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thinkphp 连接 pgsql postgresql 报错 table_msg

原文地址
http://www.thinkphp.cn/topic/42766.html

  1. 注意端口 数据库等

  2. pgsql中没有table_msg这个函数需要自己到库中定义，如下所示
    pgsql postgresql中没有 这个

    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';

最后更新于 2018-09-18 14:18:32 并被添加「thinkphp 连接 pgsql postgresql 报错 table_msg」标签，已有 659 位童鞋阅读过。

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