --in...
pg_stat_statements.track(enum) pg_stat_statements.track控制统计数据规则,两个值top和all,top用于追踪top-level statement(直接由客户端方发送的,all还会追踪嵌套的statements(例如在函数中调用的statements,本例使用的是all) pg_stat_statements.track_utility(boolen) ...
Name String 参数名示例值:wal_level ParamValueType String 参数值类型:integer(整型)、real(浮点型)、bool(布尔型)、enum(枚举类型)、mutil_enum(枚举类型、支持多选)。当参数类型为integer(整型)、real(浮点型)时,参数的取值范围根据返回值的Max、Min确定; 当参数类型为bool(布尔型)时,参数设置值取值范围是tru...
port =1921# (change requires restart)max_connections =300# (change requires restart)unix_socket_directories ='.'# comma-separated list of directoriesshared_buffers =32GB# min 128kBhuge_pages =try# on, off, or trymaintenance_work_mem =2GB# min 1MBdynamic_shared_memory_type = posix# the def...
NodeTag type; RangeVar *relation;/* table name to process, or NULL */Oid oid;/* table's OID; InvalidOid if not looked up */List *va_cols;/* list of column names, or NIL for all */} VacuumRelation; AI代码助手复制代码 BufferAccessStrategy ...
*name;/* context name (just for debugging) */constchar*ident;/* context ID if any (just for debugging) */MemoryContextCallback *reset_cbs;/* list of reset/delete callbacks */} MemoryContextData;/* utils/palloc.h contains typedef struct MemoryContextData *MemoryContext *//* * Type ...