62 lines
2.3 KiB
Python
62 lines
2.3 KiB
Python
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import pymysql, sys
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TARGETS = [
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("charge_records", "energy"),
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("charge_records", "start_time"),
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("charge_records", "end_time"),
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("energy_stats", "total_energy"),
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("download_tasks", "completed_at"),
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("organizations", "parent_id"),
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]
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SQL = """
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SELECT TABLE_NAME, COLUMN_NAME, COLUMN_TYPE, DATA_TYPE, IS_NULLABLE,
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COLUMN_DEFAULT, EXTRA, COLUMN_COMMENT
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = %s AND ((TABLE_NAME, COLUMN_NAME) IN (%s))
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ORDER BY TABLE_NAME, COLUMN_NAME
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"""
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IDX = """
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SELECT TABLE_NAME, INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) cols, NON_UNIQUE
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FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA=%s AND TABLE_NAME IN ('organizations','download_tasks','energy_stats','charge_records','charge_orders')
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GROUP BY TABLE_NAME, INDEX_NAME, NON_UNIQUE ORDER BY TABLE_NAME, INDEX_NAME
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"""
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FK = """
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SELECT TABLE_NAME, CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME
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FROM information_schema.KEY_COLUMN_USAGE
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WHERE TABLE_SCHEMA=%s AND REFERENCED_TABLE_NAME IS NOT NULL
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ORDER BY TABLE_NAME, CONSTRAINT_NAME
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"""
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for db in ("pms_dev", "pms"):
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conn = pymysql.connect(host="10.8.0.252", user="root", password="Hbhyg731024@", database=db, charset="utf8mb4")
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cur = conn.cursor()
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print("=" * 78)
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print("DB:", db)
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print("=" * 78)
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placeholders = ",".join(["(%s,%s)"] * len(TARGETS))
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flat = [db] + [x for t in TARGETS for x in t]
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cur.execute(SQL % ("%s", placeholders), flat)
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for r in cur.fetchall():
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print(f" {r[0]}.{r[1]:<14} type={r[2]:<18} data={r[3]:<10} null={r[4]:<4} default={str(r[5]):<20} extra={r[6]:<20} comment={r[7]}")
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print(" -- 索引 --")
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cur.execute(IDX, (db,))
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for r in cur.fetchall():
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print(f" {r[0]:<18} {r[1]:<38} ({r[2]}) uniq={0 if r[3]==0 else 1}")
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print(" -- 外键 --")
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cur.execute(FK, (db,))
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for r in cur.fetchall():
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print(f" {r[0]:<18} {r[1]:<40} {r[2]} -> {r[3]}.{r[4]}")
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# row counts
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print(" -- 行数 --")
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for t in ("charge_records", "energy_stats", "download_tasks", "organizations", "charge_orders"):
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try:
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cur.execute(f"SELECT COUNT(*) FROM {t}")
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print(f" {t:<18} {cur.fetchone()[0]}")
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except Exception as e:
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print(f" {t:<18} ERR {e}")
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conn.close()
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