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https://gitee.com/dromara/mayfly-go
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71 lines
3.6 KiB
SQL
71 lines
3.6 KiB
SQL
--PGSQL_DB_SCHEMAS 库schemas
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select
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n.nspname as "schemaName"
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from
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pg_namespace n
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where
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has_schema_privilege(n.nspname, 'USAGE')
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and n.nspname not like 'pg_%'
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and n.nspname not like 'dbms_%'
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and n.nspname not like 'utl_%'
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and n.nspname != 'information_schema'
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order by
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n.nspname
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---------------------------------------
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--PGSQL_TABLE_INFO 表详细信息
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select
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c.relname as "tableName",
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obj_description (c.oid) as "tableComment",
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pg_table_size ('"' || n.nspname || '"."' || c.relname || '"') as "dataLength",
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pg_indexes_size ('"' || n.nspname || '"."' || c.relname || '"') as "indexLength",
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psut.n_live_tup as "tableRows"
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from
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pg_class c
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join pg_namespace n on
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c.relnamespace = n.oid
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join pg_stat_user_tables psut on
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psut.relid = c.oid
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where
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has_table_privilege(CAST(c.oid AS regclass), 'SELECT')
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and n.nspname = current_schema()
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and c.reltype > 0
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{{if .tableNames}}
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and c.relname in ({{.tableNames}})
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{{end}}
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order by c.relname
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---------------------------------------
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--PGSQL_INDEX_INFO 表索引信息
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SELECT a.indexname AS "indexName",
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'BTREE' AS "IndexType",
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case when a.indexdef like 'CREATE UNIQUE INDEX%%' then 1 else 0 end as "isUnique",
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obj_description(b.oid, 'pg_class') AS "indexComment",
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indexdef AS "indexDef",
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c.attname AS "columnName",
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c.attnum AS "seqInIndex",
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case when a.indexname like '%%_pkey' then 1 else 0 end AS "isPrimaryKey"
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FROM pg_indexes a
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join pg_class b on a.indexname = b.relname
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join pg_attribute c on b.oid = c.attrelid
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WHERE a.schemaname = (select current_schema())
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AND a.tablename = '%s'
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AND a.indexname not like '%%_pkey'
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---------------------------------------
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--PGSQL_COLUMN_MA 表列信息
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SELECT a.table_name AS "tableName",
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a.column_name AS "columnName",
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a.is_nullable AS "nullable",
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a.udt_name AS "dataType",
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a.character_maximum_length AS "charMaxLength",
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a.numeric_precision AS "numPrecision",
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case when a.column_default like 'nextval%%' then null else a.column_default end AS "columnDefault",
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a.numeric_scale AS "numScale",
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case when a.column_default like 'nextval%%' then 1 else 0 end AS "isIdentity",
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case when b.column_name is not null then 1 else 0 end AS "isPrimaryKey",
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col_description((a.table_schema || '.' || a.table_name) ::regclass, a.ordinal_position) AS "columnComment"
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FROM information_schema.columns a
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left join information_schema.key_column_usage b
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on a.table_schema = b.table_schema and b.table_name = a.table_name and b.column_name = a.column_name
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WHERE a.table_schema = (select current_schema())
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and a.table_name in (%s)
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order by a.table_name, a.ordinal_position
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