thinkphp使用pgsql，提示table_msg函数缺失的解决方法

Posted 2023-05-06 耀阳居士

thinkphp使用pgsql，提示table_msg函数缺失的解决方法

 

打开navicate，打开查询，执行下面代码就可以解决：

CREATE OR REPLACE FUNCTION pgsql_type(a_type varchar) RETURNS varchar AS
$BODY$
DECLARE
     v_type varchar;
BEGIN
     IF a_type=\'int8\' THEN
          v_type:=\'bigint\';
     ELSIF a_type=\'int4\' THEN
          v_type:=\'integer\';
     ELSIF a_type=\'int2\' THEN
          v_type:=\'smallint\';
     ELSIF a_type=\'bpchar\' THEN
          v_type:=\'char\';
     ELSE
          v_type:=a_type;
     END IF;
     RETURN v_type;
END;
$BODY$
LANGUAGE PLPGSQL;
 
CREATE TYPE "public"."tablestruct" AS (
  "fields_key_name" varchar(100),
  "fields_name" VARCHAR(200),
  "fields_type" VARCHAR(20),
  "fields_length" BIGINT,
  "fields_not_null" VARCHAR(10),
  "fields_default" VARCHAR(500),
  "fields_comment" VARCHAR(1000)
);
 
CREATE OR REPLACE FUNCTION "public"."table_msg" (a_schema_name varchar, a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
$body$
DECLARE
     v_ret tablestruct;
     v_oid oid;
     v_sql varchar;
     v_rec RECORD;
     v_key varchar;
BEGIN
     SELECT
           pg_class.oid  INTO v_oid
     FROM
           pg_class
           INNER JOIN pg_namespace ON (pg_class.relnamespace = pg_namespace.oid AND lower(pg_namespace.nspname) = a_schema_name)
     WHERE
           pg_class.relname=a_table_name;
     IF NOT FOUND THEN
         RETURN;
     END IF;
 
     v_sql=\'
     SELECT
           pg_attribute.attname AS fields_name,
           pg_attribute.attnum AS fields_index,
           pgsql_type(pg_type.typname::varchar) AS fields_type,
           pg_attribute.atttypmod-4 as fields_length,
           CASE WHEN pg_attribute.attnotnull  THEN \'\'not null\'\'
           ELSE \'\'\'\'
           END AS fields_not_null,
           pg_attrdef.adsrc AS fields_default,
           pg_description.description AS fields_comment
     FROM
           pg_attribute
           INNER JOIN pg_class  ON pg_attribute.attrelid = pg_class.oid
           INNER JOIN pg_type   ON pg_attribute.atttypid = pg_type.oid
           LEFT OUTER JOIN pg_attrdef ON pg_attrdef.adrelid = pg_class.oid AND pg_attrdef.adnum = pg_attribute.attnum
           LEFT OUTER JOIN pg_description ON pg_description.objoid = pg_class.oid AND pg_description.objsubid = pg_attribute.attnum
     WHERE
           pg_attribute.attnum > 0
           AND attisdropped <> \'\'t\'\'
           AND pg_class.oid = \' || v_oid || \'
     ORDER BY pg_attribute.attnum\' ;
     FOR v_rec IN EXECUTE v_sql LOOP
         v_ret.fields_name=v_rec.fields_name;
         v_ret.fields_type=v_rec.fields_type;
         IF v_rec.fields_length > 0 THEN
            v_ret.fields_length:=v_rec.fields_length;
         ELSE
            v_ret.fields_length:=NULL;
         END IF;
         v_ret.fields_not_null=v_rec.fields_not_null;
         v_ret.fields_default=v_rec.fields_default;
         v_ret.fields_comment=v_rec.fields_comment;
         SELECT constraint_name INTO v_key FROM information_schema.key_column_usage WHERE table_schema=a_schema_name AND table_name=a_table_name AND column_name=v_rec.fields_name;
         IF FOUND THEN
            v_ret.fields_key_name=v_key;
         ELSE
            v_ret.fields_key_name=\'\';
         END IF;
         RETURN NEXT v_ret;
     END LOOP;
     RETURN ;
END;
$body$
LANGUAGE \'plpgsql\' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;
COMMENT ON FUNCTION "public"."table_msg"(a_schema_name varchar, a_table_name varchar)
IS \'获得表信息\';
---重载一个函数
CREATE OR REPLACE FUNCTION "public"."table_msg" (a_table_name varchar) RETURNS SETOF "public"."tablestruct" AS
$body$
DECLARE
    v_ret tablestruct;
BEGIN
    FOR v_ret IN SELECT * FROM table_msg(\'public\',a_table_name) LOOP
        RETURN NEXT v_ret;
    END LOOP;
    RETURN;
END;
$body$
LANGUAGE \'plpgsql\' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;
COMMENT ON FUNCTION "public"."table_msg"(a_table_name varchar)
IS \'获得表信息\';

 

pgsql数据库数据量怎么查

1.win+r打开运行窗口输入cmd打开命令行提示符，在命令行提示符里面使用postgresql的账号进行登录，然后使用use随便选择一个数据库进去。
2.切换到了指定的数据库之后就可以去对这个数据里面的数据表进行操作了，那么统计一个数据表的数据总数的语法如下所示：
SELECT COUNT(*) FROM table
其中count函数是统计总数的关键，而*号则表示统计的所有行的数据。用*这个符号而不是字段名或者是其他的参数是因为，使用*号可以把所有的数据行数都统计起来，包括空值和NULL值。如果使用字段的话，遇到空值就会跳过不算在总数里面了。
3.在命令行里面输入这一行命令回车执行后就会在下一行输出这个表的数据总行数了，想要去查询其他表总数也只要把表名更改一下就好了。 参考技术A "可以使用pgAdminIl,连接到数据库

服务之后，展开数据库，就可以看到

模式，再展开模式，就可以看到此模

式下的数据数据表，函数等对象了。"